文献类型：期刊文献

英文题名：Configurable photochromism of an unsymmetrical dithienylethene derivative by Cu2+ ions or water

作者：Zou, Qi[1,2];Li, Xin[3];Agren, Hans[3]

机构：[1]Shanghai Univ Elect Power, Coll Environm & Chem Engn, Shanghai 200090, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]KTH Royal Inst Technol, Sch Biotechnol, Div Theoret Chem & Biol, SE-10691 Stockholm, Sweden

年份：2014

卷号：111

起止页码：1

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20142517835180);WOS:【SCI-EXPANDED(收录号:WOS:000340976400001)】；

基金：Q. Zou thanks financial support by Innovation Program of Shanghai Municipal Education Commission (14YZ128), the Science and Technology Commission of Shanghai Municipality (14YF1410900), and Open Project Fund of Key Labs for Advanced Materials, East China Univ. Science & Technology. X. Li and H. Agren acknowledge a grant from the Carl Tryggers Foundation and computational resources provided by the Swedish National Infrastructure for Computing for the project "Multiphysics Modeling of Molecular Materials", SNIC 025/12-38.

语种：英文

外文关键词：Gated photochromism; Diarylethenes; Schiff base; Coordination; Theoretical simulations; Molecular keypad

摘要：We describe a gated photochromic behavior of an unsymmetrical dithienylethene derivative, which is intrinsically inert to photoisomerization in organic solvents and which is activated by addition of Cu2+ ions or water. The mechanism behind the gated photochromic property is interpreted by theoretical simulations, suggesting that the energy levels of frontier molecular orbitals are altered by the interaction of the Schiff base moiety with Cu2+ ions or water molecules. Potential applications of such gated photochromic materials have been exemplified not only by the reversible interchange between the photoactive and photoinactive states triggered by Cu2+ ions and EDTA, but also by the construction of a keypad with sequence-dependent input signals at the molecular level. (C) 2014 Elsevier Ltd. All rights reserved.