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Supramolecular Gel Based on Crown‐Ether‐Appended Dynamic Covalent Macrocycles
Author(s) -
Ge Yan,
Gong Hanlin,
Shang Jie,
Jin Lin,
Pan Tiezheng,
Zhang Qiao,
Dong Shengyi,
Wang Yangxin,
Qi Zhenhui
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800731
Subject(s) - supramolecular chemistry , crown ether , covalent bond , polymer chemistry , hydrogen bond , alkyl , linker , ether , chemistry , dynamic covalent chemistry , molecule , acetonitrile , dithiol , non covalent interactions , materials science , organic chemistry , ion , computer science , operating system
A new type of dynamic covalent macrocycle with self‐promoted supramolecular gelation behavior is developed. Under oxidative conditions, the dithiol compound containing a diamide alkyl linker with an odd number (7) of carbon chain and an appended crown ether shows a remarkable gelation ability in acetonitrile, without any template molecules. Due to the existence of crown ethers and disulfide bonds, the obtained gel shows a multiple stimuli‐responsiveness behavior. The mechanical properties and reversibility of the gel are investigated. Computational modeling suggests that the peripheral chain for diamide hydrogen bonding is responsible for the gelation process.