☆ 4.8 Review

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

CHEMICAL SOCIETY REVIEWS (2022)

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Article Materials Science, Multidisciplinary

Understanding Dual-Polar Group Functionalized COFs for Accelerating Li-Ion Transport and Dendrite-Free Deposition in Lithium Metal Anodes

Qi An et al.

Summary: In this study, a lithium-phobic carbonyl and carboxy dual-group-modified covalent organic framework (COF-COOH) was designed to coat the polypropylene separator, achieving the regulation of ion transport and uniform lithium deposition. The modified lithium battery demonstrated stable cycling for over 1000 hours and lower voltage hysteresis, showing great promise for practical application of lithium metal anodes.

ENERGY & ENVIRONMENTAL MATERIALS (2023)

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Article Chemistry, Physical

Visible light triggered exfoliation of COF micro/nanomotors for efficient photocatalysis

Kai Feng et al.

Summary: We developed a light-induced strategy to disperse aggregated bulk covalent organic frameworks (COFs) into isolated COF nanoparticles. Metal-coordinated COFs, specifically COF-909-Cu, -Co, or -Fe, were used to design COF-based micro/nanomotors. Metal ions decorated in the COF-909 backbone promoted electron-hole separation and triggered the production of ionic and reactive oxygen species under visible light irradiation, resulting in efficient dispersion of COFs. Among them, COF-909-Fe showed the best dispersion performance and significantly reduced particle size, leading to enhanced photocatalytic degradation efficiency for tetracycline.

GREEN ENERGY & ENVIRONMENT (2023)

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Article Nanoscience & Nanotechnology

Metal Nanoparticles@Covalent Organic Framework@Enzymes: A Universal Platform for Fabricating a Metal-Enzyme Integrated Nanocatalyst

Hao Zhao et al.

Summary: Cascade catalysis that combines chemical catalysis and biocatalysis, especially the integration of metal nanoparticles (MNPs) with enzymes, has attracted extensive attention. This study proposed a strategy to space-separately immobilize MNPs and enzymes to a highly stable covalent organic framework (COF). The obtained integrated nanocatalyst showed high catalytic efficiency and reusability in the degradation of organophosphate nerve agents. The versatility of the preparation strategy of COF-based integrated nanocatalyst has also been expanded.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

Metallated Isoindigo-Porphyrin Covalent Organic Framework Photocatalyst with a Narrow Band Gap for Efficient CO2 Conversion

Tina Skorjanc et al.

Summary: The new COF material Co-PI-COF shows efficient photocatalytic performance in reducing CO2 into formate, with a low band gap and efficient charge transfer, paving the way for the development of new and efficient photocatalysts.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

Screening of Transition-Metal Single-Atom Catalysts Anchored on Covalent-Organic Frameworks for Efficient Nitrogen Fixation

Juan Wang et al.

Summary: This study investigates the use of transition-metal atoms anchored to two-dimensional covalent-organic frameworks for single-atom catalysis in ammonia synthesis. Through a screening process, WPc-TFPN is identified as the best SAC for nitrogen reduction reaction with a low limiting potential of -0.19 V, and multiple-level descriptors are developed to uncover the origins of NRR activity.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

The Fabrication of Pd Single Atoms/Clusters on COF Layers as Co-catalysts for Photocatalytic H2 Evolution

Xiaomin Ren et al.

Summary: The optimization of the particle size of co-catalysts is crucial for enhancing the photocatalytic activity of semiconductors.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

Covalent Organic Framework-Incorporated Nanofibrous Membrane as an Intelligent Platform for Wound Dressing

Yucheng Zou et al.

Summary: Covalent organic frameworks (COFs) have emerged as promising drug carriers in biomedical applications, but their potential in wound healing has not been extensively studied. In this study, a curcumin-loaded COF was prepared and incorporated into polycaprolactone nanofibrous membranes to develop a pH-triggered drug release platform for wound dressing. The CUR@COF-based membranes exhibited excellent properties and promoted wound healing and skin regeneration by reducing inflammation and enhancing angiogenesis.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

Single-Crystalline Covalent Organic Frameworks as High-Performance Liquid Chromatographic Stationary Phases for Positional Isomer Separation

Qiong Zheng et al.

Summary: A single-crystalline covalent organic framework (COF-300) packed column was developed for the successful separation of positional isomers in high-performance liquid chromatography (HPLC), demonstrating the great potential of single-crystalline COFs in separation science.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Chemistry, Multidisciplinary

30 Li+-Accommodating Covalent Organic Frameworks as Ultralong Cyclable High-Capacity Li-Ion Battery Electrodes

Lipeng Zhai et al.

Summary: In this study, a redox-active COF (TP-OH-COF) capable of accommodating 30 Li+ ions was synthesized for use as a high-capacity lithium-ion battery electrode material. With a unique chemical/structural feature, the TP-OH-COF demonstrated a high specific capacity of 764.1 mAh g(-1) and 63% capacity retention after 8000 cycles at a fast current density of 5.0 A g(-1).

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

CO2 Dominated Bifunctional Catalytic Sites for Efficient Industrial Exhaust Conversion

Man Dong et al.

Summary: Photoreduction of exhaust gas from power plant by Ni@TPHH-COF showed appealing yield and selectivity, achieving AQY of 3.96% under 10% CO2 concentration, ranking among the highest reported photocatalysts. The mechanism suggests CO2 plays a dual function, selectively enriching catalytic sites and improving reaction rate.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Microenvironments Enabled by Covalent Organic Framework Linkages for Modulating Active Metal Species in Photocatalytic CO2 Reduction

Shuailong Yang et al.

Summary: In this study, a nickel-modified COF was reported to enhance the photocatalytic reduction of CO2 by modifying the linkage microenvironment.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Engineering Multienzyme-Mimicking Covalent Organic Frameworks as Pyroptosis Inducers for Boosting Antitumor Immunity

Liang Zhang et al.

Summary: A series of multienzyme-mimicking covalent organic frameworks (COFs) have been engineered to induce pyroptosis and remodel the tumor microenvironment, boosting cancer immunotherapy.

ADVANCED MATERIALS (2022)

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Review Chemistry, Multidisciplinary

2D Covalent Organic Frameworks: From Synthetic Strategies to Advanced Optical-Electrical-Magnetic Functionalities

Congyong Wang et al.

Summary: This review summarizes recent research advances in 2D COFs, focusing on the preparation of 2D COF powders, single crystals, and thin films, as well as their advanced optical, electrical, and magnetic functionalities. Challenging issues and potential research outlook for 2D COFs in terms of structure, synthesis, and functionalities are also discussed.

ADVANCED MATERIALS (2022)

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Article Chemistry, Analytical

Conductive Covalent Organic Frameworks with Conductivity- and Pre-Reduction-Enhanced Electrochemiluminescence for Ultrasensitive Biosensor Construction

Jin-Ling Zhang et al.

Summary: The study focuses on improving the electrochemiluminescence (ECL) performance of covalent organic frameworks (COFs) by enhancing conductivity and pre-reduction, and applying them to ultrasensitive biosensor detection systems.

ANALYTICAL CHEMISTRY (2022)

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Article Chemistry, Analytical

MoS2-Covalent Organic Framework Composite as a Bifunctional Supporter for the Determination of Trace Nickel by Photochemical Vapor Generation-Microplasma Optical Emission Spectrometry

Ji-Ying Cai et al.

Summary: A MoS2-covalent organic framework (COF) composite is used as a bifunctional supporter for efficient sample separation/enrichment and photochemical vapor generation (PVG) enhancement. The system shows highly selective and sensitive detection of heavy metals in environmental water. This method has great practical value for complex sample analysis.

ANALYTICAL CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Engineering Olefin-Linked Covalent Organic Frameworks for Photoenzymatic Reduction of CO2

Zhengfeng Zhao et al.

Summary: This study developed a new artificial photoenzymatic system using a mesoporous olefin-linked covalent organic framework as the carrier for immobilizing formate dehydrogenase and Rh-based electron mediator, achieving high efficiency in converting CO2 to formic acid.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

MOF Synthesis Prediction Enabled by Automatic Data Mining and Machine Learning

Yi Luo et al.

Summary: This study demonstrates the potential of machine learning in predicting the synthesis parameters of metal-organic frameworks (MOFs). By establishing a MOF synthesis database and training machine learning models, the researchers achieved good prediction performance in synthesizing new MOF structures, surpassing human expert predictions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

An Expanded 2D Fused Aromatic Network with 90-Ring Hexagons

Alberto Riano et al.

Summary: This paper describes the synthesis, characterization, and properties of an expanded 2D FAN with 90-ring hexagons, exceeding the largest 2D FAN lattices reported to date.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Covalent Organic Framework with Highly Accessible Carbonyls and π-Cation Effect for Advanced Potassium-Ion Batteries

Xiao-Xi Luo et al.

Summary: This study reports an exfoliated polyimide COF composite prepared on single-walled carbon nanotubes as an advanced anode for potassium-ion batteries, demonstrating efficient ion diffusion and extended stability.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Maximizing Electroactive Sites in a Three-Dimensional Covalent Organic Framework for Significantly Improved Carbon Dioxide Reduction Electrocatalysis

Bin Han et al.

Summary: Functional 3D COFs with irreversible bond were synthesized successfully, showing a large current density and high Faradaic efficiency, significantly improved compared to excellent 2D COF analogues.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Machine-Learning Prediction of Metal-Organic Framework Guest Accessibility from Linker and Metal Chemistry

Remi Petuya et al.

Summary: The structure and guest accessibility of a MOF are determined by the choice of metal and linker. By analyzing experimental three-dimensional MOF structures and studying the chemical properties of the components, we can predict the guest accessibility of a MOF and provide guidance in component selection for exploratory MOF synthesis based on guest accessibility considerations.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Molecularly Engineered Covalent Organic Frameworks for Hydrogen Peroxide Photosynthesis

Mingpu Kou et al.

Summary: Synthesizing H2O2 through photocatalytic approach using a bipyridine-based covalent organic framework (COF-TfpBpy) shows high efficiency in small-scale production. The resulting H2O2 solution can degrade pollutants, and the photocatalytic activity is enhanced by the protonation of the bipyridine monomer. This work demonstrates the feasibility of COF-catalyzed photosynthesis of H2O2 from water and air, and provides a foundation for wastewater treatment using photocatalytic H2O2 solution.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Three-Dimensional Crystalline Covalent Triazine Frameworks via a Polycondensation Approach

Ruixue Sun et al.

Summary: This research reports the design and synthesis of two 3D crystalline CTFs with moderate crystallinity, relatively large surface area, and high CO2 uptake capacity. These 3D CTFs exhibit ultrastability and provide a synthetic strategy and structural basis for expanding practical applications of CTF materials.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Porphyrin-Based COF 2D Materials: Variable Modification of Sensing Performances by Post-Metallization

Ya-Qian Lan et al.

Summary: Researchers have successfully prepared a series of highly sensitive and specific COF 2D nanomaterials for room-temperature NO2 sensing. By designing H-2-TPCOF with modifiable sites on its surfaces and post-metallization, remarkable improvements in sensing performance were achieved. Among them, Co-TPCOF exhibited the highest sensitivity and ultra-low limit-of-detection, with fast response and recovery.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Two-Dimensional Fluorinated Covalent Organic Frameworks with Tunable Hydrophobicity for Ultrafast Oil-Water Separation

Yuhao Liu et al.

Summary: The study presents a novel design and synthesis of two-dimensional robust COFs with controllable hydrophobicity and processability, allowing direct growth of COF layers on support surfaces. These COFs demonstrate excellent tolerance to water, acid, and base, with a superhydrophobic COF@SSN coating showing high water-resistance and self-cleaning properties.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Imparting CO2 Electroreduction Auxiliary for Integrated Morphology Tuning and Performance Boosting in a Porphyrin-based Covalent Organic Framework

Yi-Rong Wang et al.

Summary: This study has successfully prepared COF nanosheets with superior performance using a functionalizing exfoliation agent, providing a new possibility for the development of efficient CO2 electroreduction catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

A Nanographene-Based Two-Dimensional Covalent Organic Framework as a Stable and Efficient Photocatalyst

Enquan Jin et al.

Summary: Synthesis of covalent organic frameworks with desirable organic units leads to advanced materials with unique functionalities, with sp(2)-carbon-conjugated COFs providing a platform to build highly stable and crystalline porous polymers. A 2D olefin-linked COF using nanographene, dibenzo[hi,st]ovalene (DBOV), as a building block was prepared, showing ABC-stacked lattices, enhanced stability, and high charge-carrier mobility.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Review Chemistry, Physical

Quantitative Surface-Enhanced Spectroscopy

Ryan D. Norton et al.

Summary: This review discusses the recent advances in quantitative SERS detection, focusing on intermolecular interactions, surface selection rules, and target molecule solubility and accessibility. The impacts of surface selection rules and enhancement mechanisms on the activation and deactivation of normal Raman modes in SERS are explored. The review also summarizes the experimental conditions that can be used to tune the molecular affinity to and density near SERS substrates.

ANNUAL REVIEW OF PHYSICAL CHEMISTRY (2022)

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Article Chemistry, Applied

Palladium anchored on a covalent organic framework as a heterogeneous catalyst for phosphorylation of aryl bromides

Yu-Xuan Chen et al.

Summary: A simple azine-linked COF with high thermal and chemical stabilities was prepared using a deep eutectic solvent (DES) as a green media. The synthesized COF was employed as a heterogeneous ligand for immobilization of Pd-II. The obtained Pd-supported COF nanoparticles catalyst showed excellent recyclability, reusability, and retention of crystallinity in the Hirao reaction of aryl halides and dialkyl phosphites or diphenylphosphine oxide.

APPLIED ORGANOMETALLIC CHEMISTRY (2022)

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Article Biophysics

Porous Fe3O4@COF-Immobilized gold nanoparticles with excellent catalytic performance for sensitive electrochemical detection of ATP

Hao Li et al.

Summary: This study developed a signal-off electrochemical biosensor using Fe3O4@COF-Au NPs as a nanocarrier for sensitive detection of ATP. The Fe3O4@COF-Au NPs effectively confined Au NPs in uniform channels, providing a stable micro-environment for enhanced electro-catalytic performance. This approach not only enables sensitive ATP detection but also offers a versatile strategy for monitoring other biomolecules.

BIOSENSORS & BIOELECTRONICS (2022)

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Article Chemistry, Physical

Construction of Azobenzene Covalent Organic Frameworks as High-Performance Heterogeneous Photocatalyst

Tong Qin et al.

Summary: In this study, COF Tp-Azo and Cu-Tp-Azo were synthesized and their photocatalytic performances in the degradation of tetracycline were investigated. The results showed that Cu-Tp-Azo exhibited better degradation efficiency compared to Tp-Azo, indicating that the modification of copper ions can improve the photocatalytic activity of COFs.

CATALYSIS LETTERS (2022)

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Article Chemistry, Physical

Platinum Nanoparticles Uniformly Dispersed on Covalent Organic Framework Supports for Selective Synthesis of Secondary Amines

Nan Wang et al.

Summary: In this study, researchers successfully fabricated COF with pore structures and served as a host for growing dispersed platinum nanoparticles. The obtained Pt/COF hybrid exhibited high catalytic activity in the reductive amination reaction and showed good recyclability. The preferential selectivity towards secondary amines can be attributed to the synergistic effects between active platinum nanoparticles and COF.

CHEMCATCHEM (2022)

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Article Chemistry, Physical

Hollow Covalent Organic Framework Cages with Zn Ion-Implantation Promoting Photocatalytic H2 Evolution

Guoyu Liu et al.

Summary: This study reports a strategy to tune the electronic structure of COFs by implanting Zn ions, which significantly improves the separation and utilization of photoinduced charges.

CHEMCATCHEM (2022)

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Article Chemistry, Multidisciplinary

A record ammonia adsorption by calcium chloride confined in covalent organic frameworks

Xiaoxin Tian et al.

Summary: Efficient NH3 capture materials have been designed and synthesized by confining calcium chloride in a porous covalent organic framework, demonstrating high capture capacity and easy desorption, especially for low NH3 content absorption. The excellent performance is attributed to the highly dispersion of CaCl2 in the pores of the COF and coordinating interactions between NH3 and Ca2+ along with hydrogen bond interactions between NH3 and Cl-.

CHEMICAL COMMUNICATIONS (2022)

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Article Chemistry, Multidisciplinary

A CuS- and BODIPY-loaded nanoscale covalent organic framework for synergetic photodynamic and photothermal therapy

Xiao-Jie Dong et al.

Summary: In this study, a composite nanoscale COF material loaded with an inorganic photothermal agent, CuS, and an organic photosensitizer, BODIPY, was synthesized via stepwise post-synthetic modification. The resulting CuS@COF-BDP showed efficient singlet oxygen generation and photothermal conversion abilities, making it a promising dual-modal therapeutic agent for highly inhibiting MCF-7 tumor cell proliferation.

CHEMICAL COMMUNICATIONS (2022)

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Article Chemistry, Multidisciplinary

A covalent organic framework as a photocatalyst for window ledge cross-dehydrogenative coupling reactions

Fan Yang et al.

Summary: The benzothiadiazole-involved donor-acceptor covalent organic framework with high crystallinity and strong light-harvesting capability is an effective photocatalyst for window ledge aerobic cross-dehydrogenative coupling reactions, even at gram levels.

CHEMICAL COMMUNICATIONS (2022)

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Article Chemistry, Multidisciplinary

A nanostructured covalent organic framework with readily accessible triphenylstibine moieties for high-performance supercapacitors

Kun Kang et al.

Summary: A pristine, redox-active triphenylstibine based COF (Sb-COF) with well-uniform nanostructures provides sufficient electron conduction pathways and minimizes ion transport lengths, enabling easy access of triphenylstibine moieties by the electrolyte. The assembled Sb-COF//rGO demonstrates an excellent energy density of 69 WH kg(-1).

CHEMICAL COMMUNICATIONS (2022)

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Review Chemistry, Multidisciplinary

Semiconducting Polymers for Oxygen Evolution Reaction under Light Illumination

Yuanxing Fang et al.

Summary: This review focuses on the photocatalytic technologies and materials of polymeric photocatalysts for the oxygen evolution reaction (OER). Two practical systems, namely particle suspension and film-based photoelectrochemical systems, are discussed. The concept is reviewed in terms of thermodynamics and kinetics, and the key characteristics of polymeric photocatalysts, such as light absorption, charge separation and transfer, and surface oxidation reactions, are examined. Satisfactory OER performance by polymeric photocatalysts could lead to cost-effective, sustainable, and renewable water splitting and other advanced applications using solar energy.

CHEMICAL REVIEWS (2022)

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Review Chemistry, Multidisciplinary

Emerging porous organic polymers for biomedical applications

Youlong Zhu et al.

Summary: This review summarizes the recent progress in the biomedical applications of porous organic polymers (POPs), including drug delivery, bioimaging, and photothermal therapy.

CHEMICAL SOCIETY REVIEWS (2022)

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Review Chemistry, Multidisciplinary

Porous organic polymers for electrocatalysis

Dong-Hui Yang et al.

Summary: This paper provides a systematic overview of recent advances in the applications of porous organic polymers (POPs) as electrocatalysts in various reactions. The synthesis strategies, specific active sites, and catalytic mechanisms of POPs are summarized, and the current challenges and future directions in their electrocatalytic applications are discussed.

CHEMICAL SOCIETY REVIEWS (2022)

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Article Chemistry, Multidisciplinary

Olefin Metathesis in Confinement: Towards Covalent Organic Framework Scaffolds for Increased Macrocyclization Selectivity

Sebastian T. Emmerling et al.

Summary: Covalent organic frameworks (COFs) offer vast structural and chemical diversity, and have the potential to play a greater role in catalytic reactions. This study demonstrates the alteration of reactions under spatial confinement by immobilizing specific catalysts on COF pore walls. The results show significantly improved selectivity in macrocyclization reactions compared to homogeneous catalysts, along with a substrate-size dependency in selectivity.

CHEMISTRY-A EUROPEAN JOURNAL (2022)

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Article Environmental Sciences

Design and construction strategies to improve covalent organic frameworks photocatalyst's performance for degradation of organic pollutants

Si-Yu Hu et al.

Summary: COFs are a class of crystalline porous organic polymers that have received extensive attention in the field of photocatalytic degradation. Strategies to improve the photocatalytic activity of COFs include design of ligands and structures, with a focus on COF composites. The photocatalytic mechanism and future prospects of COFs in photocatalytic degradation are discussed.

CHEMOSPHERE (2022)

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Article Chemistry, Multidisciplinary

Copper(II) ions-immobilized virus-like hollow covalent organic frameworks for highly efficient capture and sensitive analysis of amyloid beta-peptide 1-42 by MALDI-MS

Wende Ma et al.

Summary: In this study, copper(II) ions-immobilized virus-like hollow covalent organic frameworks (V-HCOFs@Cu2+) were synthesized and applied for the enrichment and detection of Alzheimer's disease biomarker, amyloid beta-peptide 1-42 (A beta 1-42). The V-HCOFs@Cu2+ showed excellent adsorption capacity and stability, allowing for efficient capture and rapid analysis of A beta 1-42.

CHINESE CHEMICAL LETTERS (2022)

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Article Chemistry, Physical

In-situ reducing platinum nanoparticles on covalent organic framework as a sensitive electrochemical sensor for simultaneous detection of catechol, hydroquinone and resorcinol

Lei Sun et al.

Summary: A COF based electrochemical sensor was fabricated using TFPB-BD-COF, PtNPs, and NH2-MWCNTs, showing superior performance in detecting catechol, hydroquinone, and resorcinol with good linear response and low detection limits.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2022)

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Article Chemistry, Physical

A novel triazine-based covalent organic framework combined with AuNPs and reduced graphene oxide as an electrochemical sensing platform for the simultaneous detection of uric acid, dopamine and ascorbic acid

Mingyue Wang et al.

Summary: A novel triazine-based covalent organic framework and its composite were successfully constructed by in situ growth of gold nanoparticles on its surface, followed by introduction of reduced graphene oxide. The constructed nanocomposite modified electrode exhibited excellent conductivity and catalytic activity, allowing for simultaneous detection of uric acid, dopamine, and ascorbic acid in urine samples accurately and rapidly.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2022)

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Review Chemistry, Inorganic & Nuclear

Metal- and covalent organic frameworks as catalyst for organic transformation: Comparative overview and future perspectives

Sara Abednatanzi et al.

Summary: Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) as two emerging classes of highly porous compounds have shown great potential for various applications due to their distinctive properties. These materials are being extensively studied by both academic and industrial scientists, but there is still a need for further exploration into their structural design and advanced applications.

COORDINATION CHEMISTRY REVIEWS (2022)

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Review Chemistry, Inorganic & Nuclear

Covalent organic frameworks promoted single metal atom catalysis: Strategies and applications

Vasudha Hasija et al.

Summary: This review discusses the strategic synthesis, advanced characterization, and catalytic applications of COF-based SACs, highlighting the potential of COFs for fulfilling the prerequisites of SACs formation and their performance in catalytic energy-related applications. It also presents a critical discussion on the strategic synthesis of COF-based SACs and the challenges, foresighted ideas, and future perspectives for COF-based SACs.

COORDINATION CHEMISTRY REVIEWS (2022)

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Review Chemistry, Multidisciplinary

MOF-COF Composite Photocatalysts: Design, Synthesis, Mechanism

Guangsong Yuan et al.

Summary: This paper provides a detailed discussion on the design, synthesis, and mechanistic analysis of MOF-COF photocatalysts. It covers the improvement of photocatalytic properties through MOF-COF heterojunction structures, the synthesis of MOF-COF photocatalysts with different core-shell and non-core-shell structures, and the analysis of photocatalytic mechanisms for hydrogen evolution and photodegradation. The challenges and opportunities of MOF-COF photocatalysts are also discussed.

