Construction of Covalent Organic Frameworks via Multicomponent Reactions

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(3), С. 1475 - 1496

Опубликована: Янв. 16, 2023

Multicomponent reactions (MCRs) combine at least three reactants to afford the desired product in a highly atom-economic way and are therefore viewed as efficient one-pot combinatorial synthesis tools allowing one significantly boost molecular complexity diversity. Nowadays, MCRs no longer confined organic have found applications materials chemistry. In particular, can be used prepare covalent frameworks (COFs), which crystalline porous assembled from monomers exhibit broad range of properties applications. This synthetic approach retains advantages small-molecule MCRs, not only strengthening skeletal robustness COFs, but also providing additional driving forces for their crystallization, has been series robust COFs with diverse The present perspective article provides general background discusses types employed COF date, addresses related critical challenges future perspectives inspire MCR-based design new promote further progress this emerging field.

Язык: Английский

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Self-assembled stereomutation with supramolecular chirality inversion

Chemical Society Reviews, Год журнала: 2023, Номер 52(13), С. 4443 - 4487

Опубликована: Янв. 1, 2023

Supramolecular chirality inversion is closely related to biological and chemical self-assembly systems. This review highlights the fundamental principles, various strategies, promising applications of supramolecular inversion.

Язык: Английский

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CuS/Co-Ferrocene-MOF Nanocomposites for Photothermally Enhanced Chemodynamic Antibacterial Therapy

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(9), С. 10998 - 11007

Опубликована: Апрель 29, 2024

Infections caused by bacteria pose a serious threat to public health, and there is need for numerous innovative, antibiotic-free antimicrobial medicines. Herein, we describe the synthesis of CuS/Co-ferrocene-MOF (CuS/Co-Fc-MOF) nanocomposites, formed coupling CuS nanoparticles (NPs) two-dimensional (2D) Co-Fc-MOF nanosheets, that constitutes an platform capable near-infrared (NIR) photothermal promotion chemodynamic antibacterial. 2D CuS/Co-Fc-MOF nanocomposites consist nanosheets with dimensions approximately 100–200 nm thicknesses 13.1–15.6 nm, where NPs, size about 8 are excellently dispersed on surface nanosheets. The diverse valence states cobalt iron in enable them undergo Fenton-like reactions H2O2, thus generating highly oxidizing ·OH therapy (CDT). utilization local plasmonic resonance effect NPs enables enhancement CDT activity under laser irradiation. More importantly, can achieve rapid (15 min) NIR laser-assisted killing both S. aureus E. coli bacterial infection microenvironment compared Therefore, be employed as promising nanoagent promote photothermally augmented antibacterial therapy.

Язык: Английский

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Chiral Memory in Dynamic Transformation from Porous Organic Cages to Covalent Organic Frameworks for Enantiorecognition Analysis

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(11), С. 7594 - 7604

Опубликована: Март 11, 2024

The preservation of chirality during a transformation process, known as the "chiral memory" effect, has garnered significant attention across multiple research disciplines. Here, we first report retention original chiral structure dynamic covalent chemistry (DCC)-induced structural from porous organic cages into frameworks (COFs). A total six two-dimensional COFs constructed by entirely achiral building blocks were obtained through DCC-induced substitution linkers in homochiral cage (CC3-R or -S) using amine monomers. Homochirality these resulted construction 3-fold-symmetric benzene-1,3,5-methanimine cores with propeller-like configuration one single-handedness throughout cage-to-COF transformation. can be further utilized fluorescence sensors stationary phases for gas chromatography high enantioselectivity. present study thus highlighted great potential to expand scope functional materials via crystal-to-crystal memory effect.

Язык: Английский

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Nanofibrous Porous Organic Polymers and Their Derivatives: From Synthesis to Applications

Advanced Science, Год журнала: 2024, Номер 11(19)

Опубликована: Март 12, 2024

Abstract Engineering porous organic polymers (POPs) into 1D morphology holds significant promise for diverse applications due to their exceptional processability and increased surface contact enhanced interactions with guest molecules. This article reviews the latest developments in nanofibrous POPs derivatives, encompassing polymer nanofibers, composites, POPs‐derived carbon nanofibers. The review delves design fabrication strategies, elucidates formation mechanisms, explores functional attributes, highlights promising applications. first section systematically outlines two primary approaches of POPs, i.e., direct bulk synthesis electrospinning technology. Both routes are discussed compared terms template utilization post‐treatments. Next, performance derivatives reviewed including water treatment, water/oil separation, gas adsorption, energy storage, heterogeneous catalysis, microwave absorption, biomedical systems. Finally, highlighting existent challenges offering future prospects concluded.

