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Self‐Assembly of Size‐Controlled m ‐Pyridine–Urea Oligomers and Their Biomimetic Chloride Ion Channels
Author(s) -
Chen Hualong,
Liu Yajing,
Cheng Xuebo,
Fang Senbiao,
Sun Yuli,
Yang Zequn,
Zheng Wei,
Ji Xunming,
Wu Zehui
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202102174
Subject(s) - oligomer , chemistry , hydrogen bond , pyridine , trimer , intramolecular force , urea , crystallography , intermolecular force , polymer chemistry , photochemistry , molecule , stereochemistry , organic chemistry , dimer
The m‐pyridine urea (mPU) oligomer was constructed by using the intramolecular hydrogen bond formed by the pyridine nitrogen atom and the NH of urea and the intermolecular hydrogen bond of the terminal carbonyl group and the NH of urea. Due to the synergistic effect of hydrogen bonds, mPU oligomer folds and exhibits strong self‐assembly behaviour. Affected by folding, mPU oligomer generates a twisted plane, and one of its important features is that the carbonyl group of the urea group orientates outwards from the twisted plane, while the NHs tend to direct inward. This feature is beneficial to NH attraction for electron‐rich species. Among them, the trimer self‐assembles into helical nanotubes, and can efficiently transport chloride ions. This study provides a novel and efficient strategy for constructing self‐assembled biomimetic materials for electron‐rich species transmission.