CRYSTAL GROWTH & DESIGN (2022)

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Review Chemistry, Multidisciplinary

Solar fuels: research and development strategies to accelerate photocatalytic CO2 conversion into hydrocarbon fuels

Eunhee Gong et al.

Summary: This review highlights recent advances, challenges, and potential solutions in photocatalytic production of solar fuels from CO2, including discussions on various catalysts and reaction mechanisms.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Controllable encapsulation of silver nanoparticles by porous pyridine-based covalent organic frameworks for efficient CO2 conversion using propargylic amines

Yize Zhang et al.

Summary: The study demonstrates the synthesis of silver nanoparticles using two pyridine-based covalent organic frameworks (COFs) with rich porosity, showing outstanding catalytic activity for the carboxylative cyclization of propargylic amines with CO2. By regulating the position of pyridinic-N in the frameworks, selective confinement of silver sites to specific sizes in different pores is achieved, influencing catalytic activity and stability. The ultrasmall nanoparticles in Ag@2,6-FPP-TAPT exhibit enhanced catalytic activity due to synergistic effects among particle size, mass transfer, adsorption and activation for propargylic amines and CO2, supporting scalable preparative ability with full conversion and high TOF value in continuous-flow conditions.

GREEN CHEMISTRY (2022)

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Article Chemistry, Inorganic & Nuclear

Combination of a Metal-N-Heterocyclic-Carbene Catalyst and a Chiral Aminocatalyst within a Covalent Organic Framework: a Powerful Cooperative Approach for Relay Asymmetric Catalysis

Yue Li et al.

Summary: The incorporation of metal catalysis and organocatalysis is a promising strategy for developing new organic reactions. In this study, we successfully synthesized an imine-linked chiral covalent organic framework (CCOF) through the combination of a Au-N-heterocyclic-carbene (NHC-Au) monomer with a chiral secondary amine-containing counterpart. This CCOF demonstrated excellent performance as a reusable dual catalyst in promoting the asymmetric aryl methanol oxidation-aldol relay reaction.

INORGANIC CHEMISTRY (2022)

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Article Chemistry, Physical

Photo-induced synthesis of ternary Pt/rGO/COF photocatalyst with Pt nanoparticles precisely anchored on rGO for efficient visible-light-driven H2 evolution

Yu-Hao Yao et al.

Summary: A new type of ternary Pt/rGO/COF photocatalysts was fabricated with Pt cocatalyst precisely anchored on rGO to enhance the H-2 evolution rate. The high activity of the hybrid material was achieved through one-pot photoreduction of Pt4+ and GO under visible-light irradiation, with simultaneous self-assembling of rGO/COF heterostructure.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Chemistry, Multidisciplinary

A novel multiemissive Ln/covalent-organic frameworks for ratiometric detection of 2,6-dipicolinic acid

Lijuan Kuang et al.

Summary: A multi-emission Eu3+/covalent-organic framework (COFDTA-TFP) and Tb3+/COFDTA-TFP were constructed for ratiometric detection of 2,6-dipicolinic acid (DPA). The sensors exhibited high sensitivity and accuracy in detecting DPA.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2022)

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Article Chemistry, Physical

Hierarchical Core-Shell ACOF-1@BiOBr as an Efficient Photocatalyst for the Degradation of Emerging Organic Contaminants

Ahmed E. ElMetwally et al.

Summary: A hierarchical coreshell structure of nanostructured ACOF-1@BiOBr was prepared and its performance in the degradation of organic contaminants under light irradiation was demonstrated. The enhanced photocatalytic activity of the ACOF-1@BiOBr system can be attributed to the synergy between ACOF-1 and BiOBr, which form a Type-II heterostructure that reduces the recombination rate of photogenerated charge carriers. The ACOF-1@BiOBr system also exhibited enhanced generation of superoxide radicals.

JOURNAL OF PHYSICAL CHEMISTRY C (2022)

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Article Chemistry, Physical

Dithiine Bridged Phthalocyanine-Based Covalent Organic Frameworks for Highly Efficient Oxygen Reduction Reaction

Xueli Li et al.

Summary: The rational regulation of the oxygen reduction catalytic activity of transition metal/nitrogen-doped carbon is important for sustainable energy conversion devices. In this study, a series of covalent organic frameworks with dithiine bridges were designed and the effect of dithiine on oxygen reduction was studied. The results showed that the introduction of dithiine can improve the catalytic activity by modifying the electronic structure of the metal atoms.

JOURNAL OF PHYSICAL CHEMISTRY C (2022)

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Article Chemistry, Multidisciplinary

Piperazine-Linked Covalent Organic Frameworks with High Electrical Conductivity

Yan Yue et al.

Summary: A new kind of piperazine-linked covalent organic framework (COF) was successfully synthesized through nucleophilic substitution reaction. The COF exhibits excellent chemical stability and permanent porosity, and possesses high conductivity and carrier mobility.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Constructing Stable Chromenoquinoline-Based Covalent Organic Frameworks via Intramolecular Povarov Reaction

Xiao-Rui Ren et al.

Summary: A novel synthetic approach was used to construct chemically stable CQ linkages in COFs, achieving dual-mode sensing of strongly acidic environments.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Entanglement of Square Nets in Covalent Organic Frameworks

Fangying Jin et al.

Summary: Two entangled 2D square covalent organic frameworks (COFs) have been synthesized, representing the first examples of this type of structure. The single-crystal electron diffraction structure of one of the COFs reveals that it is composed of mutually entangled square nets. This work significantly advances the design principles of COFs.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Applied

The recent research progress and application of nanoparticles and ions supporting by covalent organic frameworks

Yiwen Ma et al.

Summary: Covalent organic frameworks (COFs) show great potential in catalysis, adsorption, and separation due to their large surface area, high crystallinity, tunable pore size, and unique molecular architecture. COFs can serve as ideal supports for unstable small materials like nanoparticles, ions, quantum dots, and single atoms, allowing for stable existence and wide application in various fields. This article presents recent advances in the design and synthesis of COF-supported hybrid materials for various applications and discusses future research directions and prospects for the development of efficient COF-supported hybrids.

MICROPOROUS AND MESOPOROUS MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Quasi-Phthalocyanine Conjugated Covalent Organic Frameworks with Nitrogen-Coordinated Transition Metal Centers for High-Efficiency Electrocatalytic Ammonia Synthesis

Minghang Jiang et al.

Summary: The study presents a pyrolysis-free approach to incorporate ordered quasi-phthalocyanine N-coordinated transition metal centers into a 2D covalent organic framework for enhanced NRR performance. Among the Ti, Cu, and Co variants, Ti-COF exhibited superior NRR activity due to its ability to activate N-2 molecules and suppress HER. This work demonstrates the potential of 2D-COF materials with coordinated transition metal centers for efficient electrocatalytic NRR.

NANO LETTERS (2022)

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Review Microbiology

Physical properties of the bacterial outer membrane

Jiawei Sun et al.

Summary: This review discusses the emerging physical and mechanical properties of the Gram-negative outer membrane, revealing a more expansive and versatile role in cellular physiology and viability. Recent studies have uncovered key molecular factors and interactions through experimental and computational research, while advancements in microfluidics and microscopy have contributed to a better understanding of the structural, rheological, and mechanical properties of the outer membrane. These findings suggest broader connections between cellular structure and physiology, with future prospects for elucidating the implications of outer membrane construction for cellular fitness and survival.

NATURE REVIEWS MICROBIOLOGY (2022)

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Review Microbiology

Tolerance and resistance of microbial biofilms

Oana Ciofu et al.

Summary: Chronic infections caused by microbial biofilms pose a significant clinical challenge due to the resistance of biofilms to antimicrobials and the immune system, leading to persistent and recurrent infections. This Review discusses the current understanding of the mechanisms underlying the tolerance of biofilms to the immune system and to antimicrobials, as well as their role in the development of antimicrobial resistance.

NATURE REVIEWS MICROBIOLOGY (2022)

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Article Chemistry, Organic

A Zn(ii)-functionalized COF as a recyclable catalyst for the sustainable synthesis of cyclic carbonates and cyclic carbamates from atmospheric CO2

Somnath Sarkar et al.

Summary: This study reports a simple covalent organic framework (COF) as a potential heterogeneous ligand for the Zn-II-catalyzed fixation and transformation of CO2 into value-added chemicals. The catalytic investigations convincingly demonstrated the perfect catalytic activity of the Zn-II-functionalized COF in the fixation of CO2 for diverse epoxides and atmospheric cyclizative CO2 capture.

ORGANIC & BIOMOLECULAR CHEMISTRY (2022)

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Review Materials Science, Multidisciplinary

Metal-containing covalent organic framework: a new type of photo/electrocatalyst

Xiao-Tong Wang et al.

Summary: Metal-containing covalent organic frameworks (MCOFs) with abundant single-atom metal sites can effectively respond to various vital reactions. The advent of MCOFs provides a platform for the establishment of model catalysts with highly repetitive structure and design flexibility to develop highly selective and active photo/electrocatalysts.

RARE METALS (2022)

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Review Chemistry, Multidisciplinary

Luminescent Covalent Organic Frameworks for Biosensing and Bioimaging Applications

Jianxin Ma et al.

Summary: Luminescent covalent organic frameworks (LCOFs) have garnered significant attention for their tunable structures and photophysical properties at the molecular level. They offer advantages such as predesigned structure properties, unique photoluminescence, low toxicity, good biocompatibility, and tumor penetration, expanding their applications in biosensing and bioimaging. The key role of chemical linkages in the synthetic chemistry of LCOFs affects their optical properties and potential sensing applications, while structure management determines their brightness and potential applications in biosensing and bioimaging. Challenges and opportunities in LCOFs development are discussed in terms of their current progress in chemistry, physics, and applications.

SMALL (2022)

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Article Chemistry, Multidisciplinary

Neodymium (3+)-Coordinated Black Phosphorus Quantum Dots with Retrievable NIR/X-Ray Optoelectronic Switching Effect for Anti-Glioblastoma

Zhi Li et al.

Summary: The synthesis of Nd3+ ion coordinated black phosphorus quantum dots aims to enhance their performance in NIR-II fluorescence imaging and X-ray induced photodynamic therapy, allowing for precise monitoring and inhibition of glioblastoma progression.

SMALL (2022)

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Article Chemistry, Multidisciplinary

Boosting Polysulfide Catalytic Conversion and Facilitating Li+ Transportation by Ion-Selective COFs Composite Nanowire for Li-S Batteries

Wenqi Yan et al.

Summary: By constructing a multi-layer structure with boroxine covalent organic frameworks on carbon nanotubes to improve lithium ion conductivity and enrich the heterointerfaces between the inner conductive material and the outer material, this study addresses the challenges of capacity decay and low sulfur utilization in lithium-sulfur batteries.

SMALL (2022)

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Article Spectroscopy

SERS Detection of Benzoic Acid in Milk by Using Ag-COF SERS Substrate

Zichen Yang et al.

Summary: A surface-enhanced Raman scattering (SERS) method using Ag-COF material as substrate has been developed for the detection of benzoic acid in milk, showing high sensitivity and reliability. This method provides a new approach for the detection of benzoic acid in dairy products.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY (2022)

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Article Chemistry, Analytical

Eu3+-β-diketone functionalized covalent organic framework hybrid material as a sensitive and rapid response fluorescent sensor for glutaraldehyde

Yinghua Jia et al.

Summary: A covalent organic framework with remarkable luminescence properties, named TpDq, was synthesized and used as a fluorescent probe for detecting glutaraldehyde. The probe showed advantages of reusability, high pH stability, fast response time, and low detection limit.

TALANTA (2022)

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Article Chemistry, Multidisciplinary

A BINOL-phosphoric acid and metalloporphyrin derived chiral covalent organic framework for enantioselective α-benzylation of aldehydes

Hui-Chao Ma et al.

Summary: This study reports a facile approach for the asymmetric intermolecular alpha-benzylation of aldehydes using a multifunctional chiral covalent framework catalyst. The reaction can effectively proceed under natural sunlight irradiation and shows broad generality.

CHEMICAL SCIENCE (2022)

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Article Multidisciplinary Sciences

Ultrafast charge transfer dynamics in 2D covalent organic frameworks/Re-complex hybrid photocatalyst

Qinying Pan et al.

Summary: In this study, the researchers investigated the excitation energy-dependent pathways of internal photo-induced charge transfer in rhenium(I)-carbonyl-diimine complexes/covalent organic frameworks hybrid catalysts. The findings revealed that under high-energy photon excitation, the electron transfer pathway resulted in longer-lived excited states, facilitating the conversion of carbon dioxide to carbon monoxide.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

Self-Activation Enables Cationic and Anionic Co-Storage in Organic Frameworks

Zhangyuan Cheng et al.

Summary: The study introduces an organic framework capable of efficiently co-storing anions and cations in a single discharge/charge process, delivering high capacity and energy density. The unique cation-assisted electrode activation process and the understanding of self-activation is expected to inspire new electrode designs beyond current Li-ion batteries.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Bimetallic docked covalent organic frameworks with high catalytic performance towards coupling/oxidation cascade reactions

Yaling Li et al.

Summary: Covalent organic frameworks (COFs) are emerging crystalline porous polymers that serve as excellent scaffolds for heterogeneous catalysis. A layered two-dimensional (2D) COF (TADP-COF) was synthesized, providing wide coordination sites for metal docking and exhibiting high catalytic activity. This material, with its high surface area, one-dimensional open channel structure, and predesigned catalytic active sites, is an ideal candidate for use as a heterogeneous catalyst in various catalytic reactions.

RSC ADVANCES (2022)

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Article Chemistry, Multidisciplinary

Synergistic Decoration of Ultrasmall Pd NPs and Conductive Poly(3,4-ethylenedioxythiophene) Coatings on a Hydrazone Covalent Organic Framework for Boosting Ethanol Electrooxidation

Yuling Chen et al.

Summary: This study reports a novel synthesis strategy for improving the electrical conductivity and catalytic activity of a hydrazone-linked covalent organic framework (COF-42) for ethanol electrooxidation. The results show that the optimal products exhibit excellent catalytic performance and operational stability, which are attributed to the synergistic effect of porous COF-42, conductive PEDOT coatings, and highly dispersed Pd nanoparticles. This research holds great prospects for the development of alternate electrocatalysts for direct ethanol fuel cells.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2022)

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Article Chemistry, Applied

Construction of TiO2-covalent organic framework Z-Scheme hybrid through coordination bond for photocatalytic CO2 conversion

Lei Wang et al.

Summary: In this study, a covalent organic framework (COF) was constructed with CuTAPP and p-benzaldehyde, integrated with TiO2 to form a Z-scheme hybrid system. The framework showed enhanced photocatalytic performance in CO2 conversion, attributed to the photosensitizer effect of the porphyrin block and the establishment of a Z-scheme system for carrier separation.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Chemistry, Physical

Three-dimensional porphyrinic covalent organic frameworks for highly efficient electroreduction of carbon dioxide

Shao-Yi Chi et al.

Summary: Covalent organic frameworks (COFs), a class of promising materials, have been used to electrochemically convert CO2 into valuable chemicals. Researchers synthesized a porous three-dimensional (3D) cobalt porphyrinic COF, 3D-Por(Co/H)-COF, and found that it exhibited high activity and efficiency for the CO2 reduction reaction. This work provides a new approach to improve electrocatalytic activity by changing the dimensions of the catalyst.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Chemistry, Physical

Covalent organic framework based multifunctional self-sanitizing face masks

Luo-Gang Ding et al.

Summary: Face masks play a crucial role in self-protection during pandemics, but the massive use of disposable masks leads to environmental challenges. Therefore, the development of self-sanitizing reusable masks is highly urgent. This mask, based on a covalent organic framework, demonstrates excellent antibacterial and antiviral performance under natural sunlight.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Chemistry, Physical

COFs-based electrolyte accelerates the Na+ diffusion and restrains dendrite growth in quasi-solid-state organic batteries

Genfu Zhao et al.

Summary: The study investigates a novel strategy of using carboxylic acid sodium functionalized polyarylether linked COF as an advanced Na-ion quasi-solid-state conductor film, which exhibits outstanding Na+ conductivity and long-time cycling performance while inhibiting dendrite growth.

NANO ENERGY (2022)

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Review Chemistry, Multidisciplinary

Recent Progress of Sub-Nanometric Materials in Photothermal Energy Conversion

Qichen Lu et al.

Summary: This review discusses the importance of sub-nanometric materials (SNMs) in photothermal energy conversion, including the synthesis methods and photothermal performance of SNMs with different morphologies. The applications of photothermal SNMs in solar vapor generation, biomedicine, and light-responsive composites construction are also highlighted.

ADVANCED SCIENCE (2022)

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Review Chemistry, Multidisciplinary

Metal-Organic Polyhedra as Building Blocks for Porous Extended Networks

Akim Khobotov-Bakishev et al.

Summary: This review article discusses the key developments that make the extension of Metal-organic polyhedra (MOPs) possible, highlighting the most remarkable examples of MOP-based soft materials and crystalline extended frameworks. The article also ventures to offer future perspectives on the exploitation of MOPs in fields that still remain ripe toward the use of such unorthodox molecular porous platforms.

ADVANCED SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Polyarylether-Based 2D Covalent-Organic Frameworks with In-Plane D-A Structures and Tunable Energy Levels for Energy Storage

Nana Li et al.

Summary: In this study, a series of new polyarylether-based COFs with narrow band gaps and ultra-low resistance were synthesized via a direct reaction between hexadecafluorophthalocyanine and octahydroxyphthalocyanine. These COFs, composed of two different metal-sites, exhibited improved carrier mobility through layer-altered stacking mode according to density functional theory calculation. Furthermore, these COFs and electrochemically exfoliated graphene were used to fabricate in-plane micro-supercapacitors with excellent volumetric capacitances and stability in acidic electrolyte.

ADVANCED SCIENCE (2022)

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Review Chemistry, Multidisciplinary

Photothermal Chemistry Based on Solar Energy: From Synergistic Effects to Practical Applications

Jianan Hong et al.

Summary: Solar-driven chemistry, particularly photothermal chemistry (PTC), offers a promising solution to energy conversion and environmental remediation issues. By analyzing the mechanisms of PTC such as thermal and non-thermal effects, as well as their synergy, a better understanding and systematic design of PTC processes can be achieved. Although still some distance from practical application, key considerations and workable suggestions for engineering application of PTC are highlighted in this review.

ADVANCED SCIENCE (2022)

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Article Materials Science, Multidisciplinary

Nanoscale covalent organic framework for the low-temperature treatment of tumor growth and lung metastasis

Jie Feng et al.

Summary: The development of photothermal strategies with excellent therapeutic efficiencies under low-temperature conditions is crucial for tumor treatments. By using a multimodal therapeutic agent GA@PCOF@PDA, which combines photodynamic therapy, heat-shock protein down-regulation, and chemotherapy, this study illustrates an efficient approach to design high-performance nanoagents for improved cancer theranostics at low temperatures.

SCIENCE CHINA-MATERIALS (2022)

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Article Materials Science, Multidisciplinary

Cobalt sandwich complex-based covalent organic frameworks for chemical fixation of CO2

Yang Li et al.

Summary: Co-BD-COF is a new type of COF with high crystallinity and large surface area, capable of efficiently catalyzing the transformation of CO2 into cyclic carbonates. It also demonstrates high catalytic selectivity towards small ethylene oxide derivatives in cycloaddition reactions. This new metal sandwich-type building block provides a new strategy for improving the catalytic selectivity of COFs.

SCIENCE CHINA-MATERIALS (2022)

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Review Energy & Fuels

Strategies to improve light utilization in solar fuel synthesis

Qian Wang et al.

Summary: The synthesis of fuels using sunlight offers a promising sustainable solution for chemical energy storage, but inefficient utilization of the solar spectrum has limited their broader viability. This Review looks at how approaches that are complementary to one another can be employed to better exploit solar energy for sunlight-to-fuel conversion.

NATURE ENERGY (2022)

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Article Chemistry, Multidisciplinary

Enhanced Photocatalytic Activity of Porphyrin Nanodisks Prepared by Exfoliation of Metalloporphyrin-Based Covalent Organic Frameworks

Xinxi Li et al.

Summary: The synthesis of organic polymers from COFs by changing the unit molecule can enhance photocatalytic activity. In this study, the exfoliation of metalloporphyrin-based COFs and adjustment of the layer thickness were found to enhance photocatalytic activity.

ACS OMEGA (2022)

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Article Green & Sustainable Science & Technology

Predesigned Covalent Organic Frameworks as Effective Platforms for Pd(II) Coordination Enabling Cross-Coupling Reactions under Sustainable Conditions

Alberto Lopez-Magano et al.

Summary: The study demonstrated the stable coordination of palladium centers by the phenanthroline unit in Phen-COF, leading to enhanced catalytic activities and recyclability. The concept of isolating and immobilizing catalytic sites in Pd@Phen-COF significantly improved catalytic outputs compared to analogous molecular catalysts, particularly in C-C cross-coupling reactions.

ADVANCED SUSTAINABLE SYSTEMS (2022)

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Article Nanoscience & Nanotechnology

Self-Exfoliating Double-Emission N-Doped Carbon Dots in Covalent Organic Frameworks for Ratiometric Fluorescence Off-On Cu2+ Detection

Shiqi Wang et al.

Summary: By encapsulating nitrogen-doped carbon dots (NCDs) in COFTAPT-TT, NCCOFTAPT-TT nanosheets with improved dispersion and stability were successfully prepared. This off-on ratiometric fluorescent sensor exhibits high sensitivity, good selectivity, and good stability for the detection of Cu2+ ions.

ACS APPLIED NANO MATERIALS (2022)

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Review Chemistry, Physical

Metal/Covalent-Organic Framework Based Cathodes for Metal-Ion Batteries

Lingjun Kong et al.

Summary: Metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs) are emerging families of functional materials with immense potential for high-performance electrode materials for metal-ion batteries. Despite their advantages, MOFs/COFs and their derivatives face challenges as cathode materials.

ADVANCED ENERGY MATERIALS (2022)

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Review Chemistry, Physical

Two-Dimensional Metal-Organic Frameworks and Covalent-Organic Frameworks for Electrocatalysis: Distinct Merits by the Reduced Dimension

Min Kyung Lee et al.

Summary: This review discusses the potential of MOFs and COFs for developing efficient electrocatalysts, focusing on 2D materials with unique properties like large surface area and enhanced electrical conductivity. It also highlights the synthesis methods, advantages, recent advances, and challenges in utilizing 2D materials for various electrocatalytic reactions.

ADVANCED ENERGY MATERIALS (2022)

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Review Chemistry, Physical

2D Covalent-Organic Framework Electrodes for Supercapacitors and Rechargeable Metal-Ion Batteries

Sharath Kandambeth et al.

Summary: 2D-COFs are promising materials for electrochemical energy storage due to their ordered structure design, tunable pore size, and ability to accommodate mobile ions with different sizes and charges, making them suitable for various types of batteries. Their strong covalently linked framework backbone also provides long cycle life and stability against leaching out in strong electrolytes.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Aqueous Synthesis of Covalent Organic Frameworks as Photocatalysts for Hydrogen Peroxide Production

Fanglin Tan et al.

Summary: A liquid crystal-directed synthesis method was proposed for the production of highly crystalline COFs in water and air. The synthesized COFs are organic semiconductors with macropores and mesopores, making them attractive catalysts. The yield reached up to 94%, demonstrating the generality of the method.

CCS CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Tunable Cage-Based Three-Dimensional Covalent Organic Frameworks

Chunqing Ji et al.

Summary: A novel strategy was utilized to construct three-dimensional crystalline covalent organic frameworks with fine-tunable network conformations, which were further applied for CO2 capture with superior performance demonstrated by 3D-OC-COF-OH.

