4.8 Article

Twistedly hydrophobic basis with suitable aromatic metrics in covalent organic networks govern micropollutant decontamination

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Verifying the Charge-Transfer Mechanism in S-Scheme Heterojunctions Using Femtosecond Transient Absorption Spectroscopy

Chang Cheng et al.

Summary: The S-scheme heterojunction is a promising photocatalyst that achieves separated charge carriers and sufficient redox ability. By constructing a series of CdS/PADT heterojunctions and using femtosecond transient absorption spectroscopy, an interfacial charge-transfer signal was detected, providing solid evidence for S-scheme charge transfer. The lifetime for interfacial charge transfer was calculated to be approximately 78.6 ps. Additionally, the S-scheme heterojunction photocatalysts exhibited higher photocatalytic conversion of 1,2-diols and H2 production rates compared to bare CdS.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

Article Chemistry, Multidisciplinary

Oxidation-Reduction Molecular Junction Covalent Organic Frameworks for Full Reaction Photosynthesis of H2O2

Jia-Nan Chang et al.

Summary: A covalent organic framework (TTF-BT-COF) with oxidation-reduction molecular junction has been synthesized through the covalent-coupling of tetrathiafulvalene and benzothiazole. This framework has visible-light absorption region, effective electron-hole separation efficiency, and photo-redox sites, enabling full reaction generation of H2O2.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

Article Chemistry, Multidisciplinary

Local Spatial Polarization Induced Efficient Charge Separation of Squaraine-Linked COF for Enhanced Photocatalytic Performance

Haijie Ben et al.

Summary: Local charge polarization induced by intrinsic zwitterionic resonance structure effectively redistributes and separates charge carriers in photocatalysts, leading to enhanced photocatalytic activities. The novel SQ-COF-1 catalyst with the largest local polarization exhibits superior visible-light-driven photocatalytic performance compared to SQ-COF-2, PDA-COF, and common polymeric carbon nitride photocatalyst. This work presents a promising protocol for engineering charge behavior to advance the design of high-performance photocatalytic materials in the future.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Engineering, Environmental

High electron transfer rate and efficiency on Fe0 modified by sulfidation and pre-magnetization for carbamazepine degradation by heterogeneous electro-Fenton in wide pH ranges

Yusi Tian et al.

Summary: In this study, the coupling of sulfidation and pre-magnetization was used for the modification of micron-Fe-0, resulting in pre-S/Fe-0 particles. These particles performed as highly active and recyclable catalysts for the degradation of carbamazepine using heterogeneous electro-Fenton process. The rate constant of the pre-S/Fe-0-EF process was significantly enhanced compared to conventional Fe-0-EF process, and it exhibited excellent performance in a wide pH range.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Multidisciplinary

Structural Regulation of Coupled Phthalocyanine-Porphyrin Covalent Organic Frameworks to Highly Active and Selective Electrocatalytic CO2 Reduction

Junjie Yuan et al.

Summary: This study combines different organic molecules in COFs, and experimental results show that one type of COF exhibits better CO2RR activity compared to another COF and individual organic molecules, mainly due to its larger pore size and conjugate structure, resulting in more efficient electron transfer and reaction kinetics.

ADVANCED MATERIALS (2022)

Article Engineering, Environmental

Oxygen and Chlorine Dual Vacancies Enable Photocatalytic O2 Dissociation into Monatomic Reactive Oxygen on BiOCl for Refractory Aromatic Pollutant Removal

Zhiping Yang et al.

Summary: This study demonstrates the photocatalytic dissociation of molecular oxygen (O-2) using BiOCl with oxygen and chlorine dual vacancies. The dual vacancies lengthen the O-O bond, resulting in rapid dissociation and formation of reactive oxygen. This approach is effective in degrading refractory pollutants and shows potential for environmental remediation.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Multidisciplinary Sciences

Reconstructed covalent organic frameworks

Weiwei Zhang et al.

Summary: This study presents a general and scalable method to prepare robust, highly crystalline imine COFs, which greatly enhances crystallinity and porosity through a reconstruction route. This nanoconfinement-assisted reconstruction strategy is a step towards programming function in organic materials through atomistic structural control.

NATURE (2022)

Article Chemistry, Multidisciplinary

Troger's Base Network Polymers of Intrinsic Microporosity (TB-PIMs) with Tunable Pore Size for Heterogeneous Catalysis

Ariana R. Antonangelo et al.

Summary: Heterogeneous catalysis combined with porous materials is essential in preparing value-added chemicals. This study presents the synthesis and characterization of tunable pore size microporous polymers and copolymers, which significantly improve the accessibility of catalytic sites and enhance conversions. The catalytic reaction is more efficient than the homogeneous counterpart, and the performance can be further improved by adding solvents to swell the pores.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

Article Engineering, Environmental

Thiadiazole-Based Covalent Organic Frameworks with a Donor-Acceptor Structure: Modulating Intermolecular Charge Transfer for Efficient Photocatalytic Degradation of Typical Emerging Contaminants

Yanghui Hou et al.

