Related references
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Article
Chemistry, Inorganic & Nuclear
Yi Li et al.
Summary: We report two dynamic pillar layered metal-organic frameworks (MOFs) BUT-111 and BUT-112 for efficient purification of C2H4. The activated MOFs exhibit ultramicropores and reversed order adsorption behavior for C2H6 and C2H4, allowing highly purified C2H4 to be obtained in one step from the C2H6/C2H4 mixture. The degree of interpenetration in BUT-112 can be controlled by the synthetic temperature, enhancing the C2H4 purification effectively.
INORGANIC CHEMISTRY
(2023)
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Honglin Ma et al.
Summary: This study investigated the SHG response difference between two novel interpenetrated MOFs (M1 and M2) by performing first-principles calculations. The results showed that the structural transformation from M2 to M1 was energetically favorable, and M1 with the most tightly packed structure had the largest dielectric constant. The presence of the DMF guest had a small effect on the optical anisotropy of the system. Due to the different coordination environments of Zn atoms, M1 showed more significant optical anisotropy and a wider range of phase matchability compared to M2.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
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Wen Yao et al.
Summary: An etching-functionalization strategy was developed to construct a tannic-acid-functionalized MOF with a unique hollow-wall and 3D-ordered macroporous structure. This MOF can be further used as a precursor for the synthesis of cobalt supported on oxygen/nitrogen co-doped carbon composites with H-3DOM structures and hydrophilic surface. The resulting catalyst exhibits high electrocatalytic activity in the oxygen reduction reaction.
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(2023)
Article
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Matteo Orfano et al.
Summary: Gas-concentrating porous scintillating metal-organic frameworks are demonstrated for the detection of gas radionuclides, providing improved sensitivity compared to existing methods. The high porosity and scintillating properties of MOFs allow for the concentration of radioactive gases and the production of visible light. A hafnium-based MOF incorporating dicarboxy-9,10-diphenylanthracene as a scintillating ligand is shown to detect gas radionuclides. These findings support the use of scintillating porous MOFs as sensitive detectors for natural and anthropogenic radionuclides.
Review
Chemistry, Multidisciplinary
Haixia Zhong et al.
Summary: In this Review, the recent advances of two-dimensional conjugated metal-organic frameworks (2D c-MOFs) as electrocatalysts for electrochemical energy conversion are summarized. The advantages, chemical design principles, synthetic strategies, functional design, and applications in various electrochemical reactions are introduced. The strategies for structural design and property tuning to boost the catalytic performance, as well as the challenges to be overcome, are highlighted.
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Chemistry, Multidisciplinary
Naifang Liu et al.
Summary: A series of luminescent frameworks were synthesized by selectively combining AIE-linker H4TCPE and Zn2+. These complexes exhibit highly efficient multiphoton excited photoluminescence and third harmonic generation. The multiphoton absorption parameters of complex 1 are superior to other materials and the incorporation of pillar linkers greatly influences the multiphoton absorption performance of the frameworks.
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Liang Niu et al.
Summary: Metal-organic frameworks (MOFs) are porous materials with crystal lattices, which have attracted significant attention in the past two decades due to their exceptional specific surface area, tunable functionality, and versatile structures. This article summarizes the progress made in the synthesis and design of conductive MOFs, with particular focus on their application in electrochemical energy storage, specifically supercapacitors. The electronic and molecular aspects of the energy storage mechanism in supercapacitors with MOF electrodes are discussed, highlighting the advantages and limitations of conductive MOFs and inspiring new ideas for their development in supercapacitors.
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(2022)
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Chenxi Zhang et al.
Summary: This study demonstrates for the first time the band bending phenomenon in metal-organic frameworks (MOFs), achieved by integrating MOFs with metal oxides to form MOF composites. The resulting MOF composites show 56 to 42 times higher activities in photocatalytic H-2 production compared to pristine MOFs.
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Chu-Yao Zhong et al.
Summary: Developing biocompatible two-photon photoluminescence bio-probes is challenging. This study encapsulated single perovskite nanocrystals into silica nanoshells to prevent leakage and investigated their photoluminescence properties and potential for bio-imaging. The core-shell nanocrystals exhibited good two-photon absorption properties and emitted green light. They also demonstrated excellent biocompatibility and higher fluorescence intensity in cell imaging compared to the control group under 800 nm laser illumination.
CHEMICAL ENGINEERING JOURNAL
(2022)
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Engineering, Environmental
Deng You et al.