CCS CHEMISTRY (2022)

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Review Chemistry, Multidisciplinary

Strategic Use of Visible-Light Photoredox Catalysis in Natural Product Synthesis

Spencer P. Pitre et al.

Summary: Recent progress in visible light photocatalytic reactions has revitalized the use of photochemistry in the synthesis of complex organic molecules. This review examines total syntheses published by the end of 2020 that employ visible-light photoredox catalysis, providing insights on functional group compatibility and synthetic strategies.

CHEMICAL REVIEWS (2022)

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Article Chemistry, Multidisciplinary

Self-assembly of single metal sites embedde d covalent organic frameworks into multi-dimensional nanostructures for efficient CO2 electroreduction

Yi-Lu Yang et al.

Summary: Morphology-controlled electrocatalysts with porphyrin-based COFs as precursors were synthesized, resulting in three types of multi-dimensional nanostructures. These nanostructures exhibited high stability, large surface area, and single metal sites, enabling efficient CO2RR into CH4.

CHINESE CHEMICAL LETTERS (2022)

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Article Chemistry, Analytical

Functionalization of Covalent Organic Frameworks with DNA via Covalent Modification and the Application to Exosomes Detection

Jianyang Lu et al.

Summary: In this study, we proposed a functionalization strategy for covalent organic frameworks (COFs) using DNA. The DNA-functionalized COFs exhibited good hybridization ability and cargo loading ability. Based on this, an electrochemical biosensor for the detection of exosomes was developed. The functionalized COFs enabled the recognition and capture of exosomes, while the encapsulation of methylene blue in the COFs enhanced the sensitivity of the biosensor.

ANALYTICAL CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Synthesis of Chiral Covalent Organic Frameworks via Asymmetric Organocatalysis for Heterogeneous Asymmetric Catalysis

Fei Li et al.

Summary: A general and efficient organocatalytic asymmetric polymerization approach has been developed for the synthesis of chiral covalent organic frameworks (CCOFs). Using a chiral 2-methylpyrrolidine catalyst, a series of chiral beta-ketoenamine-CCOFs were directly constructed from prochiral aldehyde- and primary amine-monomers. The obtained CCOFs can be further metalated and used as highly efficient catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Crystalline Porphyrazine-Linked Fused Aromatic Networks with High Proton Conductivity

Yoon-Kwang Im et al.

Summary: A highly stable and crystalline FAN, named Pz-FAN, was synthesized in this study using a single building block. The newly prepared Pz-FAN exhibited high proton conductivity and physicochemical stability. This material shows potential for application in proton-exchange membrane fuel cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Physical

Ionic covalent organic nanosheet anchoring discrete copper for efficient quasi-homogeneous photocatalytic proton reduction

Ying Zang et al.

Summary: The covalent organic nanosheet matrix successfully demonstrated an atomic-level coordination modulation strategy, enabling the synthesis of other non-precious metal-based hybrid materials, indicating progress towards a recyclable and efficient HER catalyst.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Physical

A fully-conjugated covalent organic framework-derived carbon supporting ultra-close single atom sites for ORR

Shuai Yang et al.

Summary: This study presents a novel strategy to fabricate 2D carbon nanorods from COFs and investigates their catalytic performance in the oxygen reduction reaction. The resulting catalyst exhibits high catalytic activity and provides new insights into the development of single atom catalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Physical

Two-dimensional graphdiyne analogue containing Mo-coordinated porphyrin covalent organic framework as a high-performance electrocatalyst for nitrogen fixation

Cong Wang et al.

Summary: In this study, the electrocatalytic behaviors of a series of 2D metalloporphyrin-based GDY analogues towards NRR were investigated. It was found that 2D Mo-PDY exhibited superior catalytic performance with an ultralow overpotential and the ability to inhibit competitive reactions.

APPLIED SURFACE SCIENCE (2022)

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Article Chemistry, Physical

A novel electrochemical kidney injury molecule-1 (KIM-1) immunosensor based covalent organic frameworks-gold nanoparticles composite and porous NiCo2S4@CeO2 microspheres: The monitoring of acute kidney injury

Havva Boyacioglu et al.

Summary: This study describes a new method for rapid diagnosis of kidney injury. A sensitive and selective kidney injury immunosensor was fabricated using porous NiCo2S4@CeO2 microspheres as a signal amplifier and COFs-AuNPs composite as an electrochemical sensor platform. The immunosensor showed high detection sensitivity and accuracy, making it a valuable tool for monitoring acute kidney injury.

APPLIED SURFACE SCIENCE (2022)

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Article Chemistry, Applied

Cobalt and nickel coordinated guanidinium-based two-dimensional covalent organic framework nanosheets for efficient photocatalytic CO2 reduction

Hai-Bo Wu et al.

Summary: This study successfully synthesized cobalt and nickel coordinated two-dimensional covalent organic framework nanosheets for photocatalytic CO2 reduction to CO and H2. Among them, the cobalt coordinated CONs showed better catalytic performance with longer fluorescence lifetimes and higher CO2 absorption capacity.

CATALYSIS TODAY (2022)

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Article Chemistry, Physical

Unassisted Uranyl Photoreduction and Separation in a Donor- Acceptor Covalent Organic Framework

Yiting Song et al.

Summary: The donor-acceptor covalent organic framework TTT-DTDA was found to have long-lived excited states, allowing for direct photoreduction of uranium. Illumination in solutions containing only uranyl ions produced crystalline uranyl peroxide species on the COF. TTT-DTDA COF showed high selectivity for uranium and recyclability in competing ion experiments.

CHEMISTRY OF MATERIALS (2022)

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Article Chemistry, Physical

Ultra-Fast Synthesis of Single-Crystalline Three-Dimensional Covalent Organic Frameworks and Their Applications in Polarized Optics

Lan Peng et al.

Summary: This study demonstrates the first example of fast growth of 3D COF single crystals using supercritical solvothermal polymerization, which allows for efficient and precise construction of highly crystalline products and results in unique optical properties.

CHEMISTRY OF MATERIALS (2022)

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Article Environmental Sciences

Covalent organic framework-based porous materials for harmful gas purification

Yan Huang et al.

Summary: This review comprehensively discusses the recent progress of covalent organic frameworks (COFs) in gas purification, especially in the capture, catalysis, and detection of common harmful gases. The design strategies of COF functional materials and the challenges and future research directions in this field are also summarized.

CHEMOSPHERE (2022)

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Article Chemistry, Physical

In situ synthesis of 2D/2D MXene-COF heterostructure anchored with Ag nanoparticles for enhancing Schottky photocatalytic antibacterial efficiency under visible light

Wei Wang et al.

Summary: This study successfully synthesized a Ti3C2/TpPa-1/Ag composite material with high efficiency bactericidal properties by covalently connecting MXenes and COFs, improving material stability, and forming electron transfer channels among the ternary materials to enhance carrier separation efficiency.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Biochemistry & Molecular Biology

High antibacterial activity of chitosan films with covalent organic frameworks immobilized silver nanoparticles

Xinxian Dai et al.

Summary: In this study, a chitosan film containing covalent organic frameworks immobilized silver nanoparticles was developed for food packaging. The film showed improved antibacterial activities and film properties, making it a promising material for active food packaging.

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES (2022)

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Article Chemistry, Multidisciplinary

2D Covalent Organic Frameworks with cem Topology

Xuan Wang et al.

Summary: In this study, three 2D porous covalent organic frameworks (COFs) with unprecedented cem topology were successfully synthesized by linking pseudo-fivefold symmetric 1,2,3,4,5-penta(4-formylphenyl)pyrrole with linear aromatic diamines. These COFs exhibited high thermal and chemical resistances and showed excellent performance in the separation of polycyclic aromatic hydrocarbons using HPLC columns.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Isoreticular Series of Two-Dimensional Covalent Organic Frameworks with the kgd Topology and Controllable Micropores

Liuxiao Li et al.

Summary: This study synthesizes a series of 2D COFs with the kgd topology and controllable pore size, achieving one of the smallest reported pore sizes for 2D COFs at 6.7 A. The in-plane network and stacking sequence of these COFs can be clearly observed by low-dose electron microscopy. With the unique combination of kgd topology and small rhombic micropores, these 2D COFs exhibit potential for drug delivery with high loading and good release control of ibuprofen.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Fused-Ring-Linked Covalent Organic Frameworks

Jie Feng et al.

Summary: The development of linkage chemistry in covalent organic frameworks (COFs) is crucial for creating stable and highly crystalline structures with diversified functionality. By synthesizing fused-ring-linked COFs, researchers have achieved a new level of complexity and controllability in linkage chemistry, opening up new possibilities for the construction of sophisticated COF structures with high controllability.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Bottom-Up Synthesis of 8-Connected Three-Dimensional Covalent Organic Frameworks for Highly Efficient Ethylene/Ethane Separation

Fazheng Jin et al.

Summary: By rationally designing and synthesizing three-dimensional COFs with 8-connected bcu networks, high crystallinity, good structural robustness, and high porosity, efficient removal of ethane and separation of ethylene/ethane can be achieved, providing important guidance for ethylene purification.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

3D Covalent Organic Frameworks with Interpenetrated pcbTopology Based on 8-Connected Cubic Nodes

Zhen Shan et al.

Summary: This study presents the successful design and synthesis of an aporphyrin-based 8-connected building block, greatly enriching the topological possibilities of 3D COFs.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Amorphous-to-Crystalline Transformation: General Synthesis of Hollow Structured Covalent Organic Frameworks with High Crystallinity

Zeshan Xiong et al.

Summary: This study reports a versatile and efficient strategy of amorphous-to-crystalline transformation for the fabrication of highly crystalline HCOFs. The approach allows for the control of hollowing process and crystallization process by regulating the dynamic imine exchange reaction. Various HCOFs with ultrahigh surface areas and uniform morphologies were successfully synthesized, and COF-based yolk-shell nanostructures with functional interior cores were also fabricated. The obtained metal@HCOFs catalysts showed enhanced catalytic activity and size-selectivity, highlighting the significance of nucleation-growth kinetics of COFs in tuning their morphologies, structures, and applications.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Dual Metalation in a Two-Dimensional Covalent Organic Framework for Photocatalytic C-N Cross-Coupling Reactions

Ayan Jati et al.

Summary: This study presents a dual metalation strategy using a COF TpBpy for C-N cross-coupling reactions. The strategy demonstrates controlled metalation, recyclability, and visible-light-mediated catalysis. Experimental and theoretical studies provide insights into the catalyst and reaction mechanism.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Synthesis of Metal-Free Chiral Covalent Organic Framework for Visible-Light-Mediated Enantioselective Photooxidation in Water

Xuan Kan et al.

Summary: In this study, a novel type of chiral covalent organic frameworks (CCOFs) was reported for the first time, which can achieve enantioselective photocatalytic reactions. The researchers successfully applied this framework to the photooxidation reaction of sulfides to sulfoxides and the synthesis of (R)-modafinil.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Electrocleavage Synthesis of Solution-Processed, Imine-Linked, and Crystalline Covalent Organic Framework Thin Films

Lingling Wang et al.

Summary: An unprecedented electrocleavage synthesis strategy is reported for the direct synthesis of COF films at room temperature. This strategy involves the cathodic exfoliation of COF powders to nanosheets, followed by nanosheets migrating to the anode and reproducing the COF structures by anodic oxidation. The COF films possess high crystallinity and hierarchical porosity, and have demonstrated rapid iodine adsorption with record-high rate constants, making them an excellent platform for promoting mass transfer.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Review Chemistry, Multidisciplinary

Reticular Nanoscience: Bottom-Up Assembly Nanotechnology

Jacopo Andreo et al.

Summary: The chemistry of metal-organic and covalent organic frameworks (MOFs and COFs) is highly diverse and inclusive. When blended with nanotechnology, it forms reticular nanoscience with immense potential in various technological fields. This article explores the possibilities of framework nanoparticles, their unique properties, and potential applications in medicine, catalysis, energy, and sensors. It also introduces the concept of augmented reticular chemistry, which aims to reach higher dimensions and complexity in materials.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Fabrication of a Covalent Organic Framework-Based Heterojunctionvia Coupling with ZnAgInS Nanosphere with High PhotocatalyticActivity

Jun Wang et al.

Summary: This research improves the photocatalytic performance of COFs by forming a heterojunction with ZnAgInS nanospheres, resulting in enhanced degradation of organic pollutants.

LANGMUIR (2022)

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Review Nanoscience & Nanotechnology

Advancements in release-active antimicrobial biomaterials: A journey from release to relief

Brinta Bhattacharjee et al.

Summary: The escalating medical expenses due to infectious diseases are causing huge socioeconomic pressure globally, with antibiotic resistance further aggravating the issue. Various strategies including antibacterial agent delivering matrices and bactericidal coatings have been developed to address these clinical problems. Additionally, implant/device-surface coating strategies exploiting the release-active mechanism of bacterial killing are discussed in detail.

WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY (2022)

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Article Chemistry, Analytical

Postsynthetic functionalization of covalent organic frameworks for dual channel fluorescence diagnosis of two indicators related to Parkinson's disease

Jinmin Wang et al.

Summary: Developing facile and reliable analytical technologies for disease diagnosis is crucial but challenging. In this study, a dual channel-driven fluorescence sensor was designed for simultaneous analysis of HVA and Al3+, offering promising prospects for accurate and non-invasive disease diagnosis.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

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Article Chemistry, Analytical

Fluorescent determination of cysteine and homocysteine via adjustable synthesis of flower-shaped covalent organic frameworks

Yuting Wang et al.

Summary: This study presents a facile and controllable approach for synthesizing high-performance fluorescent covalent organic frameworks (COFs). The influence of acetic acid and reaction time on the morphology and properties of COFs is explored. Flower-shaped COFs are successfully prepared and used for highly sensitive detection of Cys and Hcy.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

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Article Engineering, Chemical

Photocatalytic detoxification of hazardous pymetrozine pesticide over two-dimensional covalent-organic frameworks coupling with Ag3PO4 nanospheres

Jisheng Liu et al.

Summary: A Z-scheme Ag3PO4/TpPa-1-COF heterojunction was constructed by coupling 2D pi-pi stacking covalent organic framework with Ag3PO4 nanospheres. The heterojunction exhibited excellent photocatalytic activity on the degradation of pesticide and dye under simulated solar irradiation. The structure of the heterojunction contributed to the enhanced photocatalytic performance.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Chemistry, Multidisciplinary

Ruthenium Complex of sp2 Carbon-Conjugated Covalent Organic Frameworks as an Efficient Electrocatalyst for Hydrogen Evolution

Yuxiang Zhao et al.

Summary: In this work, an efficient hydrogen evolution reaction (HER) catalyst, Ru@COF-1, was successfully prepared by complexation of triazine-cored sp(2) carbon-conjugated covalent organic frameworks (COFs) with ruthenium ion. The Ru@COF-1 catalyst exhibited lower overpotential and higher stability in acidic electrolytes compared to other COFs-based electrocatalysts. The nitrogen atom protonation of triazines in the acidic media greatly improved the conductivity and electrocatalytic durability of Ru@COF-1. Density functional theory calculations revealed that tetracoordinated Ru-N2Cl2 moieties contributed significantly to the outstanding HER performance of Ru@COF-1. This study provides a new direction for the development of protonated HER electrocatalysts in acidic media.

SMALL (2022)

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Article Chemistry, Multidisciplinary

Electrosynthesis of Ionic Covalent Organic Frameworks for Charge-Selective Separation of Molecules

Xingyuan Wang et al.

Summary: Covalent organic frameworks (COFs) are potential materials for engineering advanced membranes to address challenging separation demands. This study demonstrates the synthesis of ionic COFs with charged nanochannels on conductive supports using an electrical method, resulting in the rapid construction of composite membranes for charge-selective separations of small molecules. The membranes exhibit remarkable molecular separation performances due to their relatively ordered and charged nanochannels.

SMALL (2022)

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Article Multidisciplinary Sciences

Toward azo-linked covalent organic frameworks by developing linkage chemistry via linker exchange

Zhi-Bei Zhou et al.

Summary: Exploring new linkage chemistry for covalent organic frameworks (COFs) is a strong driving force for promoting the development of this class of porous materials. The authors report a strategy to synthesize COFs with azo linkages and explore their unique properties.

NATURE COMMUNICATIONS (2022)

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Article Multidisciplinary Sciences

In situ photodeposition of platinum clusters on a covalent organic framework for photocatalytic hydrogen production

Yimeng Li et al.

Summary: Porous covalent organic frameworks have been engineered with co-catalyst binding sites to improve photocatalytic hydrogen evolution performances. Photodeposited platinum clusters as cocatalyst on the framework make it an efficient photocatalyst for light-driven hydrogen production. This work provides a direction for structural design on covalent organic frameworks to develop efficient photocatalysts.

NATURE COMMUNICATIONS (2022)

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Article Multidisciplinary Sciences

The promotion effect of π-π interactions in Pd NPs catalysed selective hydrogenation

Miao Guo et al.

Summary: The utilization of weak interactions to improve the catalytic performance is crucial but challenging. This study demonstrates that by using imine-linked covalent organic frameworks, the weak interactions near Pd nanoparticles can be finely tuned. The pi-pi interaction between the organic frameworks and the substrate significantly reduces the activation barrier, thus enhancing the catalytic activity.

NATURE COMMUNICATIONS (2022)

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Article Multidisciplinary Sciences

Growing single crystals of two-dimensional covalent organic frameworks enabled by intermediate tracing study

Chengjun Kang et al.

Summary: Resolving the single-crystal structures of two-dimensional covalent organic frameworks (2D COFs) is a challenging task. In this study, the authors investigate the growth process of 2D COFs by tracing growth intermediates and identify two different growth mechanisms. This enables the growth and structure determination of micron-sized 2D single-crystalline COFs.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Physical

Photoelectron Transfer Mediated by the Interfacial Electron Effects for Boosting Visible-Light-Driven CO2 Reduction

Lei Zou et al.

Summary: In this study, a CdS@COF core-shell structure was successfully synthesized through a structural and electronic engineering strategy, which significantly improved the efficiency of photocatalytic CO2 reduction. The integration of CdS as an electron transfer channel enables photoelectron transfer and subsequent CO2 reduction from Zn-porphyrin to Co-bipyridyl units.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

Accelerated Direct Hydroxylation of Aryl Chlorides with Water to Phenols via the Proximity Effect in a Heterogeneous Metallaphotocatalyst

Kaixuan Wang et al.

Summary: In this study, a heterogeneous metallaphotocatalyst embedded with Ni(II) species in a photosensitive COF was reported. The concerted action of electrons, holes, and Ni species led to a significant enhancement in the activation of aryl chlorides with water. The catalyst showed 50-fold higher activity compared to its homogeneous counterpart and efficiently activated various aryl chlorides to phenols.

ACS CATALYSIS (2022)

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Article Biotechnology & Applied Microbiology

Double-activation of mitochondrial permeability transition pore opening via calcium overload and reactive oxygen species for cancer therapy

Ying Zhou et al.

Summary: In this study, a mitochondrial pathway was established to inhibit tumor growth through the double activation of the mitochondrial permeability transition pore (MPTP) channel. Fe2+ doped covalent organic frameworks (COF) were synthesized and used as templates to grow a CaCO3 shell, resulting in the formation of O-2-FeCOF@CaCO3 nanocomposite. After modification with folic acid (FA), the nanocomposite (OFCCF) could target breast cancer cells and achieve synergistic treatment through photodynamic therapy (PDT) and calcium overload. The multifunctional nanosystem with tumor microenvironment (TME) response abilities provided a novel strategy for clinical cancer therapy.

JOURNAL OF NANOBIOTECHNOLOGY (2022)

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Review Nanoscience & Nanotechnology

Biomaterial-based antimicrobial therapies for the treatment of bacterial infections

Pranav P. Kalelkar et al.

Summary: This review discusses the use of antibacterial biomaterials and non-antibiotic therapies to improve the ability to combat antibiotic resistance and recurring infections. Utilizing biomaterials allows for targeted delivery of multiple agents while reducing systemic adverse effects, showing great potential for future development.

NATURE REVIEWS MATERIALS (2022)

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Review Chemistry, Multidisciplinary

Nanopores of a Covalent Organic Framework: A Customizable Vessel for Organocatalysis

Debanjan Chakraborty et al.

Summary: Polymers with ordered nanochannels, known as COFs, can be used as heterogeneous catalysts. By anchoring or dispersing catalytic sites into the nanospaces offered by COF pores, high catalyst density, facile active-site access, and easy separation can be achieved. COFs can also alter the electronics of inorganic catalytic sites through their framework, acting as both a passive support and an active support for catalytic reactions.

ACS OMEGA (2022)

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Article Chemistry, Multidisciplinary

Hafnium-Based Metal-Organic Framework Nanoparticles as a Radiosensitizer to Improve Radiotherapy Efficacy in Esophageal Cancer

Wei Zhou et al.

Summary: This study demonstrates a simple method for synthesizing UiO-66-NH2(Hf) metal-organic framework nanoparticles as radiosensitizers for radiotherapy. The nanoparticles have a stable structure and enhanced X-ray absorption, making them a promising option for esophageal cancer radiotherapy.

ACS OMEGA (2022)

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Article Chemistry, Multidisciplinary

Tetrazole-functionalized two-dimensional covalent organic frameworks coordinated with metal ions for electrocatalytic oxygen evolution reaction

Ying Liang et al.

Summary: A novel and convenient tactic was developed to design and fabricate tetrazole-functionalized covalent organic framework (COF) materials with abundant nitrogen atoms. The materials showed great promise for application in electrocatalysis with enhanced activity.

MATERIALS TODAY CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Construction of novel benzoxazine-linked covalent organic framework with antimicrobial activity via postsynthetic cyclization

Q. Ma et al.

Summary: In this study, a new hydroxyl-containing imine-linked COF was converted into a benzoxazine-linked COF with improved antibacterial activity through a cyclization reaction. The efficiency of COF against Escherichia coli and Staphylococcus aureus was over 90%, while maintaining crystal and pore structure for drug delivery and release functions. Post-synthetic modifications have significant potential to enhance the properties and applications of COFs.

MATERIALS TODAY CHEMISTRY (2022)

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Article Engineering, Environmental

Synthesis of covalent organic frameworks via Kabachnik-Fields reaction for water treatment

Wen-Xiu Wu et al.

Summary: Providing safe and clean domestic water is a global issue, and heavy metal ions and pathogens are the main pollutants. This research introduces a multifunctional material, APCOF-1, and demonstrates its potential for water treatment.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Chemistry, Physical

Ferric acetylacetonate/covalent organic framework composite for high performance photocatalytic oxidation

Mingzhao Xu et al.

Summary: In this study, the Fe(acac)(3)/COF composite was synthesized using an interfacial polymerization method at room temperature. The crystal structure, morphology, and porosity property of the composite were characterized, and the interaction between Fe(acac)3 and COF was investigated. The Fe(acac)(3)/COF composite exhibited high activity and selectivity as a photocatalyst for the oxidation of benzyl alcohol under mild conditions. The mechanism of the reaction was investigated by determining its photoelectric properties. The developed Fe(acac)(3)/COF catalyst shows potential for application in other photocatalytic reactions.

GREEN ENERGY & ENVIRONMENT (2022)

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Article Chemistry, Physical

Electrocatalytic carbon dioxide reduction in acid

Junnan Li et al.

Summary: The conversion of CO2 driven by renewable energy is an important way to generate carbon-based fuels and chemicals for a sustainable society. Although most CO2 reduction (CO2R) processes are carried out in alkaline electrolyte, this often leads to spontaneous formation of carbonates, resulting in low energy balance and CO2 utilization rate. Operating in acid conditions can alleviate these issues, but achieving selective CO2R in the presence of high proton concentrations has been a challenge. Recent studies have made progress in demonstrating the potential of CO2R in acid environments. Future research should address the remaining key questions to make acid-based CO2R practical.

