羟醛缩合
吡啶
离子液体
共价键
离子键合
单体
催化作用
试剂
羟醛反应
高分子化学
四氟硼酸盐
化学
缩合反应
冷凝
材料科学
组合化学
有机化学
离子
聚合物
物理
热力学
作者
Hai‐Feng Ji,Guoying Yan,Peng Zou,Han Wang,Mengke Li,Yi Feng,Xiongwei Qu,Dongling Geng,Jingjing Shi,Xiaojie Zhang
标识
DOI:10.1002/chem.202202787
摘要
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.
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