Summary: This study investigates the effect of ligand structure on the adsorption of Sb(V) by MOFs-based adsorbents. By synthesizing five different adsorbents with different ligands, the authors find that the adsorption performance is directly correlated with the utilization of accessible adsorption sites. The results show that La-MGs, with meta-substituted -COOH coordination and imidazole ring, achieve a site utilization rate of almost 92% and a state-of-the-art value of 896.5 mg/g for Sb(V) removal.
CHEMICAL ENGINEERING JOURNAL
(2022)
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Anastasiia Zalogina et al.
Summary: Multiphoton processes of absorption photoluminescence have found diverse applications ranging from threedimensional microfabrication to biological imaging. However, studying higher-order photoluminescence processes at subwavelength scales has been challenging due to their low efficiency. In this study, we demonstrate the observation of five-photon luminescence from a single subwavelength nanoantenna at room temperature, enabled by the Mie resonances. The interaction of Mie multipolar modes at the subwavelength scale enhances the efficiency of five-photon luminescence by at least 4 orders of magnitude.
Article
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Shuvo Jit Datta et al.
Summary: This study reports a highly efficient method for separating hydrogen sulfide and carbon dioxide from natural gas using mixed-matrix metal-organic framework membranes. The membranes, designed and constructed with specific structures, showed exceptional separation performance under practical working conditions. This approach has the potential to translate other key adsorbents into processable matrix.
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Chemistry, Multidisciplinary
Shengliang Li et al.
Summary: Researchers have developed a designed and synthesized fluorescent molecule (OFET) for in vivo mouse brain imaging using three-photon microscopy. The OFET molecule, integrated as water dispersible nanoparticles (OFET NPs), has high fluorescence brightness and maximum emission at 820 nm. Under 1720 nm excitation, OFET NPs exhibit a large three-photon action crosssection, more than twice that of commonly used SR101 dye. With the advantages of long excitation and emission wavelength, and high tissue penetration depth, OFET NPs show good deep-brain imaging performance.
Article
Chemistry, Physical
Zhihui Chen et al.
Summary: This study reports the efficient nonlinear absorption and refraction of CuFeTe2 nanosheets, which is attributed to the free carrier induced band filling effect.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
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Chemistry, Multidisciplinary
Mubin He et al.
Summary: This study proposes a method that combines skull optical clearing (SOC) technique and three-photon fluorescence microscopy (3PM) to overcome the scattering effects of the skull and brain tissue, enabling observation of deep microvasculature and neuronal structures. By using visible-NIR-II compatible skull optical clearing agents and a bright aggregation-induced emission (AIE) nanoprobe with large three-photon absorption cross section, the researchers achieved the largest cerebrovascular and neuronal imaging depth to date.
Article
Chemistry, Physical
Guangxu Lan et al.
Summary: This article introduces a metal-organic framework-based artificial enzyme called MOZ, which can integrate active metal centers, proximal amino acids, and cofactors to achieve efficient and selective catalytic reactions. The researchers designed two MOZ libraries to perform photocatalytic CO2 reduction and water oxidation reactions, and systematically optimized the activity and selectivity of these libraries by tuning the incorporated amino acids. By combining these optimized MOZs into a single system, they achieved complete artificial photosynthesis.
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Materials Science, Multidisciplinary
Yuning Liang et al.
Summary: In this study, the influence of the coordination numbers of metal-organic frameworks (MOFs) on their nonlinear optical (NLO) properties is investigated for the first time. Different coordination numbers of MOFs are synthesized using trifluoroacetic acid as an auxiliary agent and their NLO properties are tested. The results show that MOFs with high coordination numbers can effectively modulate their NLO absorption properties from saturable absorption to reverse saturable absorption by increasing the excitation intensity. First-principles calculations demonstrate that a change in the coordination numbers leads to a change in the charge transfer from metal to ligand, resulting in different NLO responses. MOFs with a high coordination number have potential applications in novel optical switches or logic gates.
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(2022)
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Peiyao Pan et al.
Summary: Control over the single-, two-, and three-photon excited fluorescence of metal nanoclusters has been achieved by exploiting the solvent effect. A luminous nanocluster was synthesized and its structure was determined. The results demonstrate that the solvent effect can not only control the fluorescence of the nanocluster, but also regulate its photoluminescence nature as single-, two-, and three-photon excited fluorescence.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Inorganic & Nuclear
Guangtong Hai et al.
