文献类型： 外文期刊
作者： Zhang, Xueyan 1 ; Li, Yang 1 ; Wang, Li 2 ; Liu, Hongcheng 2 ;
作者机构： 1.Univ Chinese Acad Sci, Wenzhou Inst, Wenzhou Key Lab Biophys, Wenzhou 325000, Zhejiang, Peoples R China
2.Yunnan Acad Agr Sci, Inst Qual Stand & Testing Technol, Supervis & Testing Ctr Farm Prod Qual, Minist Agr, Kunming 650205, Peoples R China
期刊名称：ORGANIC CHEMISTRY FRONTIERS （ 影响因子：4.7； 五年影响因子：4.5 ）
ISSN： 2052-4129
年卷期： 2025 年 12 卷 6 期
页码：
收录情况： SCI
摘要： Rapid and sensitive chiroptical sensing is of great significance for practical applications. Here, a novel rapid supramolecular chiroptical sensing strategy was developed to eliminate possible background interferences and enhance the chiroptical signal by a non-chiral AIE-active thiol click reaction with chiral substrates. These AIE-thiols irreversibly bind amino acids, polypeptides, amines and amino alcohols based on a click-like reaction, and their sensing products further self-assemble, resulting in a higher chiroptical signal output. In particular, the AIE thiol generated from octyloxy-functionalized alpha-cyanostilbene can form supramolecular helix pi-pi stacking in the aggregated state, which can greatly contribute to the chiroptical sensing of the target substrate. The self-assemblies obtained from different AIE thiol sensing reactions exhibit different CD and CPL behaviors due to their different self-assembly modes, which are caused by the subtle differences in the non-covalent C-H & ctdot;pi, [pi & ctdot;pi] and hydrogen bonding interactions of the chiroptical sensing reaction product. Their high reactivity and robust self-assembly sensing mechanism eliminate the interference of chiral substrates and their impurities, improving sensor sensitivity and selectivity. This strategy provides a simple and promising means of detecting chiral molecules, especially those without UV optical activity.
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