Summary: Covalent organic frameworks (COFs) have great potential as novel metal-free photocatalysts for decontaminating pollutants in water. This study demonstrates that intramolecular charge transfer within COFs can be modulated by constructing a donor-acceptor (D-A) structure, leading to improved photocatalytic performance. By integrating electron donor and acceptor units, two COFs (COF-TD1 and COF-TD2) were fabricated as visible-light-driven photocatalysts for degrading paracetamol. COF-TD1 exhibited superior photodegradation performance due to efficient electron-hole separation, and it could effectively degrade paracetamol even in complex water matrices. COF-TD1 also showed effective degradation of other emerging contaminants. The study provides an effective strategy for designing excellent COF-based photocatalysts.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Multidisciplinary Sciences

A synthetic antibiotic class overcoming bacterial multidrug resistance

Matthew J. Mitcheltree et al.

Summary: The lack of new medicines effective against antibiotic-resistant bacteria is a growing concern in global public health. The traditional semisynthesis method for finding new antibiotics is inadequate in combating rapidly evolving resistance threats, while fully synthetic routes designed properly can address this issue. Through structure-guided design and component-based synthesis, a new antibiotic named iboxamycin has been developed with exceptional potency and spectrum of activity against various bacteria.

NATURE (2021)

Article Multidisciplinary Sciences

Incidence and predictive biomarkers of Clostridioides difficile infection in hospitalized patients receiving broad-spectrum antibiotics

Cornelis H. van Werkhoven et al.

Summary: This study reports the incidence of Clostridioides difficile infection (CDI) and assesses potential clinical characteristics and biomarkers to predict CDI in 1,007 patients aged 50 and above receiving newly initiated antibiotic treatment.

NATURE COMMUNICATIONS (2021)

Article Multidisciplinary Sciences

A mechanochromic donor-acceptor torsional spring

Maximilian Raisch et al.

Summary: By designing a mechanochromic donor-acceptor torsional spring, force-dependent red-shifted absorption and emission spectra can be achieved, allowing for sensing and measuring forces, as well as visualizing force distributions in materials.

NATURE COMMUNICATIONS (2021)

Article Multidisciplinary Sciences

Photocatalytic water splitting with a quantum efficiency of almost unity

Tsuyoshi Takata et al.

NATURE (2020)

Article Chemistry, Multidisciplinary

Efficient hydrogen peroxide synthesis by metal-free polyterthiophene via photoelectrocatalytic dioxygen reduction

Wenjun Fan et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

Article Multidisciplinary Sciences

Enhanced antibiotic resistance development from fluoroquinolone persisters after a single exposure to antibiotic

Theresa C. Barrett et al.

NATURE COMMUNICATIONS (2019)

Article Multidisciplinary Sciences

Defect engineering of metal-oxide interface for proximity of photooxidation and photoreduction

Yangen Zhou et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2019)

Article Chemistry, Multidisciplinary

Benzotrithiophene-Based Covalent Organic Frameworks: Construction and Structure Transformation under lonothermal Condition

Hongtao Wei et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

Article Chemistry, Multidisciplinary

Control Interlayer Stacking and Chemical Stability of Two-Dimensional Covalent Organic Frameworks via Steric Tuning

Xiaowei Wu et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

Review Chemistry, Multidisciplinary

Recent advances in nanomaterials for water protection and monitoring

Rasel Das et al.

CHEMICAL SOCIETY REVIEWS (2017)

Article Multidisciplinary Sciences

Rates and mechanisms of bacterial mutagenesis from maximum-depth sequencing

Justin Jee et al.

NATURE (2016)

Article Multidisciplinary Sciences

Weaving of organic threads into a crystalline covalent organic framework

Yuzhong Liu et al.

SCIENCE (2016)

Article Chemistry, Multidisciplinary

3D Microporous Base-Functionalized Covalent Organic Frameworks for Size-Selective Catalysis

Qianrong Fang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2014)

Article Chemistry, Physical

Advances in Photofunctional Dendrimers for Solar Energy Conversion

Xiaohui Zhang et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2014)

Article Multidisciplinary Sciences

Unexpected link between an antibiotic, pannexin channels and apoptosis

Ivan K. H. Poon et al.

NATURE (2014)

Article Chemistry, Multidisciplinary

Charge Dynamics in A Donor-Acceptor Covalent Organic Framework with Periodically Ordered Bicontinuous Heterojunctions

Shangbin Jin et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2013)

Article Chemistry, Multidisciplinary

Enhancement of Chemical Stability and Crystallinity in Porphyrin-Containing Covalent Organic Frameworks by Intramolecular Hydrogen Bonds

Sharath Kandambeth et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2013)

Review Chemistry, Multidisciplinary

Covalent organic frameworks

Xiao Feng et al.

CHEMICAL SOCIETY REVIEWS (2012)

Review Chemistry, Multidisciplinary

Light-emitting polythiophenes

IF Perepichka et al.

ADVANCED MATERIALS (2005)

Article Chemistry, Organic

Planarized star-shaped oligothiophenes with enhanced π-electron delocalization

Y Nicolas et al.

ORGANIC LETTERS (2004)