Ji Haifeng, Yan Gaojie, Zou Peng, Wang Han, Li Mengke, Feng Yi, Qu Xiongwei, Geng Dongling, Shi Jingjing, Zhang Xiaojie
Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China.
Downhole Technology Service Company, Bohai Drilling Engineering Company Limited, CNPC, Dagang, Tianjin, 300283, P. R. China.
Chemistry. 2023 Jan 2;29(1):e202202787. doi: 10.1002/chem.202202787. Epub 2022 Nov 10.
The development of new vinylene-linked covalent organic frameworks (COFs) with special ionic structure and high stability is challenging. Herein, we report a facile, general method for constructing ionic vinylene-linked thiopyrylium-based COFs from 2,4,6-trimethylpyrylium tetrafluoroborate and other common reagents by means of acid-catalyzed Aldol condensation. Besides, pyrylium-, and pyridinium-based COFs also can be prepared from the same monomer under slightly different reaction conditions. The COFs exhibited uniform nanofibrous morphologies with excellent crystallinities, special ionic structures, well-defined nanochannels, and high specific surface areas.
开发具有特殊离子结构和高稳定性的新型亚乙烯基连接的共价有机框架（COF）具有挑战性。在此，我们报告了一种简便、通用的方法，通过酸催化的羟醛缩合反应，由四氟硼酸2,4,6-三甲基吡啶鎓和其他常见试剂构建离子亚乙烯基连接的硫代吡啶鎓基COF。此外，在略有不同的反应条件下，也可以由相同的单体制备基于吡啶鎓和吡啶鎓的COF。这些COF呈现出具有优异结晶度的均匀纳米纤维形态、特殊的离子结构、明确的纳米通道和高比表面积。