CHEM CATALYSIS (2022)

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Review Chemistry, Physical

Principles and applications of photothermal catalysis

Chuqiao Song et al.

Summary: This review provides an overview of the research progress and applications of photothermal catalysis. The mechanisms of photothermal effects and the functioning principles of photothermal catalysis are discussed. Photothermal catalysts are categorized into three types based on their coupling modes of thermochemical and photochemical pathways. Catalyst design strategies and characterization methods for photothermal catalysis are illustrated. Recent research progress on photothermal catalytic reactions for CO2 conversion, CH4 activation, NH3 synthesis, and water splitting are summarized. Challenges and perspectives in this field are presented as a guide for future development in photothermal catalysis.

CHEM CATALYSIS (2022)

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Review Environmental Sciences

Manipulating Excitonic Effects in Layered Bismuth Oxyhalides for Photocatalysis

Yanbiao Shi et al.

Summary: Two-dimensional semiconductors have the potential to harness solar energy for environmental mitigation and fuel synthesis, but their photocatalytic properties are significantly influenced by excitonic effects. Bismuth oxyhalides serve as an excellent platform for studying excitonic effects and can generate singlet oxygen through exciton dissociation and energy transfer.

ACS ES&T WATER (2022)

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Article Chemistry, Multidisciplinary

An electrochemical sensor for sensitive detection of dopamine based on a COF/Pt/MWCNT-COOH nanocomposite

Sinuo Feng et al.

Summary: In this study, an electrochemical sensor was developed for sensitive detection of dopamine using a novel COF-based nanocomposite called COF/Pt/MWCNT-COOH. The nanocomposite possesses a large specific surface area, excellent electrical conductivity, and high catalytic activity, thus expanding the application of COFs in the field of electrochemical sensing.

CHEMICAL COMMUNICATIONS (2022)

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Review Materials Science, Multidisciplinary

Research progress on metal and covalent organic framework-based materials for high-performance supercapacitors

Shuai Wang et al.

Summary: Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) are a type of crystalline porous materials, which have been widely studied for their potential applications in energy storage devices. This review summarizes the recent research progress on the design of MOFs and COFs, their hybrids with conductive materials, and MOF- and COF-derived carbon materials. The chemical and physical properties, capacitive performance, and structure-property relationships are discussed. The challenges and prospects of MOF- and COF-based electrode materials are also presented.

NEW CARBON MATERIALS (2022)

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Article Chemistry, Multidisciplinary

A covalent organic framework with a self-contained light source for photodynamic therapy

Wen-Xiu Ren et al.

Summary: External light-independent antitumor photodynamic therapy has been successfully achieved using a covalent organic framework (COF)-based host-guest nanosystem. Its highly effective antitumor behavior is fully demonstrated in both H2O2-overexpressed 4T1 and H2O2-less expressed HCT116 and MCF-7 xenograft models.

CHEMICAL COMMUNICATIONS (2022)

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Article Chemistry, Multidisciplinary

Revealing the structure-activity relationship in woven covalent organic frameworks for the electrocatalytic oxygen reduction reaction

Jiawen Li et al.

Summary: This study explores the role of metal centers and linkages in catalytic activity by utilizing COF-112 as a catalyst. The findings highlight the importance of the imine linkage in the ORR and reveal the structure-activity relationship of woven COFs.

NANOSCALE (2022)

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Article Materials Science, Multidisciplinary

In Situ Synthesis of Lead-Free Halide Perovskite-COF Nanocomposites as Photocatalysts for Photoinduced Polymerization in Both Organic and Aqueous Phases

Yifan Zhu et al.

Summary: The instability of perovskite materials towards water and light is a critical challenge in their application. In this study, lead-free bismuth halide perovskite nanocrystals were encapsulated in covalent organic frameworks (PNCs-COFs) using an in situ growth approach. The resulting PNCs-COFs nanocomposites exhibited good water processability and photocatalytic performance.

ACS MATERIALS LETTERS (2022)

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Article Chemistry, Multidisciplinary

Tunable covalent organic framework electrochemiluminescence from non-electroluminescent monomers

Wei-Rong Cui et al.

Summary: The conjugated organic frameworks with trithiophene (BTT-COFs) have been found to have high ECL efficiencies even without exogenous co-reactants. Substituting the monomers with different properties allows for modulation of ECL performance. The cyano group in the framework provides sites for post-functionalization.

CELL REPORTS PHYSICAL SCIENCE (2022)

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Review Chemistry, Physical

Modified Metal-Organic Frameworks for Electrochemical Applications

Kefan Chen et al.

Summary: This review presents the characteristics and advantages of metal-organic frameworks (MOFs), as well as the synthesis, structure characterization, and electrochemical application of modified MOFs. Furthermore, it discusses the challenges and application prospects of modified MOFs in energy storage and conversion.

SMALL STRUCTURES (2022)

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Review Chemistry, Multidisciplinary

Electrically conductive 2D covalent organic frameworks

Yuhao Zhu et al.

Summary: Two-dimensional covalent organic frameworks (2D COFs) offer unique charge carrier transport pathways and remarkable electronic properties. Precise alignment of electron-rich and/or electron-deficient aromatic arenes enables high conductivity and mobility.

TRENDS IN CHEMISTRY (2022)

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Review Materials Science, Multidisciplinary

Covalent organic frameworks: Design and applications in electrochemical energy storage devices

Shikai Jin et al.

Summary: Covalent organic frameworks (COFs) possess uniform porosity, versatile functionality, and precise control over structures, as well as reversible redox activity. They have attracted great attention for applications in electrochemical energy storage devices, and various design strategies have been proposed to enhance their electrochemical properties.

INFOMAT (2022)

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Review Chemistry, Multidisciplinary

Electroactive covalent organic frameworks: a new choice for organic electronics

Yizhou Yang et al.

Summary: Covalent organic frameworks (COFs) with covalent bond-supported crystallinity and high encapsulating ability have been widely utilized in organic electronics as conductive or semiconductive components for electronic devices like organic photodetectors, photovoltaics, transistors, light-emitting devices, sensors, and memory devices. General tactics to provide electroactive functionalities are also discussed, offering open considerations and inspiration for future electronic design.

TRENDS IN CHEMISTRY (2022)

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Review Nanoscience & Nanotechnology

Characteristic Synthesis of a Covalent Organic Framework and Its Application in Multifunctional Tumor Therapy

Shengnan Zhou et al.

Summary: Covalent organic frameworks (COFs) have unique properties that make them attractive for biomedical applications, such as easy synthesis, porosity, and adjustable biocompatibility. This review summarizes the latest developments of COFs in the biomedical field, focusing on their use in cancer diagnosis and treatment, specific preparation methods, and challenges and prospects in applying COFs to clinical transformation.

ACS APPLIED BIO MATERIALS (2022)

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Article Pharmacology & Pharmacy

Construction of Nanoscale Covalent Organic Frameworks via Photocatalysis-Involved Cascade Reactions for Tumor-Selective Treatment

Qun Guan et al.

Summary: A method for constructing imine-linked COFs through photocatalytic oxidation and imine condensation steps is reported, which can be easily scaled up and results in uniform particle size COFs suitable for biomedical applications. The concept of photocatalytic-cascade COF synthesis enriches the nanoscale COF synthetic methodology.

ADVANCED THERAPEUTICS (2022)

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Article Nanoscience & Nanotechnology

Self-Exfoliating Double-Emission N-Doped Carbon Dots in Covalent Organic Frameworks for Ratiometric Fluorescence Off-On Cu2+ Detection

Shiqi Wang et al.

Summary: This research successfully prepared nitrogen-doped carbon dots encapsulated COFTAPT-TT through a one-pot method, in which NCDs led spherical stacked COFTAPT-TT to self-exfoliate into NCCOFTAPT-TT nanosheets, greatly improving its dispersion and stability. In the presence of copper ions (0-10.0 μM), the fluorescence of NCDs was quenched while the fluorescence of COFTAPT-TT remained unchanged, realizing a Cu2+ off-on ratiometric fluorescent sensor.

ACS APPLIED NANO MATERIALS (2022)

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Article Chemistry, Multidisciplinary

An Imine-Linked Metal-Organic Framework as a Reactive Oxygen Species Generator

Xiaomin Li et al.

Summary: A new metal-organic framework (MOF) with both coordination and covalent linkages has been prepared, demonstrating high efficiency in decomposing H2O2 and exciting O-2 to generate reactive oxygen species, showing effective photosensitizing activity.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

A Carboxyl-Functionalized Covalent Organic Framework Synthesized in a Deep Eutectic Solvent for Dye Adsorption

Bin Dong et al.

Summary: A novel carboxyl-functionalized COF (TpPa-COOH) was successfully synthesized using a deep eutectic solvent (Bu4NBr/Im), showing excellent selective adsorption performance for methylene blue and safranine T. The adsorption isotherms of TpPa-COOH for the dyes were well modeled using a Langmuir isotherm, with a higher adsorption capacity observed for safranine T compared to methylene blue. These results could provide guidance for the green synthesis of adsorbents for wastewater treatment.

CHEMISTRY-A EUROPEAN JOURNAL (2021)

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Article Nanoscience & Nanotechnology

Palladium Nanoparticles on Covalent Organic Framework Supports as Catalysts for Suzuki-Miyaura Cross-Coupling Reactions

Jianguo Liu et al.

Summary: A novel COFs-supported nanoparticles Pd catalyst for region-selective SMC reaction of aryl boronic acids and aryl halides, especially with halogenated aryl boronic acids, was reported. The methodology offers mild operating conditions, broad functional group tolerance, and environmental friendliness, and the catalysts are stable and reusable. The precise regulation of nanoparticles Pd activity with the well-designed COF ligand is the most outstanding advantage.

ACS APPLIED NANO MATERIALS (2021)

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Article Chemistry, Multidisciplinary

2D covalent organic framework: a photoactive heterogeneous catalyst for chemical fixation of CO2 over propargyl amines in water under sunlight

P. Sarkar et al.

Summary: The efficient synthesis of Pd(II)-based COF for photocatalytic fixation of CO2 to prepare oxazolidinone has been demonstrated. The material exhibits low bandgap energy and high photocatalytic activity, achieving a high turnover number under sunlight in catalytic cycles. The catalyst shows efficient reusability and minimal metal leaching during reaction cycles, providing a new environmentally friendly pathway for oxazolidinone synthesis.

MATERIALS TODAY CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Single-Pore versus Dual-Pore Bipyridine-Based Covalent-Organic Frameworks: An Insight into the Heterogeneous Catalytic Activity for Selective C-H Functionalization

Harsh Vardhan et al.

Summary: The exponential growth in the field of covalent-organic frameworks (COFs) is attributed to the direct correlation between designing principles and desired properties. The comparison of catalytic activity between single-pore and dual-pore COFs is crucial for establishing a structure-function relationship. By synthesizing imine-linked dual-pore COFs with controllable bipyridine content, this study demonstrates efficient catalytic active sites for selective functionalization of sp(2)C-H bonds to C-X (X = Br, Cl) or C-O bonds. The comparison between palladium decorated dual-pore frameworks and single-pore imine-linked Pd(II) @ Py-2,2'-BPyDC framework provides insights into the relationship between catalytic activity and core properties of rationally designed frameworks.

SMALL (2021)

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Article Chemistry, Multidisciplinary

Copper (I)-Organic Frameworks for Catalysis: Networking Metal Clusters with Dynamic Covalent Chemistry

Rong-Jia Wei et al.

Summary: Metal cluster-based MOFs offer great potential for diverse applications, with JNM-1 and JNM-2 standing out as efficient catalysts for recyclable palladium-free Sonogashira coupling reactions. Their unique structures and dynamic covalent chemistry make them promising materials for future research and development.

CCS CHEMISTRY (2021)

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Article Materials Science, Multidisciplinary

A covalent organic framework-based multifunctional therapeutic platform for enhanced photodynamic therapy via catalytic cascade reactions

Lihan Cai et al.

Summary: Utilizing COFs as a template, Au nanoparticles grown on the surface, coated with MnO2, and introducing HA, the COF-Au-MnO2 product can perform cascade reactions in the tumor microenvironment, demonstrating excellent cancer cell killing effects and antitumor efficacy via a cycle-like process.

SCIENCE CHINA-MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Layered Copper-Metallated Covalent Organic Frameworks for Huisgen Reactions

Ignacio Romero-Muniz et al.

Summary: Copper-metallated COF materials were synthesized through modification with catalytic copper sites, resulting in efficient heterogeneous catalysts. These materials showed high yields and recyclability in 1,3-dipolar cycloaddition reactions.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Arousing Electrochemiluminescence Out of Non-Electroluminescent Monomers within Covalent Organic Frameworks

Ya-Jie Li et al.

Summary: A new design strategy was reported for an ECL-emitting COF family, which allows non-ECL molecules to activate tunable ECL with a maximum efficiency of 32.1% in water with dissolved oxygen as an inner co-reactant, without the need for additional noxious co-reactants. This work demonstrates the potential for broad application of ECL-COFs in various biosensors and light-emitting displays.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Non-noble Nickel-Modified Covalent Organic Framework for Partial Hydrogenation of Aromatic Terminal Alkynes

Nan Wang et al.

Summary: In this study, a non-noble nickel-modified covalent organic framework catalyst was successfully synthesized and showed excellent performance in the semihydrogenation of phenylacetylene under mild reaction conditions. The catalyst exhibited high selectivity and good stability, making it a promising candidate for selective hydrogenation reactions.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

In Situ Fabrication of Porous MOF/COF Hybrid Photocatalysts for Visible-Light-Driven Hydrogen Evolution

Ping Xue et al.

Summary: This study successfully prepared a series of Cu-3 (HHTP)(2)-MOF/Tp-Pa-1-COF hybrids and demonstrated superior photocatalytic performance, achieving efficient hydrogen evolution under visible light irradiation by promoting charge transfer effectively and inhibiting recombination of photogenerated electron-hole pairs.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Cobalt Coordinated Cyano Covalent-Organic Framework for High-Performance Potassium-Organic Batteries

Lu Zhao et al.

Summary: The COF-Co material, as an organic electrode for potassium ion batteries, shows enhanced cycling stability and good rate properties due to its enhanced pi-pi accumulation and abundant defects, as well as the promotion of pi-K+ interaction and shortened diffusion distance of ion/electron.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Reprogramming of Neutrophils as Non-canonical Antigen Presenting Cells by Radiotherapy-Radiodynamic Therapy to Facilitate Immune-Mediated Tumor Regression

Nining Guo et al.

Summary: By activating neutrophils in the tumor microenvironment with low-dose X-rays through nMOFs, RT-RDT reshapes the favorable tumor microenvironment for antitumor immune responses, inducing effective cross-presentation of tumor antigens and generating robust adaptive immune responses.

ACS NANO (2021)

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Article Chemistry, Multidisciplinary

Towards High Performance Li-S Batteries via Sulfonate-Rich COF-Modified Separator

Jie Xu et al.

Summary: A sulfonate-rich COF (SCOF-2) was designed, synthesized, and used to modify the separator of Li-S batteries, leading to enhanced Li+ migration, reduced Li-dendrite formation, and improved battery performance. The modified batteries showed low attenuation rate and excellent anti-self-discharge performance, even with high-sulfur-loading cathodes and lean electrolytes, indicating great potential for practical application.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Controllable Synthesis of COFs-Based Multicomponent Nanocomposites from Core-Shell to Yolk-Shell and Hollow-Sphere Structure for Artificial Photosynthesis

Mi Zhang et al.

Summary: In this study, a strategy called metal organic framework-sacrificed in situ acid-etching (MSISAE) was developed for the continuous synthesis of COF-based nanocomposites, including core-shell, yolk-shell, and hollow-sphere structures. One of the obtained samples with special three components showed high photocatalytic CO2-to-CO conversion efficiency in the gas-solid mode. This strategy allows for precise morphology design and control of multicomponent hybrid composites based on COFs, potentially leading to the development of porous crystalline materials with powerful superstructures for multifunctional catalytic reactions.

ADVANCED MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Novel One-Dimensional Covalent Organic Framework as a H+ Fluorescent Sensor in Acidic Aqueous Solution

Ziao Chen et al.

Summary: A new COF material with a rare one-dimensional structure was developed in this study, showing good crystallinity, thermal stability, and high surface area. Additionally, it exhibited strong fluorescence and potential as an excellent H+ sensor in acidic aqueous solutions.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Pt(II)-Decorated Covalent Organic Framework for Photocatalytic Difluoroalkylation and Oxidative Cyclization Reactions

Zainab Almansaf et al.

Summary: A new COF based on imine bonds with dual-pore structure and high crystallinity was successfully synthesized, and selectively metallated with Pt on the N donor in the larger pores. The metallated COF showed excellent performance as a recyclable heterogeneous photocatalyst for decarboxylative difluoroalkylation and oxidative cyclization reactions.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Highly Efficient Silver Catalyst Supported by a Spherical Covalent Organic Framework for the Continuous Reduction of 4-Nitrophenol

Ning Wang et al.

Summary: Developing new materials and novel technologies for the highly efficient treatment of toxic organic pollutants is highly desirable. A method based on a spherical covalent organic framework (SCOF) for catalytic reduction has been designed, showing high catalytic reduction ability towards 4-nitrophenol (4-NP) and far superior performance compared to previous reported results.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Analytical

Covalent Organic Frameworks as Advanced Uranyl Electrochemiluminescence Monitoring Platforms

Wei-Rong Cui et al.

Summary: ECL technology controls the generation of excited states by changing the potential, improving system efficiency, but the use of toxic coreactants can affect the accurate analysis of trace targets. New ECL-COFs structures enable ECL of non-emitting molecules, with high efficiency suitable for analyzing complex environmental samples.

ANALYTICAL CHEMISTRY (2021)

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Article Chemistry, Analytical

Electrochemical Immunosensor for Cardiac Troponin I Detection Based on Covalent Organic Framework and Enzyme-Catalyzed Signal Amplification

Sinuo Feng et al.

Summary: A highly sensitive electrochemical immunosensor for cardiac troponin I (cTnI) determination was developed using a multifunctional covalent organic framework-based nanocomposite as the signal amplification probe. The system showed improved sensitivity through signal amplification and exhibited excellent performance in actual sample testing.

ANALYTICAL CHEMISTRY (2021)

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Review Pharmacology & Pharmacy

Targeting drug delivery with light: A highly focused approach

Teresa L. Rapp et al.

Summary: This article discusses the unique power of light as a tool for controlling molecular events in biology and highlights recent innovations in photosensitive drug delivery. It also points out future opportunities to engineer and exploit light-responsive technologies in the clinical setting.

ADVANCED DRUG DELIVERY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Nanostructured Metal Sulfides: Classification, Modification Strategy, and Solar-Driven CO2 Reduction Application

Jingjing Wang et al.

Summary: This review discusses the recent progress on metal sulfide semiconductors as photocatalysts for CO2 reduction, including classification of catalysts based on elemental composition and demonstration of crystal structures, photochemical characteristics, and applications. It also summarizes various modification strategies to enhance the activity and selectivity of photocatalytic CO2 reduction on these metal sulfides, and proposes future directions for the development of metal sulfide photocatalysts for CO2 reduction.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Chemical Conversion and Locking of the Imine Linkage: Enhancing the Functionality of Covalent Organic Frameworks

Luca Cusin et al.

Summary: Imine-based COFs are functional, crystalline, and porous nanostructures with relatively easy crystallization, but the stability of the imine bond is limited, making it unsuitable for harsh conditions. Solutions are needed to increase the potential of these materials, potentially through chemical conversion and locking of the imine bond to enhance framework robustness and functionality.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Nature-Inspired Construction of MOF@COF Nanozyme with Active Sites in Tailored Microenvironment and Pseudopodia-Like Surface for Enhanced Bacterial Inhibition

Lu Zhang et al.

Summary: The study presents a high-efficiency peroxidase mimic MOF@COF nanozyme, utilizing the interaction between MOFs and COFs to achieve enhanced bacterial inhibition.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Polymorphism of 2D Imine Covalent Organic Frameworks

Yusen Li et al.

Summary: The study designed and synthesized different isomeric tetraphenyl benzene monomers to construct various frameworks by changing reaction solvents. The geometry of monomers was found to influence lattice growth process, with the frameworks exhibiting highly selective adsorption of vitamin B-12.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Luminescent Ratiometric Thermometers Based on a 4f-3d Grafted Covalent Organic Framework to Locally Measure Temperature Gradients During Catalytic Reactions

Anna M. Kaczmarek et al.

Summary: COFs co-grafted with lanthanide ions and Cu2+ can be used as both a nanothermometer and catalyst. The performance of the thermometer can be tuned by changing the grafted d-metal and solvent environment. This concept could potentially be extended to other catalytic reactions by grafting other d-metal ions on the Ln@COF platform.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Rational Fabrication of Crystalline Smart Materials for Rapid Detection and Efficient Removal of Ozone

Dong Yan et al.

Summary: In this study, imine-based COFs were developed for efficient and rapid sensing and removal of ozone. These materials work under broad working conditions and can effectively reduce ozone concentration below the recommended safety limit. The mechanism behind the performance of imine-based COFs was thoroughly investigated, offering a new type of advanced material for ozone sensing and removal with broad application scope.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Stable Dioxin-Linked Metallophthalocyanine Covalent Organic Frameworks (COFs) as Photo-Coupled Electrocatalysts for CO2 Reduction

Meng Lu et al.

Summary: This study designed a series of stable metallophthalocyanine COFs as novel single-site catalysts with outstanding activity and selectivity for electrocatalytic CO2 reduction. Coupled with light, these COFs showed improved efficiency and potential for applications in the field of electrocatalysis.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Rational design of covalent organic frameworks as a groundbreaking uranium capture platform through three synergistic mechanisms

Wei-Rong Cui et al.

Summary: This study presents a method using covalent organic framework for the selective capture and reduction of uranium, achieving a high uranium capture capacity. DHBD-TMT shows efficient uranium adsorption in both dark and light conditions, with excellent photocatalytic activity.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Engineering, Environmental

Covalent organic framework nanorods bearing single Cu sites for efficient photocatalysis

Zhiyue Dong et al.

Summary: By rationally designing novel Cu-coordinated COF nanostructures, this research has achieved efficient visible light absorption, complete electrons-holes separation, and enrichment of toxic organic compounds. The COF-909(Cu) nanorods demonstrated excellent performance in photocatalytic degradation, surpassing current state-of-the-art photocatalysts. Density functional theory calculations confirmed the structure-function relationship between the single Cu sites and the separation of electrons-holes, as well as the strong binding sites for target molecules.

CHEMICAL ENGINEERING JOURNAL (2021)

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Review Chemistry, Multidisciplinary

Covalent Organic Frameworks for Sunlight-driven Hydrogen Evolution

Xiaofeng Huang et al.

Summary: The energy crisis is currently being met with a potential rise in hydrogen technology, which requires sophisticated structural design of water-splitting photocatalysts for efficient hydrogen production. The use of covalent organic frameworks (COFs) as porous crystalline materials shows promise in tuning the photocalytic performance, with future research focusing on the mechanistic aspects of COFs in photocatalysis.

CHEMISTRY LETTERS (2021)

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Article Chemistry, Physical

New Covalent Organic Square Lattice Based on Porphyrin and Tetraphenyl Ethylene Building Blocks toward High-Performance Supercapacitive Energy Storage

Bidhan Chandra Patra et al.

Summary: Covalent organic frameworks (COFs) have attracted increasing interest in materials science due to their periodic structure and regular pores that provide effective ion transport and storage properties. The porphyrin-based 2D COF, prepared through Schiff base condensation reaction, exhibited high crystallinity and large surface area, showing excellent performance as a supercapacitor for energy storage applications.

