文献类型：期刊文献

英文题名：Sterically hindered diarylethenes with thienopyridine: Substituent position effect on photochromic properties

作者：Xi, Hancheng[1,2];Li, Mengqi[1,2];Li, Wenlong[1,2];Zhu, Wei-Hong[1,2]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Joint Int Res Lab Precis Chem & Mol Engn,Frontier, Key Lab Adv Mat,Shanghai Key Lab Funct Mat Chem,F, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Inst Fine Chem,Feringa Nobel, Shanghai 200237, Peoples R China

年份：2020

卷号：182

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20202908938461);WOS:【SCI-EXPANDED(收录号:WOS:000564525200008)】；

基金：This work is financially supported by NSFC/China for Science Center Program (21788102), Creative Research Groups (21421004) and Key Project (21636002), Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), China Fundamental Research Funds for the Central Universities, and Program of Introducing Talents of Discipline to Universities (B16017).

语种：英文

外文关键词：Photochromic; Sterically-hindered diarylethene; Substituent position effect; Solvent effect

摘要：Diarylethenes (DAEs) have recently attracted great attention for their applications in light-responsive materials. As much efforts have been directed towards the elucidation of the structure-property relationship of DAE derivatives, improving photochromic performances through structure optimization is still worthy of study. Herein, three isomeric diarylethenes with thienopyridine units are designed for gaining insights into substituent position effect on photochromic performances. It is shown that the nitrogen atom in pyridine rings shows influence on the photochromic behaviors, such as photoreaction quantum yields, conversion ratios of target systems. Distinctively, thieno [3,2-b]pyridine-containing TP3 displays a novel solvent-dependent photochromic activity. And the photochromic reactivity of thieno [2,3-b]pyridine-containing TP1 can be specifically blocked by Cu2+, showing the gated photochromism. The diverse photochromic properties make the target systems promising candidates for the development of practical molecular devices with certain functions.