Premium
Synthesis of Ionic Vinylene‐Linked Covalent Organic Frameworks through Quaternization‐Activated Knoevenagel Condensation
Author(s) -
Meng Fancheng,
Bi Shuai,
Sun Zuobang,
Jiang Biao,
Wu Dongqing,
Chen JieSheng,
Zhang Fan
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202104375
Subject(s) - knoevenagel condensation , covalent bond , ionic bonding , chemistry , lithium (medication) , polymer chemistry , crystallinity , ionic liquid , adsorption , salt (chemistry) , organic chemistry , inorganic chemistry , ion , crystallography , medicine , endocrinology , catalysis
We developed a simple approach to synthesizing ionic vinylene‐linked two‐dimensional covalent organic frameworks (COFs) through a quaternization‐promoted Knoevenagel condensation at three aromatic methyl carbon atoms of N ‐ethyl‐2,4,6‐trimethylpyridinium halide with multitopic aromatic aldehyde derivatives. The resultant COFs exhibited a honeycomb‐like structure with high crystallinity and surface areas as large as 1343 m 2 g −1 . The regular shape‐persistent nanochannels and the positively charged polymeric frameworks allowed the COFs to be uniformly composited with linear polyethylene oxide and lithium salt, displaying ionic conductivity as high as 2.72×10 −3 S cm −1 .