CHEMISTRY OF MATERIALS (2021)

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Article Chemistry, Physical

Three-Dimensional Covalent Organic Frameworks with hea Topology

Zonglong Li et al.

Summary: 3D covalent organic frameworks (COFs) are a new type of crystalline organic porous material with great potential in gas storage applications. This study reports a novel 3D COF topology, expanding the family of 3D COFs and providing new possibilities for efficient gas storage material design. The synthesized 3D-hea-COFs exhibit excellent adsorption performance for H-2, CO2, and CH4, attributed to their complex pore structures and fully exposed active sites.

CHEMISTRY OF MATERIALS (2021)

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Review Chemistry, Physical

Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waals Heterojunctions

Pawan Kumar et al.

Summary: The scientific community is exploring sustainable pathways that are economically feasible and environmentally compelling, one of which involves utilizing semiconductor materials to drive photoredox reactions. By constructing a two-dimensional heterojunction, enhanced charge separation and improved visible photon absorption can be achieved, leading to higher performance in photocatalysis.

CHEMISTRY OF MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Crystalline Covalent Organic Frameworks with Tailored Linkages for Photocatalytic H2 Evolution

Shuhong Wu et al.

Summary: This Minireview introduces state-of-the-art COF photocatalysts based on different linkages and discusses the origin of photocatalytic activities for hydrogen evolution. It focuses on advancements in synthetic methodologies, structural design, and photoelectronic properties relevant to photocatalytic performance of three typical COF photocatalysts with different linkages (-C=N-, O=C-C=C-NH-, and -C=C-). The review is expected to elucidate structure-property relationships and provide insights for designing photoactive COFs with enhanced performances.

CHEMSUSCHEM (2021)

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Review Chemistry, Inorganic & Nuclear

The emerging covalent organic frameworks (COFs) for solar-driven fuels production

Changlei Xia et al.

Summary: COFs have emerged as potential materials for solar fuel production, offering solutions to issues such as poor light absorption, fast photogenerated electron-hole recombination, and inappropriate active sites. This review investigates the development of COFs for producing hydrogen, carbon dioxide reduction, and dinitrogen fixation, highlighting current limitations in the field of photocatalysis.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Chemistry, Applied

Covalent organic framework as an efficient fluorescence-enhanced probe to detect aluminum ion

Yu Xiang et al.

Summary: The fluorescence of p-methoxyl group-substituted imine-based COFs can be dramatically enhanced after coordination with Al3+, while o-methoxyl group-substituted COF does not exhibit this phenomenon, possibly due to the rotation of uncoordinated C--N and C-O bonds on one side.

DYES AND PIGMENTS (2021)

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Article Chemistry, Applied

Novel water-dispersible lanthanide-grafted covalent organic framework nanoplates for luminescent levofloxacin sensing and visual pH detection

Lu Yang et al.

Summary: A novel luminescent sensor for LVFX and pH values, with high selectivity and sensitivity, has been developed. The design of a test strip allows for rapid on-site pH measurement. This study not only introduces a new type of sensor, but also opens up new pathways for the design of waterdispersible luminescent materials.

DYES AND PIGMENTS (2021)

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Article Chemistry, Multidisciplinary

Crystalline C-C and C=C Bond-Linked Chiral Covalent Organic Frameworks

Chen Yuan et al.

Summary: This study demonstrates that C-C single bond-based COFs can be prepared by direct reduction of C=C bond-linked frameworks, resulting in frameworks with high crystallinity, porosity, and chemical stability. The method involves crystal-to-crystal transformation and has the potential to produce chemically functionalized COFs with new linkages that are otherwise difficult to obtain.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Three-Dimensional Covalent Organic Framework with ceq Topology

Zonglong Li et al.

Summary: Three-dimensional covalent organic frameworks (3D-COFs) are designable porous materials with unique structural characteristics and porous features. This study introduces a new 3D-COF with the ceq topology, utilizing a D-3h-symmetric triangular prism vertex and a planar triangular linker. The as-synthesized COF shows a twofold-interpenetrated structure with a Brunauer-Emmett-Teller surface area of 1148.6 m(2) g(-1) and efficient absorption of CO2, CH4, and H2. This work provides new building units and approaches for further exploration of 3D-COFs.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

A Crystalline Three-Dimensional Covalent Organic Framework with Flexible Building Blocks

Xiaoling Liu et al.

Summary: By incorporating flexible building blocks into the construction of 3D COFs, interesting breathing behavior can be achieved, and smart materials with reversible shape transformation properties can be fabricated.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Polycrystalline Covalent Organic Framework Films Act as Adsorbents, Not Membranes

Julie L. Fenton et al.

Summary: Covalent organic framework (COF) membranes function as adsorbents rather than size-sieving membranes. Adsorption of various dyes by COFs shows high capacity and diverse affinities, driven by variable entropic gains. Further examination of the COF membrane literature is necessary, as separations based on differential transport through 2D COF pores remain an important yet unrealized frontier.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Low Band Gap Benzoxazole-Linked Covalent Organic Frameworks for Photo-Enhanced Targeted Uranium Recovery

Wei-Rong Cui et al.

Summary: A series of robust and hydrophilic benzoxazole-based COFs have been developed as efficient adsorbents for targeted uranium recovery from seawater with improved stability, chemical reduction properties, and high uranium adsorption capacity compared to interfering metals like vanadium.

SMALL (2021)

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Review Chemistry, Multidisciplinary

2D Redox-Active Covalent Organic Frameworks for Supercapacitors: Design, Synthesis, and Challenges

Miao Li et al.

Summary: COFs, with tunable skeletons and variable pore environments, serve as a versatile platform for tailoring redox activities in efficient energy storage, particularly showing representative advances in supercapacitors.

SMALL (2021)

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Article Multidisciplinary Sciences

MOF-in-COF molecular sieving membrane for selective hydrogen separation

Hongwei Fan et al.

Summary: COFs are promising for separation membranes, but MOF-in-COF membranes show significant enhancement in hydrogen selectivity over other gases.

NATURE COMMUNICATIONS (2021)

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Review Engineering, Biomedical

Covalent Organic Frameworks for Biomedical Applications

Arezoo Esrafili et al.

Summary: Covalent organic frameworks (COFs) are porous organic polymeric materials with desirable properties like high stability, low density, and large surface area, making them suitable for applications in the energy sector and drug delivery. This review discusses different types of COFs, synthesis methods, and their potential applications in the biomedical field, highlighting the specific advantages that can be utilized for specialized biomedical applications such as immune engineering.

ADVANCED HEALTHCARE MATERIALS (2021)

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Article Engineering, Biomedical

Synergistic Antibacterial and Anti-Inflammatory Effects of a Drug-Loaded Self-Standing Porphyrin-COF Membrane for Efficient Skin Wound Healing

Luo-Gang Ding et al.

Summary: The study introduced a IBU@DhaTph-membrane with effective antibacterial and anti-inflammatory effects through light-induced singlet oxygen generation and controlled IBU release. Both in vitro and in vivo experiments demonstrated its significant therapeutic effects on chronic wounds.

ADVANCED HEALTHCARE MATERIALS (2021)

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Review Engineering, Biomedical

Noble Metal Nanomaterials for NIR-Triggered Photothermal Therapy in Cancer

Zhuoqian Lv et al.

Summary: Developing anticancer therapeutic agents or technologies with high specificity, patient compliance, and low toxicity is important. Noble metal nanomaterials present strong potential for cancer treatment through photothermal therapy, with the ability to achieve multifunctional cancer therapy when combined with various functional reagents.

ADVANCED HEALTHCARE MATERIALS (2021)

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Review Engineering, Biomedical

Stimuli-Responsive Iron Oxide Nanotheranostics: A Versatile and Powerful Approach for Cancer Therapy

Morgan E. Lorkowski et al.

Summary: Recent advancements have emphasized the importance of a holistic approach in cancer treatment, with iron oxide nanoparticles showing promise in seeking, sensing, and attacking solid tumors. These nanoparticles can be integrated with various stimulus mechanisms for the development of effective cancer therapy, co-delivering potent anticancer therapeutics and immune modulators. Future directions for clinical translation are also considered.

ADVANCED HEALTHCARE MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Single Metal Site and Versatile Transfer Channel Merged into Covalent Organic Frameworks Facilitate High-Performance Li-CO2 Batteries

Yu Zhang et al.

Summary: The unique TTCOF-Mn catalyst demonstrates excellent performance in Li-CO2 batteries, with low overpotential and high stability. Density functional theory calculations reveal the importance of single metal sites for CO2 conversion. This is the first example to reveal the catalytic active sites and clear reaction pathways in aprotic Li-CO2 batteries.

ACS CENTRAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Three-Dimensional Covalent-Organic Frameworks Loaded with Highly Dispersed Ultrafine Palladium Nanoparticles as Efficient Heterogeneous Catalyst

Qingzhu Sun et al.

Summary: In this study, a 3D COF (TPM-3D-COF-BPY) was successfully utilized as a support for loading Pd to form a catalyst with unique channel structure and efficient catalytic performance.

CHEMNANOMAT (2021)

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Article Chemistry, Physical

Copper(I)-modified covalent organic framework for CO2 insertion to terminal alkynes

Ran Bu et al.

Summary: The study developed a TpBpy-supported Cu(I) catalyst that can efficiently catalyze the conversion of CO2 and terminal alkynes to propiolic acids. The catalytic activity arises from the synergy between the organic framework of TpBpy and the Cu(I) sites, with the organic framework also possessing its own catalytic activity.

MOLECULAR CATALYSIS (2021)

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Article Chemistry, Physical

Recent progress in covalent organic frameworks as light-emitting materials

S. Xu et al.

Summary: COFs, as an emerging class of crystalline materials, have attracted attention due to their lightweight and highly ordered porous structure. Conjugated COFs, compared to one-dimensional conjugated polymers, can extend conjugation in two- or even three-dimensional directions, making them promising candidates for light-emitting materials.

MATERIALS TODAY ENERGY (2021)

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Article Nanoscience & Nanotechnology

Unprecedented Application of Covalent Organic Frameworks for Polymerization Catalysis: Rh/TPB-DMTP-COF in Polymerization of Phenylacetylene and Its Functional Derivatives

Qingbin Cao et al.

Summary: In this study, the new application of COFs in polymerization catalysis was reported, where Rh catalysts were incorporated into COFs to create a series of catalysts with varying Rh contents. These catalysts showed both high activity and selectivity, as well as stability and recyclability, with the ability to be reused multiple times.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Physical

Molybdenum Atom-Mediated Salphen-Based Covalent Organic Framework as a Promising Electrocatalyst for the Nitrogen Reduction Reaction: A First-Principles Study

Biswajit Ball et al.

Summary: Mo-salphenCOF shows excellent thermodynamic and electrochemical stability as an electrocatalyst for NRR, with outstanding activity and selectivity in the reaction.

JOURNAL OF PHYSICAL CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

A Visible-Light-Harvesting Covalent Organic Framework Bearing Single Nickel Sites as a Highly Efficient Sulfur-Carbon Cross-Coupling Dual Catalyst

Hui Chen et al.

Summary: This study explores a new COF material that combines photosensitivity and nickel catalytic activity to form a dual-functional catalyst. The catalyst shows excellent catalytic performance in the visible-light-driven catalytic sulfur-carbon cross-coupling reaction. This research demonstrates for the first time the use of a photosensitive COF scaffold and single transition metal sites as a two-component synergistic catalyst in organic transformation.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

π-Interpenetrated 3D Covalent Organic Frameworks from Distorted Polycyclic Aromatic Hydrocarbons

Marta Martinez-Abadia et al.

Summary: 3D COFs with pcu topology are obtained from distorted polycyclic aromatic hydrocarbons acting as triangular antiprismatic (D-3d) nodes. These 3D COFs exhibit six-fold interpenetration due to interframework pi-stacking, leading to unexpected charge transport properties.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Inorganic & Nuclear

A recyclable bipyridine-containing covalent organic framework-based QCM sensor for detection of Hg(II) ion in aqueous solution

Dian-Mei Li et al.

Summary: A new bipyridine-containing hydrazone-linked COF, Bpda-Bth COF, was synthesized for the development of a QCM sensor for detecting Hg(II) ions with excellent sensitivity and selectivity.

JOURNAL OF SOLID STATE CHEMISTRY (2021)

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Article Biochemical Research Methods

Covalent Organic Framework-Titanium Oxide Nanocomposite for Enhanced Sonodynamic Therapy

Lihan Cai et al.

Summary: The study successfully synthesized a new sonodynamic therapy material COF-TiO2 NPs and demonstrated its significantly improved anti-tumor effect compared to conventional TiO2 NPs.

BIOCONJUGATE CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Chemically Stable Polyarylether-Based Metallophthalocyanine Frameworks with High Carrier Mobilities for Capacitive Energy Storage

Chongqing Yang et al.

Summary: This study reports the synthesis of COFs with efficient charge transport and chemical stability, as well as the growth of thin films on various substrates. The thin films exhibit excellent semiconducting properties and significant increases in conductivity. Additionally, density functional theory calculations reveal the anisotropic nature of carrier transport in the framework.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Scalable Synthesis of Ultrathin Polyimide Covalent Organic Framework Nanosheets for High-Performance Lithium-Sulfur Batteries

Haiyan Duan et al.

Summary: The newly developed ultrathin 2D polyimide nanosheets show promising performance as host materials for lithium-sulfur batteries, delivering high capacity, excellent rate capability, and superior cycling stability.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Boosting the Electrocatalytic Conversion of Nitrogen to Ammonia on Metal-Phthalocyanine-Based Two-Dimensional Conjugated Covalent Organic Frameworks

Haixia Zhong et al.

Summary: By synthesizing metal-heteroatom-doped two-dimensional conjugated covalent organic frameworks (2D c-COFs), enhanced activity and selectivity of electrocatalytic NRR to ammonia have been achieved, making them among the best NRR electrocatalysts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Stable Bimetallic Polyphthalocyanine Covalent Organic Frameworks as Superior Electrocatalysts

Yan Yue et al.

Summary: The study focuses on the development of highly stable bimetallic COFs for electrocatalytic CO2 reduction. The resulting CuPcF8-CoNPc-COF exhibits exceptional stability and electrocatalytic performance, with a faradaic efficiency of 97% and a turnover frequency of 2.87 s(-1).

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Engineering, Environmental

Boosting photocatalytic CO2 reduction over a covalent organic framework decorated with ruthenium nanoparticles

Ke Guo et al.

Summary: The study developed Ru/TpPa-1 catalysts for photocatalytic reduction of CO2 under visible light irradiation, showing significantly enhanced activity compared to TpPa-1. The interactions between Ru NPs and TpPa-1 were found to enhance visible-light harvesting and extend the service life of photo-generated charge carriers.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Inorganic & Nuclear

Rhodium-catalyzed hydroformylation under green conditions: Aqueous/organic biphasic, “on water”, solventless and Rh nanoparticle based systems

W. Alsalahi et al.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Materials Science, Multidisciplinary

Synthesis and tailored properties of covalent organic framework thin films and heterostructures

Lucas K. Beagle et al.

Summary: This review highlights recent progress in the synthesis, customization of properties, and integration with other materials of porous polymeric covalent organic frameworks (COFs) thin films, showcasing their potential applications in filtration, electronics, sensors, and electrochemistry.

MATERIALS TODAY (2021)

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Article Chemistry, Applied

Phosphine-based covalent organic framework for highly efficient iodine capture

Yuan Li et al.

Summary: Efficient capture of nuclear waste, like radionuclide iodine, has drawn global attention due to health concerns. Phosphine-based covalent organic frameworks (P-COFs) show high specific surface area and thermal stability, making them promising for iodine adsorption. A synthesized biphenyl linked P-COF demonstrates exceptional iodine uptake, indicating potential for radioiodine capture from nuclear waste.

MICROPOROUS AND MESOPOROUS MATERIALS (2021)

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Article Chemistry, Applied

Two-dimensional imine covalent organic frameworks for methane and ethane separation: A GCMC simulation study

Hongbing Wang et al.

Summary: This study found that COFs with trigonal nodes exhibit better performance in separating methane and ethane. Additionally, the nitrogen content and introduction method of COFs also significantly affect the separation performance.

MICROPOROUS AND MESOPOROUS MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Covalent organic frameworks: Design, synthesis, and performance for photocatalytic applications

Hao Li et al.

Summary: COFs, composed of light elements, have gained significant attention due to their excellent physiochemical properties, making them suitable for applications in photocatalytic conditions.

NANO TODAY (2021)

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Article Chemistry, Inorganic & Nuclear

Gram-Scale Synthesis of Cu(II)@COF via Solid-State Coordination Approach for Catalysis of Alkyne-Dihalomethane-Amine Coupling

Xuan Kan et al.

Summary: The novel covalent organic framework material COF-DM, containing chelating coordination environments, was synthesized at the gram level under mild conditions. Its Cu(II)-loaded complex Cu(II)@COF-DM can serve as a highly active heterogeneous catalyst for alkyne-dihalomethane-amine coupling reactions.

INORGANIC CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Three-Dimensional Triptycene-Based Covalent Organic Frameworks with ceq or acs Topology

Hui Li et al.

Summary: This study presents the design and synthesis of 3D triptycene-based COFs with specific topologies, which exhibit excellent gas adsorption performance. The materials show potential for diversifying 3D COFs based on complex building blocks and hold promise for applications in energy storage and environmental fields.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Amine-Linked Covalent Organic Frameworks as a Platform for Postsynthetic Structure Interconversion and Pore-Wall Modification

Lars Grunenberg et al.

Summary: Covalent organic frameworks with amine linkages can be directly accessed using a novel synthetic strategy, enabling further postsynthetic functionalization for increased hydrolytic stability and potential use as heterogeneous catalysts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Engineering, Chemical

A direct Z-scheme BiOBr/TzDa COF heterojunction photocatalyst with enhanced performance on visible-light driven removal of organic dye and Cr(VI)

Yan Zhang et al.

Summary: Efficient Z-scheme heterojunction photocatalyst BTDC was successfully synthesized by modifying 2D BiOBr with 2D TzDa COF, showing excellent performance in degrading RhB and reducing Cr(VI) under visible light. The enhanced efficiency of BTDC was attributed to accelerated charge carriers separation and transport, enhanced visible light absorption, and increased specific surface area.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

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Review Chemistry, Multidisciplinary

Recent Advances on Conductive 2D Covalent Organic Frameworks

Gang Bian et al.

Summary: COFs are a burgeoning family of crystalline porous copolymers that allow for precise atomic insertion of organic components to form periodic networks and ordered nanopores. The review focuses on the electronic properties of conductive 2D-COFs and their applications in various fields, highlighting the potential for essential innovations in electronics and energy-related areas.

SMALL (2021)

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Article Chemistry, Analytical

Recent advances of covalent organic frameworks and their application in sample preparation of biological analysis

Xiaoxue Kou et al.

Summary: Covalent organic frameworks (COFs) are crystalline porous organic polymers constructed with molecular building units via diverse linkage chemistries, showing great potential in sample preparation science and biological analysis due to their tunable properties, large surface area, and unique structural robustness. However, current challenges and future trends need to be addressed in the preparation and applications of COFs in the biological field.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2021)

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Article Chemistry, Analytical

Magnetic covalent organic framework immobilized gold nanoparticles with high-efficiency catalytic performance for chemiluminescent detection of pesticide triazophos

Yuyu Ma et al.

Summary: A core-shell structured Fe3O4 magnetic covalent organic framework was synthesized and employed to immobilize gold nanoparticles, showing great potential in sensitive detection of organophosphorus pesticide triazophos.

TALANTA (2021)

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Article Chemistry, Analytical

Conjugation-regulating synthesis of high photosensitizing activity porphyrin-based covalent organic frameworks for photodynamic inactivation of bacteria

Fan-Lin Meng et al.

Summary: This study demonstrates a conjugation-regulating strategy for designing and synthesizing Por-COFs with high photosensitizing activity for photodynamic inactivation of bacteria. By optimizing conjugation degree, the conjugation of DhaTph and JNU-2 is enhanced, leading to the increase of intersystem crossing process and significant improvement in photosensitizing activity towards bacteria.

TALANTA (2021)

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Article Multidisciplinary Sciences

Rational design of isostructural 2D porphyrin-based covalent organic frameworks for tunable photocatalytic hydrogen evolution

Rufan Chen et al.

Summary: Covalent organic frameworks show promise in photocatalytic hydrogen generation from water, with the incorporation of different transition metals allowing for tuning of the hydrogen evolution rate.

NATURE COMMUNICATIONS (2021)

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Review Chemistry, Physical

Modulating Metal-Organic Frameworks as Advanced Oxygen Electrocatalysts

Zhaoqiang Li et al.

Summary: Oxygen-related electrocatalysis plays a central role in green-energy technologies. Metal-organic frameworks (MOFs) have drawn extensive attention as nonprecious oxygen electrocatalysts due to their tunable compositions. Various strategies have been developed to fabricate MOF-based electrocatalysts and regulate their active sites.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Linking metal-organic cages pairwise as a design approach for assembling multivariate crystalline materials

Adrian W. Markwell-Heys et al.

Summary: Pairwise linking of metal-organic cages introduces defined chemical complexity into porous materials, enabling the design of bespoke multi-functional materials with atomistic control over the location and ordering of chemical functionalities.

CHEMICAL SCIENCE (2021)

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Article Multidisciplinary Sciences

Intrareticular charge transfer regulated electrochemiluminescence of donor-acceptor covalent organic frameworks

Rengan Luo et al.

Summary: This study demonstrates the efficient ECL emitter using a D-A COF with adjustable intrareticular charge transfer, leading to a significant enhancement in ECL intensity. The dual-peaked ECL patterns of COFs are achieved through an IRCT mediated competitive oxidation mechanism, providing new insights for designing next-generation ECL devices.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Platinum Single Atoms Anchored on a Covalent Organic Framework: Boosting Active Sites for Photocatalytic Hydrogen Evolution

Pengyu Dong et al.

Summary: This study demonstrates the controllable synthesis of single-atom platinum photocatalysts with high metal content and long-term durability. The optimized Pt-1@TpPa-1 catalyst exhibits a high photocatalytic H-2 evolution rate and significant activity improvement compared to Pt nanoparticles/TpPa-1 and bare TpPa-1, attributed to effective charge separation and well-dispersed active sites of single-atom Pt. The research provides insights for designing single-atom-based photocatalysts with outstanding stability and efficiency using covalent organic frameworks as support.

ACS CATALYSIS (2021)

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Article Chemistry, Multidisciplinary

A Heterogeneous Nanoscale Covalent Organic Framework Fluorescence Probe for Sensitive Detection of Hydrogen Sulfide

Xuan Ge et al.

Summary: A novel heterogeneous NCOF fluorescence probe for sensitive and selective detection of hydrogen sulfide (H2S) was synthesized through Cu2+ metalated porous nanoscale covalent organic framework (NCOF). The nano CuCOF exhibited excellent sensitive response to H2S with a detection limit of 10 nM, and high selectivity towards H2S relative to other thiols and anionic species. The detection of H2S was successfully achieved in different actual water samples.

CHEMNANOMAT (2021)

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Review Chemistry, Multidisciplinary

Electrochemical ammonia synthesis: Mechanistic understanding and catalyst design

Huidong Shen et al.

Summary: NH3 production currently relies on the energy-intensive Haber-Bosch process, but electrochemical NH3 synthesis powered by renewable electricity offers a promising carbon-neutral and sustainable strategy. However, significant enhancements in energy efficiency, conversion rate, and durability are still needed, achievable only through the design of efficient electrocatalysts.

CHEM (2021)

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Review Multidisciplinary Sciences

NIR-quantum dots in biomedical imaging and their future

Helio M. Gil et al.

Summary: Despite the excellent optical properties and biocompatibility shown by some NIR QDs, there are still challenges to overcome in clinical applications. By selectively controlling synthetic methodologies, it is possible to obtain QDs that emit in different wavelength ranges, allowing for superior imaging properties.

