文献类型：期刊文献

英文题名：Diarylethenes with a Narrow Singlet-Triplet Energy Gap Sensitizer: a Simple Strategy for Efficient Visible-Light Photochromism

作者：Zhang, Zhiwei[1,2];Zhang, Junji[1,2];Wu, Bin[3];Li, Xin[4];Chen, Yi[1,2];Huang, Jinhai[1,2];Zhu, Liangliang[3];Tian, He[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China;[4]KTH Royal Inst Technol, Sch Biotechnol, Div Theoret Chem & Biol, SE-10691 Stockholm, Sweden

年份：2018

卷号：6

期号：6

外文期刊名：ADVANCED OPTICAL MATERIALS

收录：;EI(收录号：20180504695293);WOS:【SCI-EXPANDED(收录号:WOS:000428348200001)】；

基金：This research was supported by the National Natural Science Foundation of China (Grant Nos. 21402050 and 21420102004) and the Programme of Introducing Talents of Discipline to Universities (B16017).

语种：英文

外文关键词：diarylethene; photochromism; singlet-triplet energy gap; triplet-triplet energy transfer; visible light

摘要：All-organic visible-light photochromism is reported here via a novel strategy with narrow singlet-triplet energy gap (E-ST) materials as a sensitizer. Taking advantage of the narrow E-ST feature and the triplet-triplet energy transfer process, highly efficient photochromism of diarylethenes (DAEs) with both ring-open and ring-closure excitations shifted to visible light region is successfully achieved. Moreover, the wavelength of the visible excitation light can be easily modulated (e.g., from 405 to 470 nm) by elaborate selection of matched sensitized molecules. The write-and-erase application of this photochromic system in polymer films is further demonstrated. This strategy provides a simple and versatile selection of well-matched DAE/sensitizer couples for visible-light photochromism without complicated molecular design.