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Polypyridine‐Based Helical Amide Foldamer Channels: Rapid Transport of Water and Protons with High Ion Rejection
Author(s) -
Shen Jie,
Fan Jingrong,
Ye Ruijuan,
Li Ning,
Mu Yuguang,
Zeng Huaqiang
Publication year - 2020
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.202003512
Subject(s) - foldamer , chemistry , covalent bond , gramicidin , polymerization , hydrogen bond , amide , ion , combinatorial chemistry , photochemistry , membrane , crystallography , molecule , polymer , organic chemistry , biochemistry
Abstract Synthetic strategies that enable rapid construction of covalent organic nanotubes with an angstrom‐scale tubular pore remain scarcely reported. Reported here is a remarkably simple and mild one‐pot polymerization protocol, employing POCl 3 as the polymerization agent. This protocol efficiently generates polypyridine amide foldamer‐based covalent organic nanotubes with a 2.8 nm length at a yield of 50 %. Trapping single‐file water chains in the 2.8 Å tubular cavity, rich in hydrogen‐bond donors and acceptors, these tubular polypyridine ensembles rapidly and selectively transport water at a rate of 1.6×10 9 H 2 O⋅S −1 ⋅channel −1 and protons at a speed as fast as gramicidin A, with a high rejection of ions.