文献类型：期刊文献

英文题名：Enantiospecific photoresponse of sterically hindered diarylethenes for chiroptical switches and photomemories

作者：Li, Wenlong[1];Li, Xin[2];Xie, Yongshu[1];Wu, Yue[1];Li, Mengqi[1];Wu, Xin-Yan[1];Zhu, Wei-Hong[1];Tian, He[1]

机构：[1]E China Univ Sci & Technol, Collaborat Innovat Ctr Coal Based Energy i CCE, Shanghai Key Lab Funct Mat Chem, Key Lab Adv Mat & Inst Fine Chem, Shanghai 200237, Peoples R China;[2]KTH Royal Inst Technol, Sch Biotechnol, Div Theoret Chem & Biol, S-10691 Stockholm, Sweden

年份：2015

卷号：5

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000351229100001)】；

基金：This work was supported by National 973 Program (No. 2013CB733700), NSFC for Creative Research Groups (21421004) and Distinguished Young Scholars (21325625), NSFC/China, the Oriental Scholarship, National Major Scientific Technological Special Project (2012YQ15008709), and the Fundamental Research Funds for the Central Universities (WJ1416005).

语种：英文

摘要：Light-driven transcription, replication and enzyme catalysis are critically dependent upon a delicate transfer between molecular and supramolecular chirality. Chemists have well realized the impressive stereospecificity over many thermally accessible cycloaddition with chiral catalysts, but making light work in the enantiomer control of diarylethene photocyclization has proved to be more challenging. Here, we report a unique sterically hindered diarylethene (BBTE) system with absolute enantiospecific photocyclization and cycloreversion. Moreover, we have fully separated all the five thermally stable isomers, consisting of one achiral parallel conformer, one pair of anti-parallel ring-open enantiomers, and another pair of ring-closed enantiomers, whose absolute chiral configurations are entirely elucidated by single X-ray crystallographic analyses. The photo-responsive feature exhibits a reversible, complete enantio-control transformation without racemism, offering an unrivaled unimolecular enantiospecific platform for potential applications as bistable chiroptical switches and all-photonic photomemories with optical rotation as non-destructive readout.