Rational design of a visible-light photochromic diarylethene:a simple strategy by extending conjugation with electron donating groups

作     者：Shanliang Tang Fengling Song Meiheng Lu Keli Han Xiaojun Peng 

作者机构：State Key Laboratory of Fine Chemicals Dalian University of Technology State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Sciences 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2019年第62卷第4期

页      面：451-459页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (21877011, 21576038, 21421005) the Fundamental Research Funds for the Central Universities of China (DUT16TD21) Science Program of Dalian City (2014J11JH133, 2015J12JH207) the Supercomputing Center of Dalian University of Technology 

主　　题：diarylethylenes visible-light photochromism photoreaction quantum yield fluorescence photoswitching 

摘      要：Photochromic diarylethenes have been widely used in many fields. However, their cyclization process must be induced by UV light. In this article, a simple strategy is developed by extending π-conjugation with electron donating groups. The modified dirylethene derivative can photocyclolize under 405-nm light with a good photochromic efficiency. Meanwhile, its absorption and moderate fluorescence can be switched effectively in both directions by visible lights(405 and 520 nm, respectively) in different solutions and in living cells. We believe that this simple method will become a versatile strategy for developing various dirylethylenes with visible-light photochromism.