Covalent organic frameworks (COFs) for electrochemical applications

Chemical Society Reviews, Год журнала: 2021, Номер 50(12), С. 6871 - 6913

Опубликована: Янв. 1, 2021

This review article summarizes the design principles and strategies for synthesis of functional COFs, with a special focus on their potential electrochemical applications.

Язык: Английский

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

Angewandte Chemie International Edition, Год журнала: 2020, Номер 59(33), С. 13722 - 13733

Опубликована: Апрель 9, 2020

Abstract Many sophisticated chemical and physical properties of porous materials strongly rely on the presence metal ions within structures. Whereas homogeneous distribution metals is conveniently realized in metal–organic frameworks (MOFs), limited stability potentially restricts their practical implementation. From that perspective, development metal–covalent organic (MCOFs) may address these shortcomings by incorporating active species atop highly stable COF backbones. This Minireview highlights examples MCOFs tackle important issues from design, synthesis, characterization to cutting‐edge applications.

Язык: Английский

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Chiral covalent organic frameworks: design, synthesis and property

Chemical Society Reviews, Год журнала: 2020, Номер 49(17), С. 6248 - 6272

Опубликована: Янв. 1, 2020

Owing to the unique structural features and facile tunability of subcomponents channels, chiral COFs show great potential in heterogeneous catalysis, enantioselective separation, recognition.

Язык: Английский

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

Nature Communications, Год журнала: 2021, Номер 12(1)

Опубликована: Янв. 4, 2021

Abstract Covalent organic frameworks (COFs) are promising materials for advanced molecular-separation membranes, but their wide nanometer-sized pores prevent selective gas separation through molecular sieving. Herein, we propose a MOF-in-COF concept the confined growth of metal-organic framework (MOFs) inside supported COF layer to prepare membranes. These membranes feature unique micro/nanopore network, presumably due formation MOFs as pearl string-like chain unit cells in 1D channel 2D COFs. The exhibit an excellent hydrogen permeance (>3000 GPU) together with significant enhancement selectivity over other gases. superior performance H 2 /CO and /CH 4 surpasses Robeson upper bounds, benefiting from synergy combining precise size sieving fast transport channels. synthesis different combinations COFs robust demonstrates versatility our design strategy.

Язык: Английский

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Covalent organic framework-based materials for energy applications

Energy & Environmental Science, Год журнала: 2020, Номер 14(2), С. 688 - 728

Опубликована: Ноя. 11, 2020

The recent progress in the synthesis and energy applications of covalent organic frameworks has been elaborated this review article.

Язык: Английский

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Nanoscale Covalent Organic Framework for Combinatorial Antitumor Photodynamic and Photothermal Therapy

ACS Nano, Год журнала: 2019, Номер 13(11), С. 13304 - 13316

Опубликована: Ноя. 5, 2019

Despite the excellent photodynamic and photothermal properties of organic molecular photosensitizers (PSs) agents (PTAs), such as porphyrin naphthalocyanine, their poor water solubility severely impedes biological applications. Covalent frameworks (COFs), an emerging class crystalline porous materials, possess free active end groups (bonding defects) large inner pores, which make them ideal type nanocarriers for loading hydrophobic PSs PTAs by both bonding defect functionalization (BDF) guest encapsulation approaches to obtain multifunctional nanomedicines PDT/PTT combination therapy. In this work, we report a nanoscale COF (NCOF) prepared via facile synthetic approach under ambient conditions. Furthermore, dual-modal therapeutic nanoagent, VONc@COF-Por (3), is successfully fabricated stepwise BDF processes. The covalently grafted porphyrinic PS (Por) noncovalently loaded naphthalocyanine PTA (VONc) are independently responsible PDT PTT functionalities nanoagent. Upon visible (red LED) NIR (808 nm laser) irradiation, (3) displayed high 1O2 generation conversion ability (55.9%), consequently providing combined effect on inhibiting MCF-7 tumor cell proliferation metastasis, was well evidenced in vitro vivo experiments. We believe that results obtained herein can significantly promote development NCOF-based biomedical

Язык: Английский

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

Journal of the American Chemical Society, Год журнала: 2020, Номер 142(15), С. 6872 - 6877

Опубликована: Март 28, 2020

In this study, we propose a new concept of vertically aligned 2D covalent organic framework (COF) layers forming membrane for efficient gas separation on the basis precise size exclusion. Gas transport takes place through COF interlayer space (typically 0.3-0.4 nm) rather than nanometer-sized pore apertures. Construction such unique architecture was implemented via in situ oriented growth COFs inside skeleton CoAl-layered double hydroxide (LDH) nanosheets. The resultant vertical COF-LZU1 exhibits high H2 permeance ∼3600 GPU together with desirable selectivity mixtures as H2/CO2 (31.6) and H2/CH4 (29.5), thus surpassing 2008 Robeson upper bounds. universality approach demonstrated by successfully producing two types high-quality membranes superior performance well outstanding running stability.

Язык: Английский

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Microporous framework membranes for precise molecule/ion separations

Chemical Society Reviews, Год журнала: 2020, Номер 50(2), С. 986 - 1029

Опубликована: Ноя. 23, 2020

Microporous framework membranes with well-defined micropore structure such as metal-organic and covalent organic hold great promise for the enormous challenging separations in energy environment fields.

Язык: Английский

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Organic molecular sieve membranes for chemical separations

Chemical Society Reviews, Год журнала: 2021, Номер 50(9), С. 5468 - 5516

Опубликована: Янв. 1, 2021

This review proposes the concept of organic molecular sieve membranes (OMSMs) and guiding principles for precise structure construction efficient process intensification OMSMs.

Язык: Английский

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The Chemistry of Reticular Framework Nanoparticles: MOF, ZIF, and COF Materials

Advanced Functional Materials, Год журнала: 2020, Номер 30(41)

Опубликована: Фев. 24, 2020

Abstract Nanoparticles have become a vital part of vast number established processes and products; they are used as catalysts, in cosmetics, even by the pharmaceutical industry. Despite this, however, reliable reproducible production functional nanoparticles for specific applications remains great challenge. In this respect, reticular chemistry provides methods connecting molecular building blocks to whose chemical composition, structure, porosity, functionality can be controlled tuned with atomic precision. Thus, allows translation green principle atom economy nanomaterials, giving rise multifunctional efficiency concept. This encourages design highly active nanomaterials maximizing integrated units while minimizing inactive components. State‐of‐the‐art research on nanoparticles—metal‐organic frameworks, zeolitic imidazolate covalent organic frameworks—is critically assessed beneficial features particular challenges that set apart from other nanoparticle material classes highlighted. Reviewing power chemistry, it is suggested unique possibility efficiently straightforwardly synthesize should guide synthesis customized future.

Язык: Английский

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