Three-Dimensional Covalent Organic Frameworks: From Topology Design to Applications DOI
Bo Gui,

Guiqing Lin,

Huimin Ding

et al.

Accounts of Chemical Research, Journal Year: 2020, Volume and Issue: 53(10), P. 2225 - 2234

Published: Sept. 8, 2020

ConspectusCovalent organic frameworks (COFs) represent a novel type of crystalline porous polymers with potential applications in many areas. Considering their covalent connectivity different dimensions, COFs are classified as two-dimensional (2D) layered structures or three-dimensional (3D) networks. In particular, 3D have gained increasing attention recently because remarkably large surface areas (>5000 m2/g), hierarchical nanopores and numerous open sites. However, it has been proven to be major challenge construct COFs, the main driving force for synthesis comes from formation bonds. addition, there several stones on roads blocking development COFs. First, successful topology design strategies limited [4 + 2] 3] condensation reactions tetrahedral molecules linear triangular building blocks first decade, which led only three available topologies (ctn, bor, dia) strongly restricted incorporation some important functional units. Next, is very challenging obtain large-size single crystals same may yield possible that quite difficult identify simulations, structure determination considered issue. Last, utilized synthesize limited, further affects functionalization applications. Therefore, since was announced 2007, research studies regarding underexplored years, few examples reported.To confront these obstacles we started contributing this field 2016. interesting quadrilateral (e.g., pyrene porphyrin) cannot easily derivatized into motifs, developed strategy via 4] blocks. After trials, found general synthetic build new pts topology. explored polycrystalline prepared by our electron diffraction technique. Moreover, expanded toolbox molecular creating successfully demonstrated characteristic properties Account, summarize above ongoing contributions, including (i) COFs; (ii) attempts determine crystal atomic resolution; (iii) diversification functionalized Overall, not offer paradigm expansion block families but also provide an idea future opportunities relevant researchers field.

Language: Английский

Covalent organic frameworks DOI
Ke Tian Tan, Samrat Ghosh, Zhiyong Wang

et al.

Nature Reviews Methods Primers, Journal Year: 2023, Volume and Issue: 3(1)

Published: Jan. 12, 2023

Language: Английский

Citations

385
Chiral Metal–Organic Frameworks DOI
Wei Gong, Zhijie Chen, Jinqiao Dong

et al.

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(9), P. 9078 - 9144

Published: March 28, 2022

In the past two decades, metal-organic frameworks (MOFs) or porous coordination polymers (PCPs) assembled from metal ions clusters and organic linkers via metal-ligand bonds have captivated significant scientific interest on account of their high crystallinity, exceptional porosity, tunable pore size, modularity, diverse functionality. The opportunity to achieve functional materials by design with promising properties, unattainable for solid-state in general, distinguishes MOFs other classes materials, particular, traditional such as activated carbon, silica, zeolites, thereby leading complementary properties. Scientists conducted intense research production chiral MOF (CMOF) specific applications including but not limited recognition, separation, catalysis since discovery first CMOF (i.e., d- l-POST-1). At present, CMOFs become interdisciplinary between chirality chemistry, material which involve many subjects physics, optics, medicine, pharmacology, biology, crystal engineering, environmental science, etc. this review, we will systematically summarize recent progress regarding strategies, synthetic approaches, cutting-edge applications. highlight successful implementation asymmetric catalysis, enantioselective sensing. We envision that review provide readers a good understanding chemistry and, more importantly, facilitate endeavors rational multifunctional industrial implementation.

Language: Английский

Citations

353
Triazine Functionalized Porous Covalent Organic Framework for Photo-organocatalytic E–Z Isomerization of Olefins DOI

Mohitosh Bhadra,

Sharath Kandambeth, Manoj Kumar Sahoo

et al.

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(15), P. 6152 - 6156

Published: April 4, 2019

Visible light-mediated photocatalytic organic transformation has drawn significant attention as an alternative process for replacing thermal reactions. Although precious metal/organic dyes based homogeneous photocatalysts have been developed, their toxic and nonreusable nature makes them inappropriate large-scale production. Therefore, we synthesized a triazine keto functionalized nonmetal covalent framework (TpTt) heterogeneous photocatalysis. As the catalyst shows absorption of visible light, it applied uphill conversion trans-stilbene to cis-stilbene in presence blue light-emitting diodes with broad substrate scope via energy transfer process.

Language: Английский

Citations

336
Chiral covalent organic frameworks: design, synthesis and property DOI
Xing Han, Yuan Chen, Bang Hou

et al.

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(17), P. 6248 - 6272

Published: Jan. 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.

Language: Английский

Citations

334
Chiral BINOL-Based Covalent Organic Frameworks for Enantioselective Sensing DOI
Xiaowei Wu, Xing Han, Qisong Xu

et al.

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(17), P. 7081 - 7089

Published: April 11, 2019

Covalent organic frameworks (COFs) have emerged as a novel platform for material design and functional explorations, but it remains challenge to synthetically functionalize targeted structures task-specific applications. Optically pure 1,1′-bi-2-naphthol (BINOL) is one of the most important sources chirality synthesis materials science, has not yet been used in construction COFs enantioselective processes. Here, by elaborately designing choosing an enantiopure BINOL-based linear dialdehyde tris(4-aminophenyl)benzene derivative or tetrakis(4-aminophenyl)ethene building blocks, two imine-linked chiral fluorescent with 2D layered hexagonal tetragonal structure are prepared. The COF containing flexible tetraphenylethylene units can be readily exfoliated into ultrathin nanosheets electrospun make free-standing nanofiber membrane. In both solution membrane systems, fluorescence effectively quenched odor vapors via supramolecular interactions immobilized BINOL moieties, leading remarkable vapor sensors. Compared homogeneous exhibited greatly enhanced sensitivity enantioselectivity owing confinement effect conformational rigidity sensing groups framework. ability place such useful auxiliary inside open channels capable amplifying discrimination analytes represents major step toward rational porous molecular more

Language: Английский

Citations

327
2D and 3D Porphyrinic Covalent Organic Frameworks: The Influence of Dimensionality on Functionality DOI
Yi Meng, Yi Luo, Ji‐Long Shi

et al.

