文献类型：期刊文献

英文题名：Light-Driven Chiral Switching of Supramolecular Metallacycles with Photoreversibility

作者：Li, Mengqi[1];Chen, Li-Jun[2];Cai, Yunsong[1];Luo, Qianfu[1];Li, Wenlong[1];Yang, Hai-Bo[2];Tian, He[1];Zhu, Wei-Hong[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr,Key L, Shanghai Key Lab Funct Mat Chem,Joint Int Res Lab, Shanghai 200237, Peoples R China;[2]East China Normal Univ, Chang Kung Chuang Inst, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China

年份：2019

卷号：5

期号：3

起止页码：634

外文期刊名：CHEM

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000461193300016)】；

基金：W.-H.Z acknowledges financial support from the National Natural Science Foundation of China (NSFC) for the Science Center Program (21788102), Creative Research Groups (21421004), and Key Project (21636002); the National Key Research and Development Program (2016YFA0200300); and the Program of Introducing Talents of Discipline to Universities (B16017). H.T. acknowledges the financial support of the Shanghai Municipal Science and Technology Major Project (2018SHZDZX03). H.-B.Y acknowledges the financial support of the NSFC (21625202), the 973 Program (2015CB856600), the Science and Technology Commission of Shanghai Municipality (16XD1401000), and the Program for Changjiang Scholars and Innovative Research Team in University.

语种：英文

摘要：The construction of artificial chiral self-assembled systems has evolved to be one of the most attractive topics within supramolecular chemistry and materials science. However, stimuli-responsive chirality transcription with enantiospecific photoreversibility still remains challenging for chiral metallasupra-molecular structures because of the lack of appropriate building blocks. Herein, we present a chiral photoresponsive family of diarylethene-containing dipyridyl donors and their coordination-driven self-assembly behavior with the 120 degrees di-platinum(II) acceptor- The photochromic trimer units in the assembled metallacycles exhibit an unprecedented concerted photoconversion process without a step-by-step transformation. By taking advantage of the full-separated photoactive dipyridyl donor enantiomers based on the sterically hindered system, we have successfully achieved the phototriggered chirality transformation in supramolecular multi-dithienylethene metallacycles arising from axial helicity and central asymmetry, thereby establishing light-driven control in circular dichroism. Such unique photoreversible self-assembled metallacycles with photoinduced enantiospecificity enable the potential chemical platform for bistable chiroptical switching and non-destructive information encoding.