文献类型：期刊文献

英文题名：Light-regulating chirality of metallacages featuring dithienylethene switches

作者：Guo, Shaomeng[1];Li, Mengqi[1];Hu, Honglong[1];Xu, Ting[1];Xi, Hancheng[1];Zhu, Wei-Hong[1]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Mol Engn Feringa Nobel Prize Scientist Joint Res C, Sch Chem & Mol Engn,Key Lab Adv Mat Joint Int Res, Shanghai 200237, Peoples R China

年份：2023

卷号：14

期号：23

起止页码：6237

外文期刊名：CHEMICAL SCIENCE

收录：;EI(收录号：20232214171806);WOS:【SCI-EXPANDED(收录号:WOS:000992195800001)】；

基金：This work was supported by the NSFC Science Center Program (21788102, 21636002, 22208100 and 22108076), Scientific Committee of Shanghai (21JC1401700 and 15XD1501400), China Postdoctoral Science Foundation (2019M661399, 2021M691006 and 2022M721143) and Shanghai Sailing Program (20YF1410500, 22YF1410400 and 23YF1409000). We thank Prof. Xin-Ping Wu and Mingyu Yang for their help with the DFT calculations.

语种：英文

外文关键词：Conversion efficiency - Supramolecular chemistry

摘要：Dynamic chiral superstructures are of vital importance for understanding the organization and function of chirality in biological systems. However, achieving high conversion efficiency for photoswitches in nanoconfined architectures remains challenging but fascinating. Herein, we report a series of dynamic chiral photoswitches based on supramolecular metallacages through the coordination-driven self-assembly of dithienylethene (DTE) units and octahedral zinc ions, thereby successfully achieving an ultrahigh photoconversion yield of 91.3% in nanosized cavities with a stepwise isomerization mechanism. Interestingly, the chiral inequality phenomenon is observed in metallacages, resulting from the intrinsic photoresponsive chirality in the closed form of the dithienylethene unit. Upon hierarchical organization, we establish a dynamic chiral system at the supramolecular level, featuring chiral transfer, amplification, induction, and manipulation. This study provides an intriguing idea to simplify and understand chiral science.