Reconstruction of Covalent Organic Frameworks by Dynamic Equilibrium |
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| Authors: | Dr Qiang Gao Linyi Bai Dr Yongfei Zeng Dr Peng Wang Dr Xiaojing Zhang Prof Ruqiang Zou Prof Yanli Zhao |
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| Affiliation: | 1. Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore);2. Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871 (P. R. China);3. Singapore Peking University Research Centre for a Sustainable Low‐Carbon Future, 1 Create Way, Singapore 138602 (Singapore);4. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore) |
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| Abstract: | Covalent organic frameworks (COFs) are periodic two‐ or three‐dimensional polymeric networks with high surface areas, low density, and designed structures. Because COFs are normally prepared based on reversible formation of covalent bonds with relatively weak stability, their structures can be easily broken or damaged due to changes in the surrounding environment. Thus, developing strategies to realize the reconstruction of COFs in order to extend their usage lifetime is crucial for practical applications. In addition, exploring the kinetics of COF growth under varied reaction conditions is important for better understanding the nucleation and growth processes of COFs. In this work, the reformation mechanism of an imine‐based COF using an ex situ characterization method was investigated, disclosing an interesting COF reconstruction progress from disorder to order. The present study shows the regeneration ability of COFs, and the developed method could be generalized for broader use in the field. |
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| Keywords: | covalent organic frameworks dynamic equilibrium ex situ characterization reconstruction self‐assembly |
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