文献类型：期刊文献

中文题名：An Optic/Proton Dual-Controlled Fluorescence Switch based on Novel Photochromic Bithienylethene Derivatives

英文题名：An Optic/Proton Dual-Controlled Fluorescence Switch based on Novel Photochromic Bithienylethene Derivatives

作者：Zhang Jiaqi;Jin Jiayu;Zhang Junji;Zou Lei[1]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2012

卷号：30

期号：8

起止页码：1741

中文期刊名：Chinese Journal of Chemistry

外文期刊名：CHINESE JOURNAL OF CHEMISTRY

收录：;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000307786900014)】；CSCD:【CSCD2011_2012】；

基金：This work was supported by NSFC/China (No. 21190033), the National Basic Research 973 Program (No. 2011CB808400) and Scientific Committee of Shanghai.

语种：英文

中文关键词：photochromism;diarylethenes;dual-control;fluorescence

外文关键词：photochromism; diarylethenes; dual-control; fluorescence

摘要：A simple method for the synthesis of new bithienylethenes bearing a functional group on the cyclopentene moi- ety is developed. Three new photochromic compounds （4a, 4b, 4c） have been successfully synthesized through this simple method, and exhibit good photochromic properties with alternate irradiation of ultraviolet and visible light. Furthermore, the fluorescence of compound 4a, which bears a quinoline unit on the cyclopentene, can be modulated via optic and proton dual inputs. Upon excitation by 320 nm light, 4a emits a strong fluorescence at 404 nm. After irradiation with 254 nm light, the emission intensity is reduced due to the fluorescence resonance energy transfers （FRET） from quinoline unit to bithienylethene unit. Moreover, on addition of H~, the fluorescence is quenched completely due to the protonation of the quinoline. In addition, both the FRET and protonation process are reversi- ble, which indicates a potential application in molecular switches and logic gates.
A simple method for the synthesis of new bithienylethenes bearing a functional group on the cyclopentene moiety is developed. Three new photochromic compounds (4a, 4b, 4c) have been successfully synthesized through this simple method, and exhibit good photochromic properties with alternate irradiation of ultraviolet and visible light. Furthermore, the ?uorescence of compound 4a, which bears a quinoline unit on the cyclopentene, can be modulated via optic and proton dual inputs. Upon excitation by 320 nm light, 4a emits a strong ?uorescence at 404 nm. After irradiation with 254 nm light, the emission intensity is reduced due to the ?uorescence resonance energy transfers (FRET) from quinoline unit to bithienylethene unit. Moreover, on addition of H+, the fluorescence is quenched completely due to the protonation of the quinoline. In addition, both the FRET and protonation process are reversible, which indicates a potential application in molecular switches and logic gates.