Covalent Organic Frameworks: Design, Synthesis, and Functions

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(16), P. 8814 - 8933

Published: Jan. 22, 2020

Covalent organic frameworks (COFs) are a class of crystalline porous polymers with permanent porosity and highly ordered structures. Unlike other polymers, significant feature COFs is that they structurally predesignable, synthetically controllable, functionally manageable. In principle, the topological design diagram offers geometric guidance for structural tiling extended polygons, polycondensation reactions provide synthetic ways to construct predesigned primary high-order Progress over past decade in chemistry these two aspects undoubtedly established base COF field. By virtue availability units diversity topologies linkages, have emerged as new field materials offer powerful molecular platform complex tailor-made functional development. Here we target comprehensive review field, historic overview survey advances topology reactions, illustrate features diversities, scrutinize development potential various functions through elucidating structure–function correlations based on interactions photons, electrons, holes, spins, ions, molecules, discuss key fundamental challenging issues need be addressed, predict future directions from chemistry, physics, perspectives.

Language: Английский

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Covalent Organic Frameworks: Chemistry beyond the Structure

Journal of the American Chemical Society, Journal Year: 2018, Volume and Issue: 141(5), P. 1807 - 1822

Published: Nov. 28, 2018

Covalent organic frameworks (COFs) represent a new field of rapidly growing chemical research that takes direct inspiration from diverse covalent bonds existing between atoms. The success linking atoms in two and three dimensions to construct extended framework structures moved the chemistry COFs beyond methodologies, highlighting possibility prospective applications. Although structure property relation has led fascinating properties, stability, processability scalability were some important challenges needed be overcome for their successful implementation. In this Perspective, we take closer look at growth mere supramolecular potential industrializable materials.

Language: Английский

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Advances in Conjugated Microporous Polymers

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(4), P. 2171 - 2214

Published: Jan. 28, 2020

Conjugated microporous polymers (CMPs) are a unique class of materials that combine extended π-conjugation with permanently skeleton. Since their discovery in 2007, CMPs have become established as an important subclass porous materials. A wide range synthetic building blocks and network-forming reactions offers enormous variety different properties structures. This has allowed to be developed for gas adsorption separations, chemical encapsulation, heterogeneous catalysis, photoredox light emittance, sensing, energy storage, biological applications, solar fuels production. Here we review the progress CMP research since its beginnings offer outlook where these might headed future. We also compare prospect against growing conjugated crystalline covalent organic frameworks (COFs).

Language: Английский

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Bulk COFs and COF nanosheets for electrochemical energy storage and conversion

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(11), P. 3565 - 3604

Published: Jan. 1, 2020

The current advances, structure-property relationship and future perspectives in covalent organic frameworks (COFs) their nanosheets for electrochemical energy storage (EES) conversion (EEC) are summarized.

Language: Английский

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

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 50(1), P. 120 - 242

Published: Dec. 7, 2020

Covalent organic frameworks offer a molecular platform for integrating units into periodically ordered yet extended 2D and 3D polymers to create topologically well-defined polygonal lattices built-in discrete micropores and/or mesopores.

Language: Английский

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Chemically stable polyarylether-based covalent organic frameworks

Nature Chemistry, Journal Year: 2019, Volume and Issue: 11(6), P. 587 - 594

Published: April 8, 2019

Language: Английский

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Designed Synthesis of a 2D Porphyrin‐Based sp²Carbon‐Conjugated Covalent Organic Framework for Heterogeneous Photocatalysis

Angewandte Chemie International Edition, Journal Year: 2019, Volume and Issue: 58(19), P. 6430 - 6434

Published: March 19, 2019

The construction of stable covalent organic frameworks (COFs) for various applications is highly desirable. Herein, we report the synthesis a novel two-dimensional (2D) porphyrin-based sp2 carbon-conjugated COF (Por-sp2 c-COF), which adopts an eclipsed AA stacking structure with Brunauer-Emmett-Teller surface area 689 m2 g-1 . Owing to C=C linkages, Por-sp2 c-COF shows high chemical stability under conditions, even harsh conditions such as 9 m HCl and NaOH solutions. Interestingly, can be used metal-free heterogeneous photocatalyst visible-light-induced aerobic oxidation amines imines. More importantly, in comparison imine-linked Por-COF, inherent equips it several advantages photocatalyst, including reusability photocatalytic performance. This clearly demonstrates that carbon-linked 2D COFs provide interesting platform photocatalysis.

Language: Английский

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Recent advances in MOF-based photocatalysis: environmental remediation under visible light

Inorganic Chemistry Frontiers, Journal Year: 2019, Volume and Issue: 7(2), P. 300 - 339

Published: Oct. 30, 2019

Highly photoactive MOFs can be engineered via various strategies for the purpose of extended visible light absorption, more efficient generation, separation and transfer charge carriers, as well good recyclability.

Language: Английский

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Conjugated polymers for visible-light-driven photocatalysis

Energy & Environmental Science, Journal Year: 2019, Volume and Issue: 13(1), P. 24 - 52

Published: Oct. 1, 2019

This review summarizes the recent advancements in π-conjugated polymers for various photocatalytic applications under visible light.

Language: Английский

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Two-dimensional semiconducting covalent organic frameworks via condensation at arylmethyl carbon atoms

Nature Communications, Journal Year: 2019, Volume and Issue: 10(1)

Published: June 6, 2019

Construction of organic semiconducting materials with in-plane π-conjugated structures and robustness through carbon-carbon bond linkages, alternatively as graphene analogs, is extremely desired for powerfully optoelectrical conversion. However, the poor reversibility sp2 carbon forming reactions makes them unavailable building high crystalline well-defined a self-healing process, such covalent frameworks (COFs). Here we report scalable solution-processing approach to synthesize family two-dimensional (2D) COFs trans-disubstituted C = linkages via condensation reaction at arylmethyl atoms on basis 3,5-dicyano-2,4,6-trimethylpyridine linear/trigonal aldehyde (i.e., 4,4″-diformyl-p-terphenyl, 4,4'-diformyl-1,1'-biphenyl, or 1,3,5-tris(4-formylphenyl)benzene) monomers. Such carbon-jointed-pyridinyl frameworks, featuring honeycomb-like surface areas, enable driving two half-reactions water splitting separately under visible light irradiation, comparable graphitic nitride (g-C3N4) derivatives.

Language: Английский

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