Molecular rotors as a class of generally highly active ion transporters

• 作者: Jie Shen Joan Jia Ying Han Ruijuan Ye Huaqiang Zeng
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2021,（12）
• 所属期刊栏目: ARTICLES
• 页码范围: 2154-2160
• 页数: 7页
• 语种: 英文

摘要

We describe here a class of unconventional ion transporters,molecular rotors that transport ions through a rotating function rather than via traditional carrier or channel mechanisms.Mimicking macroscopic rotors,these molecular rotors consist of three modularly tunable components,i.e.,a membrane-anchoring stator,a crown ether-containing rotator for ion binding and transport,and a triple bond-based axle that allows the rotator to freely rotate around the stator in the lipid membrane.Lipid bilayer experiments reveal the generally high ability of all molecular rotors in promoting the highly efficient transmembrane K+ flux(ECs0 values =0.49-1.37 mol％ relative to lipid).While molecular rotors differing only in the ion-binding unit exhibit similar ion transport activities,those differing in the rotator's length display activity differences by up to 174％.