Язык: Английский

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Facile Microwave-Assisted Synthesis of 2D Imine-Linked Covalent Organic Frameworks for Exceptional Iodine Capture

Precision Chemistry, Год журнала: 2023, Номер 1(4), С. 233 - 240

Опубликована: Март 17, 2023

Covalent organic frameworks (COFs) have emerged as auspicious porous adsorbents for radioiodine capture. However, their conventional solvothermal synthesis demands multiday synthetic times and anaerobic conditions, largely hampering practical use. To tackle these challenges, we present a facile microwave-assisted of 2D imine-linked COFs, Mw-TFB-BD-X, (X = -CH3 -OCH3) under air within just 1 h. The resultant COFs possessed higher crystallinity, better yields, more uniform morphology than counterparts. Remarkably, Mw-TFB-BD-CH3 Mw-TFB-BD-OCH3 exhibited exceptional iodine adsorption capacities 7.83 g g-1 7.05 g-1, respectively, placing them among the best-performing COF static vapor Moreover, can be reused 5 with no apparent loss in capacity. exceptionally high excellent reusability were mainly attributed to spherical enhanced chemical stability due in-built electron-donating groups, despite low surface areas. This work establishes benchmark developing advanced that combine fast kinetics, capacity, reusability, rapid synthesis, set appealing features remain challenging merge so far.

Язык: Английский

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Emergent induced circularly polarized luminescence in host–guest crystalline porous assemblies

Coordination Chemistry Reviews, Год журнала: 2024, Номер 514, С. 215859 - 215859

Опубликована: Май 9, 2024

Язык: Английский

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Raising the Asymmetric Catalytic Efficiency of Chiral Covalent Organic Frameworks by Tuning the Pore Environment

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(8), С. 10661 - 10670

Опубликована: Фев. 20, 2024

Chiral covalent organic frameworks (COFs) hold considerable promise in the realm of heterogeneous asymmetric catalysis. However, fine-tuning pore environment to enhance both activity and stereoselectivity chiral COFs such applications remains a formidable challenge. In this study, we have successfully designed synthesized series clover-shaped, hydrazone-linked COFs, each with varying number accessible pyrrolidine catalytic sites. Remarkably, efficiencies these aldol reaction between cyclohexanone 4-nitrobenzaldehyde correlate well sites within frameworks. The COF featuring nearly one moiety at nodal point demonstrated excellent yields enantiomeric excess (ee) values, reaching up 97 83%, respectively. findings not only underscore profound impact deliberately controlled on but also offer new perspective for design synthesis advanced efficient

Язык: Английский

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Heterostructural covalent organic framework/polymer composite materials: Recent advances in multidisciplinary applications

Nano Today, Год журнала: 2024, Номер 55, С. 102211 - 102211

Опубликована: Март 4, 2024

Язык: Английский

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Observation of Chiral Channels in Helical Covalent Organic Frameworks

Journal of the American Chemical Society, Год журнала: 2024, Номер unknown

Опубликована: Апрель 12, 2024

Unraveling the mechanism of chirality transfer across length scales is crucial to rational development functional materials with hierarchical chirality. The key obstacle lack structural information, especially at mesoscopic level. We report herein identification helical covalent organic frameworks (heliCOFs) chirality, which integrate molecular channel and morphology into one crystalline entity. Specifically, benefiting from highly ordered structure heliCOFs, existence chiral channels level has been confirmed by electron crystallography, handedness these directly determined through stereopair imaging technique. Accordingly, in heliCOFs microscopic macroscopic levels could be rationalized a layer-rotating model that supported both crystal analysis theoretical calculations. Observation not only provides unprecedented data for understanding process but also sheds new light on construction polymeric

Язык: Английский

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