Angewandte Chemie International Edition, Journal Year: 2019, Volume and Issue: 59(9), P. 3624 - 3629

Published: Nov. 27, 2019

Abstract The construction of 2D and 3D covalent organic frameworks (COFs) from functional moieties for desired properties has gained much attention. However, the influence COFs dimensionality on their functionalities, which can further assist in COF design, never been explored. Now, by selecting designed precursors topology diagrams, porphyrinic (2D‐PdPor‐COF 3D‐PdPor‐COF) are synthesized. By model building Rietveld refinement powder X‐ray diffraction, 2D‐PdPor‐COF crystallizes as sheets while 3D‐PdPor‐COF adopts a five‐fold interpenetrated pts topology. Interestingly, compared with 2D‐PdPor‐COF, showed interesting properties, including 1) higher CO 2 adsorption capacity; 2) better photocatalytic performance; 3) size‐selective photocatalysis. Based this study, we believe that incorporation moieties, definitely functionalities.

Language: Английский

Citations

298
Ion Conduction in Polyelectrolyte Covalent Organic Frameworks DOI
Qing Xu, Shanshan Tao, Qiuhong Jiang

et al.

Journal of the American Chemical Society, Journal Year: 2018, Volume and Issue: 140(24), P. 7429 - 7432

Published: May 29, 2018

Covalent organic frameworks (COFs) with ordered one-dimensional channels could offer a predesigned pathway for ion motion. However, implanting salts into bare of COFs gives rise to limited conductivity. Here, we report the first example polyelectrolyte by integrating flexible oligo(ethylene oxide) chains onto pore walls. Upon complexation lithium ions, form interface in nanochannels and transport. As result, conductivity was enhanced more than 3 orders magnitude compared that ions across nanochannels. The promoted motion via vehicle mechanism exhibited cycle thermal stabilities. These results suggest strategy engineering 1D open new way solid-state conductors.

Language: Английский

Citations

275
Covalent Organic Frameworks with Chirality Enriched by Biomolecules for Efficient Chiral Separation DOI Creative Commons

Sainan Zhang,

Yunlong Zheng,

Hongde An

et al.

Angewandte Chemie International Edition, Journal Year: 2018, Volume and Issue: 57(51), P. 16754 - 16759

Published: Oct. 25, 2018

The separation of racemic compounds is important in many fields, such as pharmacology and biology. Taking advantage the intrinsically strong chiral environment specific interactions featured by biomolecules, here we contribute a general strategy developed to enrich chirality into covalent organic frameworks (COFs) covalently immobilizing series biomolecules (amino acids, peptides, enzymes) achiral COFs. Inheriting from immobilized afforded biomolecules⊂COFs serve versatile highly efficient stationary phases towards various racemates both normal reverse phase high-performance liquid chromatography (HPLC). different between enzyme secondary structure were revealed surface-enhanced Raman scattering studies, accounting for observed capacity enzymes⊂COFs.

Language: Английский

Citations

262
Porous organic polymers for light-driven organic transformations DOI
Zhenwei Zhang,

Ji Jia,

Yongfeng Zhi

et al.

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(7), P. 2444 - 2490

Published: Jan. 1, 2022

As a new generation of porous materials, organic polymers (POPs), have recently emerged as powerful platform heterogeneous photocatalysis. POPs are constructed using extensive synthesis methodologies, with various functional units being connected via high-energy covalent bonds. This review systematically presents the recent advances in for visible-light driven transformations. Herein, we firstly summarize common construction strategies POP-based photocatalysts based on two major approaches: pre-design and post-modification; secondly, categorize methods reaction types constructing POPs. We then classify introduce specific reactions current light-driven POP-mediated Finally, outline state development problems faced transformations by POPs, present some perspectives to motivate reader explore solutions these confront challenges process.

Language: Английский

Citations

255
Covalent organic frameworks: Design principles, synthetic strategies, and diverse applications DOI Creative Commons
Hesham R. Abuzeid, Ahmed F. M. EL‐Mahdy, Shiao‐Wei Kuo

et al.

Giant, Journal Year: 2021, Volume and Issue: 6, P. 100054 - 100054

Published: Feb. 26, 2021

Covalent organic frameworks (COFs) are the emerging type of crystalline porous materials, prepared through reticular chemistry with building blocks featuring light elements (such as C, H, O, N, or B atoms), and connected covalent bond extended into two three dimensions. In past few years, COFs have attracted attention for their interesting properties, including high-order porosity, structural versatility, facile surface modification, high thermal chemical stabilities. Accordingly, potential platforms diverse practical implementations, gas separation storage, heterogeneous catalysis, sensing, luminescence, electronic devices, drug delivery, energy storage conversion. This Review provides overview design strategies synthetic methodologies that been used widely preparation COFs, also summarizes selected examples applications.

Language: Английский

Citations

246