Function-oriented synthesis of two-dimensional (2D) covalent organic frameworks - from 3D solids to 2D sheets
Covalent organic frameworks (COFs) are constructed from the precise integration of small organic blocks into an extended, porous framework via covalent linkages. COFs can also be viewed as an organic solid consisting of a periodic array of one dimensional (1-D) channels. Although a wide range of app...
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| Published in | Chemical Society reviews Vol. 49; no. 14; pp. 4835 - 4866 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
London
Royal Society of Chemistry
21.07.2020
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| Subjects | |
| Online Access | Get full text |
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| Summary: | Covalent organic frameworks (COFs) are constructed from the precise integration of small organic blocks into an extended, porous framework
via
covalent linkages. COFs can also be viewed as an organic solid consisting of a periodic array of one dimensional (1-D) channels. Although a wide range of applications have been envisioned for COFs, understanding the structure-property correlation at the level of chemical linkages, topology, pore size and functionality is needed to unlock the potential of these materials. Herein, we review some emerging applications of two-dimensional (2D) COFs in solid-state photoluminescence, stimuli-responsive COFs, gas storage, ion conduction and energy storage, and discuss the intricate design principles that enable these COFs to perform better than their building blocks or polymeric counterparts. Going beyond bulk 2D-COFs, molecular thin organic layers called COFene can be derived from the exfoliation of 2D COFs, generating new properties for applications in optoelectronic devices, catalysis and separation.
This review provides guidelines for the function-oriented synthesis of 2D COFs from 3D solids to 2D sheets. |
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| Bibliography: | Xing Li received his Bachelor's degree in Chemistry and Biological Chemistry from Nanyang Technological University, Singapore, in 2014. He received his PhD degree in the NUS Graduate School for Integrative Sciences and Engineering from National University of Singapore in 2018. He is now a research fellow and working on COFs for novel applications in Prof Loh Kian Ping's group. His research interests include turning 2D COFs into organic 2D materials, applying COFs for solid-state photoluminescence, solid-state ion conduction and metal-gas batteries, and correlating structure-property relationships of functional materials. Dr Priya Yadav received her BS degree (2012) from University of Delhi and MS degree (2014) from Indian Institute of Technology Roorkee. She completed her PhD (2019) in organic material chemistry at National University of Singapore. She is now pursuing her postdoctoral research in Prof. Loh Kian Ping's group and her research interests focus on synthesis of polycyclic aromatic hydrocarbons and covalent organic frameworks. Kian Ping Loh is currently Provost's Chair Professor at NUS and a well-established researcher in the field of advanced 2D materials. Loh's research focuses on growth, molecular chemistry, electronic materials science and devices of 2D materials, which include 2D covalent organic frameworks, 2D hybrid perovskites and 2D inorganic materials. His awards include the President's Science Award in 2014, the University Outstanding Researcher award in 2012, University's Young Scientist award in 2008, and American Chemical Society Nano Lectureship award in 2013. He is currently an associate editor of the American Chemical Society journal Chemistry of Materials. He is also head of the 2D materials group at the Centre for Advanced 2D Materials, NUS, and also a co-director of the Shenzhen-NUS Joint Collaborative Innovation Center for Optoelectronic Science & Technology. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 ObjectType-Review-3 content type line 23 |
| ISSN: | 0306-0012 1460-4744 1460-4744 |
| DOI: | 10.1039/d0cs00236d |