ISCIENCE (2021)

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Review Multidisciplinary Sciences

Emerging concepts in photocatalytic organic synthesis

Susanne Reischauer et al.

Summary: Researchers have improved photocatalysts by adjusting the wavelength and intensity to control or change the selectivity of chemical reactions. In addition, recent efforts have focused on substituting strong reductants, such as elemental lithium and sodium, with light and technological advancements.

ISCIENCE (2021)

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Article Nanoscience & Nanotechnology

Facile Synthesis of Rh Anchored Uniform Spherical COF for One-Pot Tandem Reductive Amination of Aldehydes to Secondary Imines

Nan Wang et al.

Summary: This study successfully developed two kinds of Rh nanoparticle anchored uniform spherical COF catalysts for efficient synthesis of secondary imines with good selectivity and yield. Additionally, the catalyst also showed good activity towards various substituted aromatic aldehyde compounds.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Architectural Design for Enhanced C2 Product Selectivity in Electrochemical CO2 Reduction Using Cu-Based Catalysts: A Review

Changlong Xiao et al.

Summary: Electrochemical conversion of CO2 to value-added chemicals and fuels using Cu catalysts has shown promising potential, but poor product selectivity remains a major technical challenge for global applications. Tailoring the electrocatalyst architecture through nanotechnology principles can significantly impact the adsorption energetics of key intermediates and reaction pathways.

ACS NANO (2021)

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Article Chemistry, Multidisciplinary

A 3D Anionic Metal Covalent Organic Framework with soc Topology Built from Octahedral TiIV Complex for Photocatalytic Reactions

Hui-Shu Lu et al.

Summary: This study successfully constructed a 3D anionic titanium-based COF (Ti-COF-1) with high crystallinity and stability, large specific surface area, and excellent photocatalytic activity. This research demonstrates an attractive strategy for the design of 3D functional COFs.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Macroscopic Ultralight Aerogel Monoliths of Imine-based Covalent Organic Frameworks

Jesus A. Martin-Illan et al.

Summary: This study presents a simple three-step method to produce COF aerogels with extremely low densities and high porosity. These COF aerogels exhibit excellent adsorption capacity and removal efficiency, while maintaining the micro- and meso-porosity of the constituent COFs.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Review Chemistry, Multidisciplinary

The Current Status of MOF and COF Applications

Ralph Freund et al.

Summary: The amalgamation of different disciplines at the heart of reticular chemistry has broadened the boundaries of chemistry. Reticular design enables precise prediction of crystalline framework structures, tunability of chemical composition, and fine-tuning of material properties in metal-organic frameworks and covalent organic frameworks. Leveraging the unique properties of reticular materials has led to significant advances in both fundamental and applied research.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Applied

Covalent organic framework supported Pd(II)-catalyzed conjugate additions of arylboronic acids to α,β-unsaturated carboxylic acids

Min Wen et al.

Summary: A palladium(II)-coordinated covalent organic framework (Pd(II)@COF) was synthesized mechanochemically and demonstrated as a catalyst for conjugate addition reactions. The catalyst showed good recyclability with >80% yields in the first 4 cycles, broadening the application of COFs in catalysis and providing a new option for Pd(II)-catalysis.

APPLIED ORGANOMETALLIC CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Light-Induced Organic Transformations by Covalent Organic Frameworks as Reticular Platforms for Selective Photosynthesis

Paolo Costa et al.

Summary: The photoassisted synthesis of value-added organic products has advanced significantly in recent decades to address the need for sustainable processes and renewable energy. Covalent organic frameworks (COFs) are emerging materials that show potential in bridging the gap between molecular and heterogeneous photocatalysis, offering a new approach for selective organic transformations. Interdisciplinary cooperation between synthetic chemistry and materials science communities is expected to drive further progress in this area.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Chemistry, Multidisciplinary

2D-2D SnS2/Covalent Organic Framework Heterojunction Photocatalysts for Highly Enhanced Solar-Driven Hydrogen Evolution without Cocatalysts

Dandan Shang et al.

Summary: The preparation of 2D-2D SnS2/TpPa-1-COF heterojunction photocatalyst can accelerate the separation of photogenerated charge carriers, broaden the response range to visible light, and enhance the efficiency of photocatalytic H-2 production.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Biochemical Research Methods

Pioneering Iodine-125-Labeled Nanoscale Covalent Organic Frameworks for Brachytherapy

Yijing Zhang et al.

Summary: A nanoscale PEG-COF-Ag material was developed with high radiolabeling rate and stability, which rapidly captured radioiodine and exhibited long tumor retention time, showing excellent cancer cell killing performance. Radioiodine-labeled PEG-COF-Ag could potentially be applied in brachytherapy with promising therapeutic effects, as confirmed by radiotherapy experiments.

BIOCONJUGATE CHEMISTRY (2021)

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Article Chemistry, Physical

An n-Type Benzobisthiadiazole-Based Covalent Organic Framework with Narrowed Bandgap and Enhanced Electroactivity

Rong Wang et al.

Summary: A low-bandgap n-type 2D COF with strong electron affinity and columnar stacking array of benzobisthiadiazole moiety is reported, showing enhanced electroactivity, electrical conductivity, and stability. This COF design strategy promotes the development of electroactive materials with desirable electronic properties for energy storage and electronics applications.

CHEMISTRY OF MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Highly stable dioxin-linked metallophthalocyanine covalent organic frameworks

Zepeng Lei et al.

Summary: Highly stable metallophthalocyanine-based covalent organic frameworks (MPc-dxCOFs) with robust 1,4-dioxin bonds show excellent structural stability even under harsh conditions, and can be used as efficient electrocatalysts for the oxygen reduction reaction without the need for pyrolysis treatment.

CHINESE CHEMICAL LETTERS (2021)

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Review Chemistry, Inorganic & Nuclear

Porphyrin- and porphyrinoid-based covalent organic frameworks (COFs): From design, synthesis to applications

Minghui Chen et al.

Summary: COFs are a type of structurally ordered porous materials constructed with light atoms through covalent bonds, with recent interest in tetrapyrrolic macrocycle-based COFs using porphyrin and its analogs as building blocks, showing potential applications in diverse fields.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Chemistry, Physical

The interfacial charge transfer in triphenylphosphine-based COF/PCN heterojunctions and its promotional effects on photocatalytic hydrogen evolution

Jie Tang et al.

Summary: The novel triphenylphosphine-based covalent organic frameworks (P-COF-1) were introduced into polymeric carbon nitride (PCN) to fabricate P-COF-1/PCN heterojunctions for improved photocatalytic activity in hydrogen evolution. The well-matched band structure between P-COF-1 and PCN facilitates electron migration and enhances photo-generated carriers separation, resulting in enhanced photocatalytic hydrogen evolution efficiency.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Review Chemistry, Physical

Graphene-based electrocatalysts: Hydrogen evolution reactions and overall water splitting

Meena Nemiwal et al.

Summary: The paper reviews recent advances in graphene-based electrocatalysts for hydrogen evolution reaction and overall water splitting, focusing on strategies for optimizing electrocatalytic properties and discussing challenges and future prospects.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Review Chemistry, Multidisciplinary

Main-group elements boost electrochemical nitrogen fixation

Laiquan Li et al.

Summary: In this review, we critically evaluate the application of main-group elements in electrocatalytic nitrogen reduction, present methodologies for N2 activation and HER suppression, and demonstrate the potential of MGEs-based mechanisms for smart design. The conclusion shows that MGEs can significantly enhance electrochemical N2 fixation.

CHEM (2021)

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Article Multidisciplinary Sciences

Autonomous materials synthesis via hierarchical active learning of nonequilibrium phase diagrams

Sebastian Ament et al.

Summary: Autonomous experimentation enabled by artificial intelligence offers a new paradigm for accelerating scientific discovery. Nonequilibrium materials synthesis, exemplifying complex and resource-intensive experimentation, can be accelerated through hierarchical autonomous experimentation guided by the Scientific Autonomous Reasoning Agent (SARA). SARA integrates robotic materials synthesis and a range of AI methods to efficiently explore multidimensional parameter space and map processing phase diagrams.

SCIENCE ADVANCES (2021)

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Article Chemistry, Multidisciplinary

Tuning the Topology of Three-Dimensional Covalent Organic Frameworks via Steric Control: From pts to Unprecedented Ijh

Yang Xie et al.

Summary: This study describes the successful synthesis of two highly crystalline 3D COFs through design, and demonstrates that the topology of the framework can be controlled by steric hindrance via altering substituents. The research highlights the potential for designing 3D COFs with new topology for various applications.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Two-Dimensional Covalent Organic Frameworks with Cobalt(II)-Phthalocyanine Sites for Efficient Electrocatalytic Carbon Dioxide Reduction

Bin Han et al.

Summary: The study presents the design and synthesis of two-dimensional polyimide-linked phthalocyanine COFs with stable properties, showing potential applications in electrocatalysis.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Editorial Material Chemistry, Physical

Electrocatalytic conversion of carbon dioxide for the Paris goals

Sarah M. Jordaan et al.

Summary: The electrocatalytic conversion of CO2 into useful products can contribute to the Paris goals by utilizing abundant low-carbon power and technological advances. Coordinated efforts are needed to support the commercialization of such capture and catalytic technologies while deploying the necessary infrastructure.

NATURE CATALYSIS (2021)

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Review Materials Science, Multidisciplinary

A review of material aspects in developing direct Z-scheme photocatalysts

Xuan Li et al.

Summary: This study provides a comprehensive evaluation of direct Z-scheme photocatalysts, focusing on the formation mechanisms, applications, different charge transfer mechanisms, material systems, and emerging material modification strategies for performance improvement.

MATERIALS TODAY (2021)

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Article Chemistry, Multidisciplinary

Edge confined covalent organic framework with efficient biocompatibility and photothermic conversion

Bingjie Li et al.

Summary: By hydroxylating edges of a COF to enhance water solubility and nanoscale size, this research achieves superior biocompatibility and cell penetrability, paving the way for new applications of two-dimensional materials in biomedicine.

NANO TODAY (2021)

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Article Nanoscience & Nanotechnology

Fluorescent Nanoscale Covalent Organic Frameworks with the Theoretically Matched Redox Potential of Fe3+/Fe2+ for Monitoring of Adenosine-5′-Triphosphate in Cells

Caiping Ding et al.

Summary: By studying the energy band structure of NCOF and its matching with the redox potential of Fe3+/Fe2+, a fluorescent probe based on NCOF was successfully designed for sensing Fe3+ and ATP in cells, achieving ultralow detection limits and a broad linear response range. The excellent fluorescence properties and good biocompatibility of NCOF allowed for sensitive imaging of Fe3+ and real-time monitoring of ATP in cells, showing promising potential for the development of fluorescent nanoprobes in biosensor and bioimaging applications.

ACS APPLIED NANO MATERIALS (2021)

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Article Chemistry, Multidisciplinary

An overview on covalent organic frameworks: synthetic reactions and miscellaneous applications

Z. Zhuang et al.

Summary: COFs are a new class of porous crystalline materials constructed completely from organic building blocks through robust covalent bonds, with high surface areas and stability, making them candidates for various applications. Understanding the structures and properties of COFs can provide insights into their design principles.

MATERIALS TODAY CHEMISTRY (2021)

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Review Chemistry, Multidisciplinary

Advances in Chiral Metal-Organic and Covalent Organic Frameworks for Asymmetric Catalysis

Hao Zhang et al.

Summary: Asymmetric catalysis is essential due to the increasing demand for optically pure substances. Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) show great potential for heterogeneous asymmetric catalysis. The unique properties of MOFs and COFs make them highly active and enantioselective for a wide range of asymmetric catalytic organic transformations.

SMALL (2021)

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Article Materials Science, Multidisciplinary

Self-Assembled Ag2S-QD Vesicles for In Situ Responsive NIR-II Fluorescence Imaging-Guided Photothermal Cancer Therapy

Tianji Liu et al.

Summary: Bioimaging guided photothermal therapy using stimulation-responsive assembled Ag2S vesicles offers a promising approach for cancer therapy. The vesicles show activation in acidic tumor tissues while remaining nonfunctional in normal tissues, with larger sizes enhancing tumor accumulation and controllable disassembly for improved lesion targeting. This innovative therapeutic strategy provides a new direction for activated NIR-II fluorescence imaging guided cancer therapy.

ADVANCED OPTICAL MATERIALS (2021)

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Article Multidisciplinary Sciences

Self-assembly of anthraquinone covalent organic frameworks as 1D superstructures for highly efficient CO2 electroreduction to CH4

Ming Liu et al.

Summary: This study presents the design of selective and efficient COFs-based electrocatalysts with tunable morphology for efficient CO2 reduction reaction (CO2RR) to CH4. By introducing a specific reaction, COFs with tunable morphology were produced, demonstrating the importance of these superstructures for efficient CO2RR. The obtained COF-based superstructures showed superior performance in electrocatalytic CO2RR, providing a general methodology for exploring morphology-controlled COFs.

SCIENCE BULLETIN (2021)

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Review Chemistry, Multidisciplinary

Covalent Organic Polymers and Frameworks for Fluorescence-Based Sensors

Tina Skorjanc et al.

Summary: This review explores the potential of covalent organic polymers and covalent organic frameworks as sensors, focusing on their use of fluorescence spectroscopy for detection of various analytes. The discussion includes the quantification of sensor performance and highlights potential issues to be addressed in the future development of COP and COF fluorescence-based sensors.

ACS SENSORS (2021)

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Article Multidisciplinary Sciences

Ether-linked porphyrin covalent organic framework with broadband optical switch

Zhiwei Liu et al.

Summary: COF-Pors are novel ether-linked porphyrin covalent organic framework materials with highly ordered lattice structure, exhibiting large NLO effect in a broad range from visible to near infrared. They show typical saturable absorption effect at lower incident laser energy, and reverse saturable absorption response at higher pulse energy.

ISCIENCE (2021)

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Review Chemistry, Multidisciplinary

Heterogeneous Molecular Catalysts of Metal Phthalocyanines for Electrochemical CO2 Reduction Reactions

Yueshen Wu et al.

Summary: Heterogenization of molecular catalysts on substrates allows for optimization of CO2 electroreduction reactions, with factors like active material dispersion and support conductivity playing crucial roles in controlling activity. Modifying ligand substituents can enhance the redox properties of the molecule, improving catalytic activity and stability.

ACCOUNTS OF CHEMICAL RESEARCH (2021)

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Article Nanoscience & Nanotechnology

Cationic Covalent Organic Framework as an Ion Exchange Material for Efficient Adsorptive Separation of Biomolecules

Imann Mosleh et al.

Summary: The study explored the use of ionic COF Py-BPy+-COF as an ion exchange material for biomolecule separation, demonstrating high adsorption capacities and selectivity for different amino acids and proteins. Desorption experiments showed successful separation of proteins based on isoelectric point, hydrophobicity, and ability to penetrate the crystalline material, suggesting Py-BPy2+-COF can be a robust anion exchange biomolecule separation material.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Near-Infrared Photothermal/Photodynamic-in-One Agents Integrated with a Guanidinium-Based Covalent Organic Framework for Intelligent Targeted Imaging-Guided Precision Chemo/PTT/PDT Sterilization

Yu-Shi Liu et al.

Summary: The study presents a smart nanoplatform with synergistic chemo-phototherapy function for targeted imaging and efficient sterilization of bacteria, with minimal side effects on normal tissues.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Alkynyl-Based Covalent Organic Frameworks as High-Performance Anode Materials for Potassium-Ion Batteries

Eric R. Wolfson et al.

Summary: This study explores the use of alkynyl-based COFs as bulk anode materials for KIBs, achieving high performance under localized high-concentration electrolyte conditions. TAEB-COF displays high capacity and efficiency, while DBA-COF 3 also exhibits good cycling performance.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Fabrication of Biomolecule-Covalent-Organic-Framework Composites as Responsive Platforms for Smart Regulation of Fermentation Application

Shan Qiao et al.

Summary: The study introduced antimicrobial biomolecules nisin into covalent organic frameworks to establish an intelligent responsive platform, which could inhibit microbial contamination and adapt to environmental variations during fermentation, while not affecting fermentation strains. The encapsulated biomolecules exhibited enhanced stability and pH-responsive releasing process, paving a new avenue for the preparation of highly efficient and intelligent antimicrobial agents for the regulation of the fermentation process.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Exciton-Photonics: From Fundamental Science to Applications

Surendra B. Anantharaman et al.

Summary: The article elaborates on recent research progress on the coupling of light in excitonic semiconductors and the optical properties of hybrid quasiparticles, emphasizing the growing need for excitonic material development and optical engineering techniques. It also evaluates the challenges faced in implementing practical devices with various materials.

ACS NANO (2021)

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Article Chemistry, Multidisciplinary

Two-Photon Absorption Induced Cancer Immunotherapy Using Covalent Organic Frameworks

Lei-Lei Yang et al.

Summary: The combination of immune checkpoint blockade therapy and photodynamic therapy shows promising potential in inducing efficient immunogenic cell death and immune response, offering new hope for cancer treatment.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Molecular Engineering of Covalent Organic Framework Cathodes for Enhanced Zinc-Ion Batteries

Wenxi Wang et al.

Summary: Covalent organic frameworks (COFs) show promising performance as electrode materials for electrochemical storage, particularly in zinc-ion batteries, when the quinone group is introduced into their structure to enhance Zn2+ storage capability and increase average charge-discharge potential. This study highlights the importance of molecular engineering in improving the practical charge storage performance of COFs.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Catalyst- and Solvent-Free Synthesis of a Chemically Stable Aza-Bridged Bis(phenanthroline) Macrocycle-Linked Covalent Organic Framework

Yi Jiang et al.

Summary: Developing new linkage-based conductive COFs is a major focus in reticular chemistry due to their potential applications in energy storage. The solvent- and catalyst-free synthesis of ABBPM-COF shows promise in providing a chemically stable conductive material with semiconducting properties. The structure of ABBPM-COF, elucidated through various techniques, demonstrates its crystalline nature and excellent stability in various solutions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Structural engineering in pre-functionalized, imine-based covalent organic framework via anchoring active Ru(II)-complex for visible-light triggered and aerobic cross-coupling of α-amino esters with indoles

Gaurav Kumar et al.

Summary: This study explores the site-specific functionalization of sp3 C-H bonds adjacent to a nitrogen atom using a chemically robust COF material. The developed Ru-COF acts as a visible light photocatalyst for cross-dehydrogenative coupling reactions with excellent yield and functional group tolerance. The photocatalytic route is detailed through modulation of optical band-gap and validation of a single-electron-transfer pathway.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Physical

Photocatalytic CO2 conversion over single-atom MoN2 sites of covalent organic framework

Mingpu Kou et al.

Summary: This study successfully introduced single-atom MoN2 sites into COF to construct Mo-COF materials, achieving the goal of converting CO2 into high added value hydrocarbons products and providing a new approach for this process.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Multidisciplinary

Alkynyl-Based sp2 Carbon-Conjugated Covalent Organic Frameworks with Enhanced Uranium Extraction from Seawater by Photoinduced Multiple Effects

Cheng-Rong Zhang et al.

Summary: A novel amidoxime (AO) crystalline covalent organic framework (BD-TN-AO) with highly conjugated structure and excellent photocatalytic activity is reported, which exhibits high anti-biofouling activity and efficient extraction of uranium from seawater. The framework's outstanding photoinduced effects lead to a high uranium adsorption capacity under simulated sunlight irradiation in microorganism-containing natural seawater.

CCS CHEMISTRY (2021)

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Article Engineering, Environmental

Vinylene-linked covalent organic frameworks with enhanced uranium adsorption through three synergistic mechanisms

Rui-Han Xu et al.

Summary: The study presents a vinylene-linked covalent organic framework (Tp-TMT) as a uranium adsorbent, which enhances uranium adsorption through selective ligand binding, chemical reduction, and photocatalytic reduction mechanisms. Tp-TMT exhibits outstanding uranium adsorption capacity under light irradiation through synergistic effects of its unique structure and excellent photocatalytic activity.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Engineering, Environmental

In situ grown COFs on 3D strutted graphene aerogel for electrochemical detection of NO released from living cells

Peihua Zhu et al.

Summary: The COF-366-Fe/GA biosensor showed ultrasensitive response in a wide range of 0.18 to 400 μM with a lower detection limit (30 nM) and higher sensitivity (8.8 μA·μM-1·cm-2), and could immediately capture the molecular signals released by human umbilical vein endothelial cells. The synergistic effect between COF-366-Fe and 3D GA provides a promising platform for real-time analysis of biomarkers in clinical diagnostics.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Multidisciplinary

Pd-loaded Two-in-one Covalent Organic Framework Composite Material: Synthesis, Characterization and Detection of Bisphenol A

Bingbing He et al.

Summary: A novel Pd-BFBAPy-COF (Pd-COF) loaded with Pd-NPs was successfully synthesized using two-in-one imine covalent organic framework materials as carrier. The loaded Pd-NPs on Pd-COF were proved to be completed by coordination, and the Pd-COF showed good electrochemical induction to BPA. This work provides a cheap and facile synthesis route for the preparation of an electrochemical detection material with practical value.

CHEMISTRY LETTERS (2021)

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Article Chemistry, Multidisciplinary

Pyrimidine-Functionalized Covalent Organic Framework and its Cobalt Complex as an Efficient Electrocatalyst for Oxygen Evolution Reaction

Yuxiang Zhao et al.

Summary: A pyrimidine-modified COF-Pyr was synthesized via the Povarov reaction and combined with metal ions to form Co@COF-Pyr. This stable material exhibited remarkable OER performance in 1.0M KOH aqueous solution, with a large specific surface area and regular crystal structure providing efficient oxygen electrocatalysis.

CHEMSUSCHEM (2021)

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Review Chemistry, Inorganic & Nuclear

Covalent organic frameworks for fluorescent sensing: Recent developments and future challenges

Lulu Guo et al.

Summary: Covalent-organic frameworks (COFs) are organic structures connected by strong covalent bonds, with highly conjugated crystalline structure and controllable porosity, showing great potential in the field of fluorescent sensors.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Chemistry, Inorganic & Nuclear

Metalloporphyrin and Ionic Liquid-Functionalized Covalent Organic Frameworks for Catalytic CO2 Cycloaddition via Visible-Light-Induced Photothermal Conversion

Luo-Gang Ding et al.

Summary: A porphyrin and imidazolium-ionic liquid-decorated quinoline-linked covalent organic framework (COF-P1-1) was synthesized via a three-component one-pot Povarov reaction, followed by post-synthetic metallization to form a chemically stable and highly selective CO2 adsorbing metallized COF-P1-2 with good visible-light-induced photothermal conversion ability. The presence of Co(II)-porphyrin and imidazolium-IL within COF-P1-2 ensures highly efficient activity for CO2 cycloaddition, with thermal energy derived from visible-light irradiation. This research offers a novel approach for eco-friendly and energy-saving COF-based greenhouse gas disposal.

INORGANIC CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Hydroxide Anion Transport in Covalent Organic Frameworks

Shanshan Tao et al.

Summary: Designing and synthesizing anionic covalent organic frameworks has been shown to promote hydroxide anion transport, achieving exceptional conductivity compared to linear polymers and other porous frameworks. The study reveals that hydroxide anions transport via a proton-exchange hopping mechanism. These results open up new possibilities for designing framework materials for energy conversions.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Substoichiometric 3D Covalent Organic Frameworks Based on Hexagonal Linkers

Liangjun Chen et al.

Summary: Covalent organic frameworks (COFs) have shown significant success in the past decade, with recent research demonstrating the potential for sub-stoichiometric construction to create new structures and applications. This work highlights the possibility of partially connected frameworks in COFs, leading to new possibilities for enhanced functionality and controlled structures.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

A Cubic 3D Covalent Organic Framework with nbo Topology

Xue Wang et al.