Summary: This review provides a comprehensive summary of the recent advances in theoretical studies of metal-organic frameworks (MOFs), including the development of calculation methods and models. The review emphasizes the application of theoretical calculations in practical areas such as catalysis, gas separation, and energy storage. Challenges and limitations of theoretical calculations in MOFs are also discussed.
COORDINATION CHEMISTRY REVIEWS
(2022)
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Nanoscience & Nanotechnology
A. Knebel et al.
Summary: This critical Review discusses the molecular sieving behavior of metal-organic framework (MOF) and covalent organic framework (COF) membranes, which differs from classical zeolite membranes. MOFs and COFs offer synthetic access to a wide range of structures and tailor-made molecular gates. The controllable gas transport and compatibility with polymers make MOFs and COFs suitable for mixed-matrix membranes. The ability to react to stimuli allows for exploitation of the non-ideality of molecular sieving properties in a novel research direction.
NATURE NANOTECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Sebastian J. Weishaeupl et al.
Summary: This review presents recent advances in metal-organic frameworks (MOFs) and coordination polymers (CPs) regarding their response properties to multiphoton absorption (MPA). It covers the theoretical background of MPA absorbing linker molecules, the effect of excitonic coupling within a rigid framework assembly, and compares different scanning and non-scanning measurement techniques for two-photon absorption (TPA) spectroscopy. Additionally, it comprehensively presents the latest progress of linker-based MPA materials and their relationship with framework structure and MPA cross section.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
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Materials Science, Multidisciplinary
Hongjun Li et al.
Summary: The tunable nonlinear optical responses in a single nano-/micro-structure based on host-guest metal-organic framework materials were demonstrated, through encapsulating linear dye molecules into periodic one-dimensional channels. The highly ordered structures of MOFs impart spatial regulation on the linear dye molecules to realize orientation alignment and polarized anisotropy emission, leading to tunable NLO properties such as TPL, SHG, and THG by switching the incident excitation wavelength.
SCIENCE CHINA-MATERIALS
(2021)
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Nanoscience & Nanotechnology
Mayank Gupta et al.
Summary: This study investigates the impact of changes in the degree of interpenetration in metal-organic frameworks (MOFs) on their optical properties, demonstrating that the formation of hydrogen bond networks and interpenetration can significantly enhance absorption cross-sections and nonlinear optical coefficients.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Lin Zhang et al.
Summary: Two europium metal-organic frameworks, ZJU-23-Eu and ZJU-24-Eu, were selectively synthesized by adjusting solvent contents to modulate coordination modes. Their different spatial connectivity and symmetry result in varied fluorescence and second harmonic generation responses, with ZJU-23-Eu showing characteristic Eu3+ emission and ZJU-24-Eu exhibiting SHG response. These findings establish NLO models based on MOFs to design NLO devices with specific functionalities.
Review
Chemistry, Inorganic & Nuclear
Mayank Gupta et al.
Summary: The article emphasizes the significance of interpenetration in metal-organic framework structures and the influence of interpenetration degree on framework properties. It also discusses the structural transformations between different degrees of interpenetration and unusual structural changes in interpenetrated MOFs with varied dimensionalities and topologies.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Physical
Zhihui Chen et al.
Summary: The nonlinear optical properties of three 2D organic-inorganic hybrid perovskites were systematically studied, revealing similar anisotropy configurations for both two-photon and three-photon photoluminescence. However, the anisotropies of third harmonic generation signals strongly depend on the specific crystal structures of the individual flakes.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
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De-Jing Li et al.
Summary: This study presents the synthesis and characterization of two 3D porphyrinic MOFs, with one showing superior optical limiting performance compared to the other. The interpenetrated framework of the MOFs enhanced electron delocalization and transfer, leading to improved nonlinear optical properties. Adjusting the MOFs concentration and metalloporphyrin type optimized the optical limiting response in the MOFs/PDMS composites.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Inorganic & Nuclear
Yuhuan Qin et al.
Summary: Utilizing solar energy through photocatalysis is a promising strategy for addressing energy shortages and environmental issues. Metal-organic frameworks (MOFs) are emerging as a new type of photocatalytic material, with post-synthetic modifications (PSM) being a powerful strategy for fabricating photoactive MOFs based on existing MOFs. Various PSM strategies, including coordination on unsaturated metal sites, metalation on open coordinated sites, and ligand exchange, have been summarized for the development of photoactive MOFs.
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Review
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Yu Yan et al.
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