文献类型：期刊文献

英文题名：Synthesis and characteristics of dithienylethenes with purine and pyrimidine substituents

作者：Luo, Qianfu[1];Liu, Maoqi;Cheng, Renjun;Liu, Yi

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：2015

卷号：113

起止页码：602

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20151100628224);WOS:【SCI-EXPANDED(收录号:WOS:000346543200076)】；

基金：We thanks for the Nature Science Foundation of Shanghai (K100-2-13041) for financial support. We are grateful to Prof. H Tian and D.H. Qu from East China University of Science and Technology for his valuable support on this project.

语种：英文

外文关键词：Photochromism; Dithienylethene; Aminopurine; Thienopyrimidone; Hydrogen bond; Fatigue resistance

摘要：Five new dithienylethenes decorated with purine and pyrimidine derivatives have been conveniently synthesized via a facile one-pot process. All new compounds were characterized by H-1 NMR, C-13 NMR, ultraviolet-visible spectroscopy and high-resolution mass spectrometry. Their photophysical properties and photochromic behavior were investigated in detail. These compounds exhibit reversible photo-chromism with good photocyclization/photocycloreversion quantum yields and considerable molar extinction coefficients. The result shows that the introduction of purine and pyrimidine derivatives into the dithienylethene unit has a remarkable effect on their performance, such as photoinduced fatigue resistance, photocyclization/photocycloreversion quantum yields and molar extinction coefficient. (C) 2014 Elsevier Ltd. All rights reserved.