Summary: By using tetrahedral spiroborate linkages, square-planar cobalt(II) phthalocyanine units are assembled into a 3D COF with noninterpenetrated nbo topology, exhibiting high crystallinity and long-range order. The COF has cubic pores and permanent porosity, with a BET surface area of 1726 m(2) g(-1).

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Three-Dimensional Covalent Organic Frameworks with Cross-Linked Pores for Efficient Cancer Immunotherapy

Liang Zhang et al.

Summary: A series of three-dimensional (3D) covalent organic frameworks (COFs) were designed and synthesized as inducers for immunogenic cell death (ICD) in cancer immunotherapy. These COFs exhibit outstanding ICD-inducing efficiency and one member, COF-609, showed significant therapeutic effects in a mouse model of breast cancer.

NANO LETTERS (2021)

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Article Chemistry, Multidisciplinary

Ionic Covalent-Organic Framework Nanozyme as Effective Cascade Catalyst against Bacterial Wound Infection

Yite Li et al.

Summary: The study developed a cascade catalyst triggered by glucose, which efficiently converts glucose into hydrogen peroxide to improve peroxidase activity and generate more toxic hydroxyl radicals against bacterial wound infections, enhancing the healing effects.

SMALL (2021)

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Article Chemistry, Multidisciplinary

A Ferrocene-Functionalized Covalent Organic Framework for Enhancing Chemodynamic Therapy via Redox Dyshomeostasis

Le-Le Zhou et al.

Summary: A nanodrug, RSL3@COF-Fc (2b), based on covalent organic framework (COF) has been fabricated to enhance cellular damage induced by CDT through promoting Fenton-like reactions and inhibiting GPX4 irreversibly. This approach synergistically results in massive lipid peroxide accumulation, subsequent cell damage, and ultimately ferroptosis, not being limited by intracellular glutathione, providing new insights for developing COF-based nanomedicine.

SMALL (2021)

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Article Chemistry, Multidisciplinary

3D Hydrazone-Functionalized Covalent Organic Frameworks as pH-Triggered Rotary Switches

Wenjuan Zhao et al.

Summary: This study introduces the first case of 3D hydrazone-decorated COFs as pH-triggered molecular switches and explores their application in stimuli-responsive drug delivery systems. These functionalized COFs show intelligent sustained-release effects under pH changes, which could be important for improving drug targeting.

SMALL (2021)

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Article Chemistry, Organic

Study on the fluorescent covalent organic framework for selective turn-off recognition and detection of Fe3+ ions

Tian Zhang et al.

Summary: TT-COF exhibits high selectivity and fluorescence quenching towards Fe3+ in ethanol, with a low detection limit. The unique pore structure and coordination with Fe3+ ions contribute to its high selectivity, confirmed through methods like EDTA. The coordination of TT-COF and Fe3+ ion was further supported by XPS spectra and DFT calculation, highlighting its potential as a fluorescence sensor for specific metal ions.

TETRAHEDRON (2021)

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Article Multidisciplinary Sciences

Ultra-fast single-crystal polymerization of large-sized covalent organic frameworks

Lan Peng et al.

Summary: This study reveals that supercritical CO2 significantly accelerates single-crystal polymerization, allowing for the production of large-sized, high-quality 2D COF single crystals.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

A general design approach toward covalent organic frameworks for highly efficient electrochemiluminescence

Ya-Jie Li et al.

Summary: Electrochemiluminescence (ECL) plays a key role in analysis and sensing, but its application is limited by a lack of highly tunable luminophores. The authors demonstrate the design of highly efficient ECL luminophores of covalent organic frameworks (COFs) in aqueous media by simultaneously restricting the donor and acceptor to the COFs' electron configurations and constructing charge transport networks through olefin linkages.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Mechanically Constrained Catalytic Mn(CO)3Br Single Sites in a Two-Dimensional Covalent Organic Framework for CO2 Electroreduction in H2O

Geyla C. Dubed Bandomo et al.

Summary: The study presents a newly devised CO2 reduction catalyst by loading single-atom centers within a bipyridyl-based COF, showing improved catalytic performance. The findings can guide the rational development of isolated single-atom sites and the enhancement of catalytic performance in reticular materials.

ACS CATALYSIS (2021)

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Article Chemistry, Physical

Photoredox Heterobimetallic Dual Catalysis Using Engineered Covalent Organic Frameworks

Alberto Lopez-Magano et al.

Summary: The functionalization of an imine-based layered covalent organic framework has allowed the obtention of a heterobimetallated material with photoactive Ir and Ni fragments immobilized within the porous structure. These heterogeneous light-mediated reactions showed enhanced activity and stability compared to analogous homogeneous systems.

ACS CATALYSIS (2021)

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Article Chemistry, Physical

Covalent Organic Frameworks as Emerging Platforms for CO2 Photoreduction

Ha L. Nguyen et al.

Summary: Covalent organic frameworks (COFs) are a new class of porous crystalline materials with semiconductor properties, showing promising performance in CO2 photoreduction catalysis. Principles of design and recent advancements in using COFs for CO2 photoreduction can serve as a reference for developing CO2 reduction catalysts.

ACS CATALYSIS (2021)

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Article Engineering, Biomedical

Acridine-Based Covalent Organic Framework Photosensitizer with Broad-Spectrum Light Absorption for Antibacterial Photocatalytic Therapy

Cuiping Zhang et al.

Summary: TPDA, an acridine-based COF photosensitizer, has been synthesized with multiple active sites and shows high antibacterial activities, wide optical absorption spectrum, and efficient protection against skin infections in fish within a short time.

ADVANCED HEALTHCARE MATERIALS (2021)

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Review Nanoscience & Nanotechnology

Recent Progress in Nanoscale Covalent Organic Frameworks for Cancer Diagnosis and Therapy

Shuncheng Yao et al.

Summary: Covalent organic frameworks (COFs) are porous and crystalline materials with diverse characteristics, making them excellent candidate materials for biomedical applications such as drug delivery, diagnostic imaging, and disease therapy. The components, dimensions, and guest molecule loading into COFs have a great influence on their performance in various applications, requiring further investigation.

NANO-MICRO LETTERS (2021)

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Article Chemistry, Multidisciplinary

Decoration of Active Sites in Covalent-Organic Framework: An Effective Strategy of Building Efficient Photocatalysis for CO2 Reduction

Yan Yang et al.

Summary: By tuning the coordination environment of metal centers in COF, efficient photocatalytic CO2 reduction with excellent activity and stability was achieved. The CO evolution rate of TFBD-COF-Co-SA is 4.1 times higher than that of TFBD-COF-Co without the coordination of SA ligand, showing comparable heterocatalytic activity to homocatalytic activity of the Co(SA)(2) molecular catalyst.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Review Materials Science, Multidisciplinary

Carbon Dots for Photocatalytic Degradation of Aqueous Pollutants: Recent Advancements

Kamran Akbar et al.

Summary: The text discusses the significant progress made by humanity in technology, domestic, and industrial sectors, but highlights the pollution caused to the planet as a result. The focus is on aquatic pollution, with the introduction of carbon dots as a promising material for efficient removal of aqueous pollutants through photodegradation. The unique properties of carbon dots make them an ideal candidate for solar-driven chemical reactions in the degradation of aqueous pollutants.

ADVANCED OPTICAL MATERIALS (2021)

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Article Chemistry, Physical

Covalent Organic Frameworks for Simultaneous CO2 Capture and Selective Catalytic Transformation

Yaling Li et al.

Summary: The development of a metalloporphyrin-based covalent organic framework that can efficiently capture and convert CO2 into cyclic carbonates under mild conditions is a promising strategy for reducing carbon emissions. This framework also showed dramatic size selectivity for substrates, highlighting its potential for practical application in simultaneous CO2 absorption and utilization.

CATALYSTS (2021)

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Article Materials Science, Biomaterials

Electrospun Fibrous Membrane Containing a Cyclodextrin Covalent Organic Framework with Antibacterial Properties for Accelerating Wound Healing

Congcong Li et al.

Summary: The study introduced a novel method for fabricating a fiber membrane that inhibits bacterial infections and accelerates wound healing, with good biocompatibility and antibacterial activity, showing promising potential for promoting wound healing.

ACS BIOMATERIALS SCIENCE & ENGINEERING (2021)

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Article Chemistry, Physical

Constructing Catalytic Crown Ether-Based Covalent Organic Frameworks for Electroreduction of CO2

Shuhao An et al.

Summary: A crown ether and cobalt-porphyrin-based COF was developed for catalytic reduction of carbon dioxide, showing remarkable performance with high Faradaic efficiencies and maximum turnover frequency. The crown ether units enhanced the hydrophilicity, electron transfer ability, and binding capacity of the COF, leading to its excellent catalytic performance.

ACS ENERGY LETTERS (2021)

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Review Chemistry, Multidisciplinary

Single-atom engineering of metal-organic frameworks toward healthcare

Dongdong Wang et al.

Summary: Single-atomic nanocatalysts/nanozymes (SACs/SAEs) are a research frontier due to their high atom-utilization efficiency and well-defined localized structure. Metal-organic frameworks (MOFs) are promising host materials for constructing SACs/SAEs, with the potential for MOF-derived SACs/SAEs through pyrolysis. The recent advances of MOF-based SACs/SAEs in enzymatic healthcare applications, such as cancer treatment and biosensing, offer great opportunities for next-generation biosafe SACs/SAEs.

CHEM (2021)

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Article Chemistry, Multidisciplinary

Exceptional electron conduction in two-dimensional covalent organic frameworks

Enquan Jin et al.

Summary: The study reports a method to develop high-rate n-type semiconductors with exceptional electron mobility. This approach shows promise in enhancing the performance of organic/polymeric semiconductors.

CHEM (2021)

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Review Chemistry, Multidisciplinary

Recent advances in the chemistry and applications of N-heterocyclic carbenes

Peter Bellotti et al.

Summary: N-Heterocyclic carbenes have attracted significant interest due to their versatility, modularity and strong coordinating properties, leading to a rapid increase in utilization across various fields in the past decade. Future directions and recent developments in the field are also highlighted in this review.

NATURE REVIEWS CHEMISTRY (2021)

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Article Multidisciplinary Sciences

On-Surface Bottom-Up Construction of COF Nanoshells towards Photocatalytic H2 Production

Yao Chen et al.

Summary: The rational design of an outer shell is crucial for enhancing the photocatalytic efficiency of core-shell structured photocatalysts. In this study, a covalent organic framework (COF) nanoshell was synthesized and deposited on the cadmium sulfide (CdS) core to improve light-harvesting and charge separation efficiency, leading to superior photocatalytic H-2 evolution compared to other COF-based photocatalysts. This framework nanoshell provides insights into advanced shell architecture design for coordinated charge and molecule transport in core-shell structured photocatalysts.

RESEARCH (2021)

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Article Materials Science, Multidisciplinary

Covalent organic frameworks: Advances in synthesis and applications

Amna Altaf et al.

Summary: Covalent organic frameworks (COFs) are a new class of porous materials with structural diversity and high porosity, being widely used in water decontamination, energy, gas storage, among other fields. Significant advances have been made in the synthesis and applications of COFs, with key challenges and future directions being discussed in this review.

MATERIALS TODAY COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Spirobifluorene-Based Three-Dimensional Covalent Organic Frameworks with Rigid Topological Channels as Efficient Heterogeneous Catalyst

Yamei Liu et al.

Summary: This work successfully constructed a new 3D COF and demonstrated its application in heterogeneous catalysis. By detailed structural analysis, it was found to have efficient molecular adsorption and catalytic performance, making it a stable and active catalyst.

CCS CHEMISTRY (2021)

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Review Green & Sustainable Science & Technology

Metal-Organic Frameworks for Photo/Electrocatalysis

Junkuo Gao et al.

Summary: Metal-organic frameworks (MOFs) composed of metal clusters/ions and organic ligands are ideal materials for photo/electrocatalysis due to their large surface areas, high porosity, and tunable optical and electronic structures. Recent advances in MOF-based photo/electrocatalysts, including pristine MOFs, MOF composites, and MOF derivatives, as well as novel strategies to improve performance have been summarized. The current challenges and future development of MOFs for photo/electrocatalysis are also discussed and outlined.

ADVANCED ENERGY AND SUSTAINABILITY RESEARCH (2021)

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Article Engineering, Biomedical

Nanoparticulate Systems for Bioactive Agent Delivery: What Is the Missing Link in Research for Real Applications?

Wing-Fu Lai et al.

Summary: Various nanoparticulate systems have been used as carriers of bioactive agents, but their efficiency in clinical translation is currently low, partly due to a lack of awareness of the similarity between a carrier and a real drug. To enhance clinical translation, it is important to treat a carrier as an ordinary drug.

ADVANCED NANOBIOMED RESEARCH (2021)

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Article Chemistry, Multidisciplinary

Design of well-defined shell-core covalent organic frameworks/metal sulfide as an efficient Z-scheme heterojunction for photocatalytic water splitting

Yan Wang et al.

Summary: The development of a covalent-organic framework (COF)-based Z-scheme heterostructure for solar energy driven water splitting shows promise, with a direct Z-scheme heterostructure COF-metal sulfide hybrid being successfully fabricated in this study. The tight interface formed by chemical bonding between T-COF and CdS, along with proper band alignment and strong interfacial interactions, enable efficient charge separation and transfer, leading to improved efficiency in photocatalytic water splitting.

CHEMICAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

2D Salphen-based heteropore covalent organic frameworks for highly efficient electrocatalytic water oxidation

Lin-Lin Wang et al.

Summary: The study successfully constructed a series of 2D COFs with hexagonal and quadrilateral pores, and found that metallized salphen-based COFs can be used as electrocatalysts for water oxidation.

CHEMICAL COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Reversing tumor multidrug resistance with a catalytically active covalent organic framework

Peng Gao et al.

Summary: COF(Fe) is a catalytically active nano covalent organic framework that can reverse tumor multidrug resistance. By converting H2O2 into OH to induce oxidation stress and down-regulate MDR protein, COF(Fe) enhances intracellular drug accumulation to overcome MDR.

CHEMICAL COMMUNICATIONS (2021)

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Review Chemistry, Multidisciplinary

Covalent organic frameworks as multifunctional materials for chemical detection

Zheng Meng et al.

Summary: COFs, as a new class of materials, show great potential in advancing chemical detection with high sensitivity and selectivity. By harnessing the unique properties of COFs, different types of chemical detection systems can be developed for various analytes under different mechanisms.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Multidisciplinary

Two-dimensional porphyrin covalent organic frameworks with tunable catalytic active sites for the oxygen reduction reaction

Jie-Yu Yue et al.

Summary: The ORR catalytic activity of four novel two-dimensional porphyrin COFs was tuned by changing the M atom in the center of the porphyrin backbone. The experimental structure-function relationship was consistent with density functional theory calculations based on the O-2-O-2*-OOH*-O*-OH*-OH- route.

CHEMICAL COMMUNICATIONS (2021)

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Review Chemistry, Multidisciplinary

Covalent organic frameworks for optical applications

Liang Zhang et al.

Summary: This review focuses on the optical properties of covalent organic frameworks (COFs) and how they correlate with the microscopic structure of COFs. It explores the relationship between key structural factors like connection, orientation, and alignment of molecular building blocks, and the optical properties of COFs. Additionally, the properties of COFs are analyzed from both energy and dynamic aspects to provide insights into the possible underlying mechanisms.

AGGREGATE (2021)

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Review Chemistry, Multidisciplinary

Recent advances in electrocatalysis with phthalocyanines

Shaoxuan Yang et al.

Summary: The applications of phthalocyanines (Pcs) in electrocatalysis have attracted attention due to their advantages of low cost, facile synthesis, and good chemical stability. Pcs offer high tailorability and structural diversity, making them promising for optimization in electrochemical devices and for various electrochemical reactions. Further research is needed to explore the structure-composition catalytic activity relationships of different Pc materials for future practical applications.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Nanoscale covalent organic frameworks: from controlled synthesis to cancer therapy

Xuelu He et al.

Summary: Covalent organic frameworks (COFs) are a type of crystalline porous materials with low density, large surface area, and adjustable pore size, showing great potential in biomedical applications. However, their relatively large size and irregular morphology affect their biocompatibility. The controlled design strategies and unique properties of nanoscale COFs (NCOFs) for biomedical applications, particularly in cancer therapy, are discussed in this review.

CHEMICAL COMMUNICATIONS (2021)

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Review Chemistry, Physical

COF-confined catalysts: from nanoparticles and nanoclusters to single atoms

Mengyi Xu et al.

Summary: Nano-scale particles confined in covalent-organic frameworks can enhance catalytic performance due to the high crystallinity, porosity, and tunable structures of COFs. The confinement effect, which can be controlled through various synthetic methods, plays a crucial role in improving catalyst efficiency in heterogeneous catalytic reactions.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Physical

Confining perovskite quantum dots in the pores of a covalent-organic framework: quantum confinement- and passivation-enhanced light-harvesting and photocatalysis

Genping Meng et al.

Summary: This study demonstrates a simple and versatile method to grow CsPbX3 perovskite quantum dots into ordered mesopores, forming emission-tunable antennas with enhanced photoluminescence quantum yield and thermal stability. By tailoring the halogen component, the emission spectra of embedded perovskite quantum dots were precisely tuned, showing excellent catalytic activity in photochemical reactions.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary

Cell membrane-anchoring covalent organic framework nanosheets for single-laser-triggered synergistic tumor therapy

Yuanyuan Chen et al.

Summary: Engineered pHLIP COF NSs have been developed for synergistic tumor therapy by anchoring to cell membranes and using a single laser irradiation.

CHEMICAL COMMUNICATIONS (2021)

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Review Chemistry, Physical

Covalent Organic Framework Membranes for Efficient Chemicals Separation

Rui Wang et al.

Summary: Covalent organic frameworks (COFs) are a class of emerging organic porous crystalline materials composed entirely of organic linkers connected by strong covalent bonds. They have unique characteristics that perfectly meet the requirements for the fabrication of advanced separation membranes. Significant progress has been made in the preparation and application of COF membranes over the past few years, with discussions on the structure-performance relationship, intrinsic properties' effects, and fabrication methods.

SMALL STRUCTURES (2021)

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Article Chemistry, Multidisciplinary

In Silico Design of Covalent Organic Framework-Based Electrocatalysts

Wei Zhou et al.

Summary: Using density functional theory and machine learning, a highly efficient COF catalyst was designed and the best structure with superior OER performance was predicted through machine learning. The synthesized Ni-COF showed comparable electrocatalytic activity with the best reported COF-based OER catalysts.

JACS AU (2021)

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Review Chemistry, Multidisciplinary

Nanoscale porous organic polymers for drug delivery and advanced cancer theranostics

Nem Singh et al.

Summary: Finding a personalized nano theranostics solution for cancer diagnosis and therapy is a top challenge in current medicinal science. Porous organic polymers (POPs) show remarkable advantages for cancer theranostics due to their specific physicochemical characteristics. Both crystalline and non-crystalline POPs, such as covalent organic frameworks (COFs), have shown potential applications across various research areas. Early research on nanoscale POPs for theranostics has demonstrated promising applications in drug loading, targeted delivery, stimuli-responsive release, cancer imaging, and combination therapy.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Multidisciplinary

Engineering Covalent Organic Framework Membranes

Guangwei He et al.

Summary: Membrane technology is increasingly important for sustainable development, with COFs emerging as potent membrane materials due to their unique structure and properties compared to polymers, zeolites, and MOFs. COFs have highly tunable pore structure, high porosity, and excellent stability, making them ideal for advanced membrane applications. Various engineering approaches towards COF membranes, such as reticular engineering, crystal engineering, and nanochannel engineering, are actively being explored to enhance their separation efficiency and stability.

ACCOUNTS OF MATERIALS RESEARCH (2021)

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Article Nanoscience & Nanotechnology

Band Gap Engineering in Vinylene-Linked Covalent Organic Frameworks for Enhanced Photocatalytic Degradation of Organic Contaminants and Disinfection of Bacteria

Xiao-Rong Chen et al.

Summary: This study introduces vinylene-linked COFs for photocatalytic degradation of organic contaminants and disinfection of bacteria, showing enhanced activity and stability due to improved delocalization of p-electrons. This innovative design expands the application of COFs in photocatalysis.

ACS APPLIED BIO MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Smart covalent organic frameworks: dual channel sensors for acids and bases

Jia Xin Koh et al.

Summary: Integration of carboxylic electrolyte sites onto sp(2) carbon covalent organic frameworks results in highly luminescent sensors that exhibit dual channel responsiveness and can detect acids, bases, and the neurotransmitter dopamine via ultrafast electron transfer under ambient conditions.

CHEMICAL COMMUNICATIONS (2021)

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Review Chemistry, Physical

Metal/covalent-organic frameworks for electrochemical energy storage applications

Jun Chu et al.

Summary: Metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs) have emerged as promising candidates for electrode materials in energy storage systems, offering high surface area, organized channels, and multiple functions for various applications. Their derivatives often possess high conductivity and diverse nanoarchitecture, making them suitable for high-performance electrodes. Future developments include addressing remaining challenges and advancing EES applications further.

ECOMAT (2021)

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Article Chemistry, Multidisciplinary

18.1% single palladium atom catalysts on mesoporous covalent organic framework for gas phase hydrogenation of ethylene

Chun-Te Kuo et al.

Summary: This study successfully synthesized a mesoporous imine-linked covalent organic framework with a high loading of single Pd atoms, demonstrating their excellent catalytic activity for ethylene hydrogenation. Mesoporous COFs provide numerous identical metal binding sites, making them suitable for immobilizing metal single atoms and using them in gas-phase catalytic applications.

CELL REPORTS PHYSICAL SCIENCE (2021)

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Review Materials Science, Biomaterials

Tuning the physicochemical properties of reticular covalent organic frameworks (COFs) for biomedical applications

Chunyang Liao et al.

Summary: The biomedical applications of COFs, based on diverse crystalline porous structures and well-customized functionalities, have become increasingly attractive. However, clinical translation faces challenges such as low biocompatibility and poor selectivity. Tailored engineering of COFs could provide a promising solution to overcome these obstacles and open up new possibilities for their clinical use.

JOURNAL OF MATERIALS CHEMISTRY B (2021)

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Review Chemistry, Physical

Photothermal catalytic CO2 reduction over nanomaterials

Fan Zhang et al.

Summary: Harnessing solar power to convert carbon dioxide into fuels through photothermal catalytic conversion offers an effective, economical, and eco-friendly solution. Nanocatalysts, design strategies, and photothermal catalytic mechanisms play key roles in this process, with potential for future developments and challenges in the research field.

CHEM CATALYSIS (2021)

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Article Chemistry, Multidisciplinary

A covalent organic framework-based nanoagent for H2S-activable phototherapy against colon cancer

Jie Feng et al.

Summary: In this study, a Cu(ii)-porphyrin-derived nanoscale COF was developed for PDT against H2S-enriched colon tumors, with controllable singlet oxygen release. The in situ generated CuS can also be used synchronously as a photothermal agent for PTT.

CHEMICAL COMMUNICATIONS (2021)

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Review Chemistry, Multidisciplinary

Electrochemically active site-rich nanocomposites of two-dimensional materials as anode catalysts for direct oxidation fuel cells: new age beyond graphene

Kashmiri Baruah et al.

Summary: Direct oxidation fuel cell (DOFC) is considered a green alternative to fossil fuels with economic viability and high efficiency, with the anode catalyst being a critical component. Recently, there has been increased interest in using 2D materials as anode catalysts due to their excellent electrochemical properties, offering potential solutions to challenges in DOFC development.

