物理化学学报2026，Vol.42Issue(10)：113-123,11.DOI:10.1016/j.actphy.2026.100256
非手性低聚苯胺多级手性纳米带:温度诱导的螺旋反转及对映选择性结晶应用
Hierarchical chiral nanoribbons of achiral oligoaniline:temperature induced helicity inversion and enantioselective crystallization application
摘要
Abstract
Hierarchical chiral nanostructures with controllable chirality are highly desirable due to their novel chirality-related applications.They predominantly rely on chiral molecules;however,the intrinsic chirality interference problem for applications such as chiral separation cannot be ignored.Herein,we report the synthesis of hierarchical chiral nanoribbons from achiral oligoanilines through a facile but effective route,where the oxidation of aniline in achiral system leads to the formation helically twisted nanoribbons through a hierarchical self-assembly process involving intermediate nanowires.Remarkably,both the torsion direction and supramolecular chirality can be modulated and even reversed by simply adjusting the reaction temperature.Mechanistic investigations revealed that achiral oligoaniline of triphenylamine derivative was generated during the oxidation process,where the asymmetrical self-assembly was modulated by intermolecular interactions with temperature.The resulting hierarchical chiral nanoribbons were successfully employed to induce enantioselective crystallization of amino acids from racemic mixtures,enabling effective chiral resolution without the introduction of any extrinsic chiral species.This work presents a feasible strategy for achieving hierarchical chiral nanostructures in an achiral system and showcases its practical application in chiral separation using exclusively achiral materials.关键词
超分子手性/多级螺旋结构/非手性制备/低聚苯胺/对映选择性结晶Key words
Supramolecular chirality/Hierarchical helices/Achiral fabrication/Oligoaniline/Enantioselective crystallization分类
化学化工引用本文复制引用
缪正杰,周传强,任园园,徐香平,解菊,韩杰..非手性低聚苯胺多级手性纳米带:温度诱导的螺旋反转及对映选择性结晶应用[J].物理化学学报,2026,42(10):113-123,11.基金项目
国家自然科学基金(22272147,22272146,22572166)和江苏省高校优势学科建设工程 （22272147,22272146,22572166）