NANOSCALE ADVANCES (2021)

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Article Environmental Sciences

High-Efficiency Photoenhanced Extraction of Uranium from Natural Seawater by Olefin-Linked Covalent Organic Frameworks

Wei-Rong Cui et al.

Summary: This study introduces a method of extracting uranium from seawater using COFs and proposes a novel COF (PT-BN-AO) with antibiofouling activity and enhanced uranium extraction capacity. The new COF demonstrates superior photocatalytic and photoelectric properties, increasing the uranium extraction capacity.

ACS ES&T WATER (2021)

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Review Chemistry, Multidisciplinary

Reticular design and crystal structure determination of covalent organic frameworks

Ha L. Nguyen

Summary: Reticular chemistry of covalent organic frameworks (COFs) focuses on linking discrete organic building units into extended structures through strong covalent bonds. Over the past decade, there has been rapid development in COF chemistry in terms of structural diversity and applications. Understanding the concept of reticular chemistry is essential for researching COFs and correlating their geometric structures and practical applications.

CHEMICAL SCIENCE (2021)

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Review Nanoscience & Nanotechnology

Nanomaterials for cascade promoted catalytic cancer therapy

Zongrui Tong et al.

Summary: Catalytic therapy using special substances at tumor sites is a promising approach to achieve tumor-specific treatment or enhance the efficacy of other treatments. Utilizing nanomaterials and cascade strategies can significantly improve the effectiveness of catalytic therapy, presenting important implications for cancer treatment.

VIEW (2021)

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Article Chemistry, Multidisciplinary

Ultrathin functionalized covalent organic framework nanosheets for tumor-targeted photodynamic therapy

Peng Gao et al.

Summary: A modification-facilitated exfoliation strategy was developed for the preparation of ultrathin 2D functionalized covalent organic framework nanosheets (COF NSs) in a single step. The hyaluronic acid-functionalized ultrathin porphyrin COF NSs with enhanced reactive oxygen species (ROS) generation effect were prepared for tumor-targeted photodynamic therapy.

CHEMICAL COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Probe metal binding mode of imine covalent organic frameworks: cycloiridation for (photo)catalytic hydrogen evolution from formate

Jiyun Hu et al.

Summary: Metalation of covalent organic frameworks (COFs) is a critical strategy for advanced applications, with this study showing that imine-based COFs can readily chelate transition metals through cyclometalation, leading to more efficient catalytic hydrogen evolution. This work paves the way for exploring functional cyclometallated COFs beyond catalysis.

CHEMICAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Selenium-engineered covalent organic frameworks for high-efficiency and long-acting cancer therapy

Xiuyan Wan et al.

Summary: A novel porphyrin-containing covalent organic framework (COF) was synthesized for decorating selenium nanoparticles (Se NPs) via in situ reduction. Selenium nanoparticle-mediated therapy (SeT) was combined with photodynamic therapy (PDT) to enhance anticancer effects and address the limitations of PDT.

CHEMICAL COMMUNICATIONS (2021)

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Article Chemistry, Physical

Highly dispersed Ru nanoparticles on a bipyridine-linked covalent organic framework for efficient photocatalytic CO2 reduction

Ziling Liu et al.

Summary: The study successfully confines highly dispersed Ru nanoparticles in a photosensitizing COF, constructing composites with significantly enhanced activity for converting CO2 into valuable hydrocarbons efficiently.

SUSTAINABLE ENERGY & FUELS (2021)

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Article Chemistry, Physical

Highly active ultrafine Pd NPs confined in imine-linked COFs for nitrobenzene hydrogenation

Chunzhi Li et al.

Summary: The preparation and stabilization of ultrafine metal nanoparticles (NPs) are challenging but important. In this study, ultrafine Pd NPs were successfully stabilized on an imine-linked covalent organic framework (COF), showing high catalytic activity in hydrogenation. The COF demonstrated superior stability and prevented aggregation of the ultrafine Pd NPs.

CATALYSIS SCIENCE & TECHNOLOGY (2021)

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Article Chemistry, Physical

Metal-doped bipyridine linked covalent organic framework films as a platform for photoelectrocatalysts

Tomoya Hosokawa et al.

Summary: Covalent organic frameworks (COFs) have attracted attention as novel photofunctional materials due to their wide-range visible-light absorption and ability to support various metals. Metal-doped COF films were synthesized and Cu atoms were found to serve as active catalytic sites for the photoinduced oxygen reduction reaction (ORR), showing a significantly higher photocurrent compared to undoped COF.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary

Acid-triggered interlayer sliding of two-dimensional copper(i)-organic frameworks: more metal sites for catalysis

Hou-Gan Zhou et al.

Summary: In this study, a pair of isostructural 2D copper(i) organic frameworks with different interlayer stacking structures were successfully prepared by combining the chemistry of MOFs and COFs. The variation in interlayer stacking significantly influences their functionality, including porosity, chemical stability, and catalytic activities. Additionally, a structure transformation between the two frameworks was achieved by a simple addition of trifluoroacetic acid, resulting in in situ acceleration of adoption rate, which is uncommon in 2D MOFs and COFs.

CHEMICAL SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Multifunctional metal-organic framework heterostructures for enhanced cancer therapy

Jintong Liu et al.

Summary: Metal-organic frameworks (MOFs) are a class of molecular crystalline materials that can hierarchically integrate nanoparticles and/or biomolecules, enabling multifunctionality. Their benefits in cancer therapy lie in enhancing catalytic capacity of nanoparticles and retaining biological activity of biomolecules within intracellular environments.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Second near-infrared photothermal materials for combinational nanotheranostics

Cheng Xu et al.

Summary: Second near-infrared photothermal therapy (NIR-II PTT) has advantages of deeper penetration and less toxicity, but faces challenges of suboptimal photothermal conversion and limited therapeutic efficacy. To improve efficacy, multifunctional NIR-II photothermal inorganic or organic materials have been developed for combination with other therapeutic modalities.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Physical

CsPbBr3/Cs4PbBr6 perovskite@COF nanocomposites for visible-light-driven photocatalytic applications in water

Prachi Kour et al.

Summary: The study successfully synthesized all-inorganic CsPbBr3/Cs4PbBr6 perovskite@COF nanocomposites, which exhibit relatively stable crystalline properties and efficient photocatalytic degradation of Methyl Orange. The material shows a high photodegradation rate and can be recycled for three to six cycles.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Chemistry, Multidisciplinary

Recent progress in photosensitizers for overcoming the challenges of photodynamic therapy: from molecular design to application

Xueze Zhao et al.

Summary: This review summarizes recent progress in developing photosensitizers (PSs) for photodynamic therapy, including enhanced tolerance, improved selectivity, and deep tissue applicability. PSs are classified based on molecular design and application, with strategies for designing and future perspectives briefly outlined.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Physical

Development of proficient photocatalytic systems for enhanced photocatalytic reduction of carbon dioxide

Mufeedah Muringa Kandy et al.

Summary: Global warming is a major challenge in the 21st century, with the unrestricted release of CO2 into the atmosphere. Utilizing solar energy to scavenge CO2 and convert it into useful products offers a dual beneficial approach. While significant advancements have been made in research, the synthesis of a stable photocatalyst remains a challenge, along with the need for more advanced photocatalytic reactors equipped with solar concentrators.

SUSTAINABLE ENERGY & FUELS (2021)

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Review Chemistry, Multidisciplinary

Covalent organic frameworks: an ideal platform for designing ordered materials and advanced applications

Ruoyang Liu et al.

Summary: Covalent organic frameworks provide a platform for integrating organic units into ordered polymers, allowing for pre-designed structures and enhanced capabilities in designing organic materials. The progress in COF design and exploration has laid a foundation for the field, demonstrating potential in developing unique organic materials. By analyzing historical developments, understanding structural components and functional design strategies, a clearer picture of COFs' materials and applications emerges, revealing principles for designing unique functions inherent to structures.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Fundamentals and applications of photo-thermal catalysis

Diego Mateo et al.

Summary: Photo-thermal catalysis utilizes light as an energy source to enhance reaction rates and change selectivity patterns through the synergistic combination of photo- and thermo-chemical contributions of sunlight. This review discusses the fundamentals of localized surface plasmon resonance (LSPR) to explain the photo-thermal effect, describes different mechanistic pathways, and proposes material design strategies to improve photo-thermal performance towards the goal of wide implementation in the production of synthetic fuels and chemicals.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Pharmacology & Pharmacy

Delivery of Nanoconstructs in Cancer Therapy: Challenges and Therapeutic Opportunities

Wen Shang Saw et al.

Summary: Nanoconstructs are widely used to overcome the limitations of conventional cancer therapy, but face challenges in delivering sufficient drugs to tumors. Current opportunities focus on improving biodistribution, tumor penetration, and drug accumulation. The choice of administration route can enhance the effectiveness of delivery systems, with potential for successful cancer treatments.

ADVANCED THERAPEUTICS (2021)

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Review Pharmacology & Pharmacy

Inorganic Nanomaterials for Photothermal-Based Cancer Theranostics

Huang Wen et al.

Summary: This review article first summarizes the methods for synthesizing inorganic photothermal agents and their in vitro and in vivo evaluations, followed by a description of a clinical trial using an inorganic PTA. The final part of the review examines the challenges and possibilities for successful translation of inorganic PTAs from the laboratory to the clinic.

ADVANCED THERAPEUTICS (2021)

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Article Chemistry, Multidisciplinary

Construction of Donor-Acceptor Heterojunctions in Covalent Organic Framework for Enhanced CO2 Electroreduction

Qiao Wu et al.

Summary: The TT-Por(Co)-COF, containing donor-acceptor heterojunctions, exhibits enhanced performance in electrocatalytic reduction of carbon dioxide to produce CO, thanks to its improved charge transfer capability and large amount of accessible active sites. This study demonstrates that integrating donor-acceptor heterojunctions in COFs can facilitate electron transfer and generate high current densities for CO2RR.

SMALL (2021)

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Review Chemistry, Multidisciplinary

Optoelectronic processes in covalent organic frameworks

Niklas Keller et al.

Summary: COFs are crystalline porous materials constructed from molecular building blocks using diverse linkage chemistries, allowing for tailor-made design and a variety of building blocks for different functionalities. They have been integrated with various building blocks for applications in optoelectronics, semiconductors, sensors, photocatalysts, supercapacitors, batteries, and more.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Multidisciplinary

Covalent Organic Frameworks: Chemical Approaches to Designer Structures and Built-In Functions

Xinyi Chen et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Review Chemistry, Multidisciplinary

Coupling of Solar Energy and Thermal Energy for Carbon Dioxide Reduction: Status and Prospects

Zhou-jun Wang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

A heteropore covalent organic framework for adsorptive removal of Cd(II) from aqueous solutions with high efficiency

Na Liu et al.

CHINESE CHEMICAL LETTERS (2020)

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Review Materials Science, Multidisciplinary

Product selectivity of photocatalytic CO2 reduction reactions

Junwei Fu et al.

MATERIALS TODAY (2020)

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Review Chemistry, Physical

Engineering Self-Supported Noble Metal Foams Toward Electrocatalysis and Beyond

Ran Du et al.

ADVANCED ENERGY MATERIALS (2020)

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Review Chemistry, Multidisciplinary

Present and Future of Surface-Enhanced Raman Scattering

Judith Langer et al.

ACS NANO (2020)

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Article Chemistry, Multidisciplinary

Developing Luminescent Ratiometric Thermometers Based on a Covalent Organic Framework (COF)

Anna M. Kaczmarek et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

2D and 3D Porphyrinic Covalent Organic Frameworks: The Influence of Dimensionality on Functionality

Yi Meng et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Covalent Organic Framework for Improving Near-Infrared Light Induced Fluorescence Imaging through Two-Photon Induction

Jin-Yue Zeng et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Engineering, Environmental

Highly dispersed gold nanoparticles anchoring on post-modified covalent organic framework for catalytic application

Qing-Pu Zhang et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Review Chemistry, Multidisciplinary

A Theory/Experience Description of Support Effects in Carbon-Supported Catalysts

Iann C. Gerber et al.

CHEMICAL REVIEWS (2020)

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Article Chemistry, Multidisciplinary

One-Pot Fabrication of Pd Nanoparticles@Covalent-Organic-Framework-Derived Hollow Polyamine Spheres as a Synergistic Catalyst for Tandem Catalysis

Xinyi Yang et al.

CHEMISTRY-A EUROPEAN JOURNAL (2020)

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Article Chemistry, Multidisciplinary

Design, Synthesis and Characterization of Nickel-Functionalized Covalent Organic Framework NiCl@RIO-12 for Heterogeneous Suzuki-Miyaura Catalysis

Renata A. Maia et al.

CHEMISTRY-A EUROPEAN JOURNAL (2020)

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Article Chemistry, Multidisciplinary

Two-Dimensional (2D) Covalent Organic Framework as Efficient Cathode for Binder-free Lithium-Ion Battery

Chang-Jiang Yao et al.

CHEMSUSCHEM (2020)

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Article Biochemical Research Methods

Aptamer-gold nanoparticle doped covalent organic framework followed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for selective enrichment and detection of human insulin

Kun Ge et al.

JOURNAL OF CHROMATOGRAPHY A (2020)

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Review Biotechnology & Applied Microbiology

Future Applications of MXenes in Biotechnology, Nanomedicine, and Sensors

Aleksandra Szuplewska et al.

TRENDS IN BIOTECHNOLOGY (2020)

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Review Materials Science, Multidisciplinary

Hot in Plasmonics: Temperature-Related Concepts and Applications of Metal Nanostructures

Christian Kuppe et al.

ADVANCED OPTICAL MATERIALS (2020)

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Review Chemistry, Multidisciplinary

Microporous Metal-Organic Framework Materials for Gas Separation

Rui-Biao Lin et al.

CHEM (2020)

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Article Nanoscience & Nanotechnology

Proton-Triggered Fluorescence Switching in Self-Exfoliated Ionic Covalent Organic Nanosheets for Applications in Selective Detection of Anions

Harpreet Singh et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

Construction of Magnetic Covalent Organic Frameworks with Inherent Hydrophilicity for Efficiently Enriching Endogenous Glycopeptides in Human Saliva

Yonglei Wu et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

Comprehensive Structural and Microscopic Characterization of an Azine-Triazine-Functionalized Highly Crystalline Covalent Organic Framework and Its Selective Detection of Dichloran and 4-Nitroaniline

Prasenjit Das et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

New Ag-Doped COF Catalytic Amplification Aptamer Analytical Platform for Trace Small Molecules with the Resonance Rayleigh Scattering Technique

Siqi Pan et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Review Chemistry, Multidisciplinary

Porous Carbons: Structure-Oriented Design and Versatile Applications

Wenjie Tian et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Exfoliated Mesoporous 2D Covalent Organic Frameworks for High-Rate Electrochemical Double-Layer Capacitors

Yusran Yusran et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Analytical

Synthesis of a pH-Responsive Functional Covalent Organic Framework via Facile and Rapid One-Step Postsynthetic Modification and Its Application in Highly Efficient N1-Methyladenosine Extraction

Yu-Fang Ma et al.

ANALYTICAL CHEMISTRY (2020)

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Article Chemistry, Multidisciplinary

Supramolecular Surface Charge Regulation in Ionic Covalent Organic Nanosheets: Reversible Exfoliation and Controlled Bacterial Growth

Arindam Mal et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Redox-Active Two-Dimensional Covalent Organic Frameworks (COFs) for Selective Reductive Separation of Valence-Variable, Redox-Sensitive and Long-Lived Radionuclides

Yang Li et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Embedding Ultrasmall Au Clusters into the Pores of a Covalent Organic Framework for Enhanced Photostability and Photocatalytic Performance

Yang Deng et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Amidation, Esterification, and Thioesterification of a Carboxyl-Functionalized Covalent Organic Framework

Lei Guo et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Semiconductor/Covalent-Organic-Framework Z-Scheme Heterojunctions for Artificial Photosynthesis

Mi Zhang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Physical

Remarkably catalytic activity in reduction of 4-nitrophenol and methylene blue by Fe3O4@COF supported noble metal nanoparticles

Yulong Xu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Engineering, Environmental

Boosting visible-light hydrogen evolution of covalent-organic frameworks by introducing Ni-based noble metal-free co-catalyst

Hong Dong et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Review Chemistry, Multidisciplinary

Covalent Organic Frameworks: Design, Synthesis, and Functions

Keyu Geng et al.

CHEMICAL REVIEWS (2020)

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Article Chemistry, Physical

Fabrication of a New Corrole-Based Covalent Organic Framework as a Highly Efficient and Selective Chemosensor for Heavy Metal Ions

Yanjie Li et al.

CHEMISTRY OF MATERIALS (2020)

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Review Chemistry, Multidisciplinary

Covalent Organic Frameworks (COFs) for Cancer Therapeutics

Qun Guan et al.

CHEMISTRY-A EUROPEAN JOURNAL (2020)

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Review Chemistry, Multidisciplinary

Recent Advances in Covalent Organic Frameworks for Catalysis

Jianguo Liu et al.

CHEMISTRY-AN ASIAN JOURNAL (2020)

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Article Engineering, Environmental

Utilization of Ag nanoparticles anchored in covalent organic frameworks for mercury removal from acidic waste water

Longlong Wang et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Twist Building Blocks from Planar to Tetrahedral for the Synthesis of Covalent Organic Frameworks

Chao Gao et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Integrating Suitable Linkage of Covalent Organic Frameworks into Covalently Bridged Inorganic/Organic Hybrids toward Efficient Photocatalysis

Hou Wang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Competition between CO2 Reduction and Hydrogen Evolution on a Gold Electrode under Well-Defined Mass Transport Conditions

Akansha Goyal et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Applied

Covalent organic framework with bidentate ligand sites as reliable fluorescent sensor for Cu2+

Chao Cui et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2020)

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Article Nanoscience & Nanotechnology

Covalent organic frameworks bearing pillar[6]arene-reduced Au nanoparticles for the catalytic reduction of nitroaromatics

Xiaoping Tan et al.

NANOTECHNOLOGY (2020)

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Article Chemistry, Organic

Covalent Organic Framework as a Heterogeneous Ligand for the Regioselective Oxidative Heck Reaction

Jiyao Han et al.

ORGANIC LETTERS (2020)

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Article Chemistry, Multidisciplinary

Cobalt-containing covalent organic frameworks for visible light-driven hydrogen evolution

Jian Wang et al.

SCIENCE CHINA-CHEMISTRY (2020)

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Article Chemistry, Multidisciplinary

Phosphine-Based Covalent Organic Framework for the Controlled Synthesis of Broad-Scope Ultrafine Nanoparticles

Rao Tao et al.

SMALL (2020)

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Article Multidisciplinary Sciences

Nitrogen-rich covalent organic frameworks with multiple carbonyls for high-performance sodium batteries

Ruijuan Shi et al.

NATURE COMMUNICATIONS (2020)

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Article Chemistry, Physical

Integration of Strong Electron Transporter Tetrathiafulvalene into Metalloporphyrin-Based Covalent Organic Framework for Highly Efficient Electroreduction of CO2

Qiao Wu et al.

ACS ENERGY LETTERS (2020)

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Article Chemistry, Physical

CuO grafted triazine functionalized covalent organic framework as an efficient catalyst for C-C homo coupling reaction

Sabuj Kanti Das et al.

MOLECULAR CATALYSIS (2020)

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Review Chemistry, Multidisciplinary

Prospects of organic electrode materials for practical lithium batteries

Yong Lu et al.

NATURE REVIEWS CHEMISTRY (2020)

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Article Nanoscience & Nanotechnology

In Silico Discovery of Covalent Organic Frameworks for Carbon Capture

Kathryn S. Deeg et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Review Nanoscience & Nanotechnology

Covalent Organic Frameworks: Emerging Organic Solid Materials for Energy and Electrochemical Applications

Kaiqiang Zhang et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Multidisciplinary

Divergent Chemistry Paths for 3D and 1D Metallo-Covalent Organic Frameworks (COFs)

Hai-Sen Xu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

A Stable and Conductive Metallophthalocyanine Framework for Electrocatalytic Carbon Dioxide Reduction in Water

Ning Huang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Unveiling the Local Structure of Palladium Loaded into Imine-Linked Layered Covalent Organic Frameworks for Cross-Coupling Catalysis

Ignacio Romero-Muniz et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Review Chemistry, Multidisciplinary

Metal-Covalent Organic Frameworks (MCOFs): A Bridge Between Metal-Organic Frameworks and Covalent Organic Frameworks

Jinqiao Dong et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Multidisciplinary

Homochiral Covalent Organic Frameworks for Asymmetric Catalysis

Hui-Chao Ma et al.

CHEMISTRY-A EUROPEAN JOURNAL (2020)

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Review Polymer Science

COFs-based Porous Materials for Photocatalytic Applications

Xun-Liang Hu et al.

CHINESE JOURNAL OF POLYMER SCIENCE (2020)

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Review Chemistry, Organic

Recent Advances in Four-Coordinated Planar Cobalt Catalysis in Organic Synthesis

Takuya Michiyuki et al.

ASIAN JOURNAL OF ORGANIC CHEMISTRY (2020)

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Article Energy & Fuels

Advancement of Platinum (Pt)-Free (Non-Pt Precious Metals) and/or Metal-Free (Non-Precious-Metals) Electrocatalysts in Energy Applications: A Review and Perspectives

Mahesh Datt Bhatt et al.

ENERGY & FUELS (2020)

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Article Chemistry, Inorganic & Nuclear

General Strategy to Fabricate Metal-Incorporated Pyrolysis-Free Covalent Organic Framework for Efficient Oxygen Evolution Reaction

Zhi Gao et al.

INORGANIC CHEMISTRY (2020)

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Review Green & Sustainable Science & Technology

Photocatalytic degradation of organic pollutants using TiO2-based photocatalysts: A review

Dongjie Chen et al.

JOURNAL OF CLEANER PRODUCTION (2020)

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Article Chemistry, Multidisciplinary

Donor-acceptor type [4+3] covalent organic frameworks: sub-stoichiometric synthesis and photocatalytic application

Qiaobo Liao et al.

SCIENCE CHINA-CHEMISTRY (2020)

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Article Chemistry, Multidisciplinary

Metalation of Catechol-Functionalized Defective Covalent Organic Frameworks for Lewis Acid Catalysis

Yanan Shi et al.

SMALL (2020)

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Review Chemistry, Multidisciplinary

Recent Progress in Metal-Free Covalent Organic Frameworks as Heterogeneous Catalysts

Yongfeng Zhi et al.

SMALL (2020)

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Review Chemistry, Applied

Covalent Organic Frameworks in Separation

Saikat Das et al.

ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 11 (2020)

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Article Multidisciplinary Sciences

Single crystal of a one-dimensional metallo-covalent organic framework

Hai-Sen Xu et al.

NATURE COMMUNICATIONS (2020)

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Article Chemistry, Physical

Covalent Triazine Framework Confined Copper Catalysts for Selective Electrochemical CO2 Reduction: Operando Diagnosis of Active Sites

Lushan Ma et al.

ACS CATALYSIS (2020)

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Article Chemistry, Multidisciplinary

A Nickel-Doped Dehydrobenzoannulene-Based Two-Dimensional Covalent Organic Framework for the Reductive Cleavage of Inert Aryl C-S Bonds

W. Karl Haug et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

High-Flux Vertically Aligned 2D Covalent Organic Framework Membrane with Enhanced Hydrogen Separation

Hongwei Fan et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Construction of Covalent Organic Frameworks via Three-Component One-Pot Strecker and Povarov Reactions

Xue-Tian Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Metal-Free Thiophene-Sulfur Covalent Organic Frameworks: Precise and Controllable Synthesis of Catalytic Active Sites for Oxygen Reduction

Daohao Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Multidisciplinary

Connecting Microscopic Structures, Mesoscale Assemblies, and Macroscopic Architectures in 3D-Printed Hierarchical Porous Covalent Organic Framework Foams

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