Unsymmetrical photochromic bithienylethene-bridge tetraphenylethene molecular switches:Synthesis,aggregation-induced emission and information storage

作     者：Liangwei Ma Chengpeng Li Qing Yan Sheng Wang Wangen Miao Derong Cao Liangwei Ma;Chengpeng Li;Qing Yan;Sheng Wang;Wangen Miao;Derong Cao

作者机构：School of Chemistry and Chemical EngineeringKey Lab of Clean Energy Materials Chemistry of Guangdong Higher Education InstitutesLingnan Normal UniversityZhanjiang 524048China School of Chemistry and Chemical EngineeringState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510641China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2020年第31卷第2期

页      面：361-364页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21878136 21372194 and 21773103) 

主　　题：Aggregation-induced emission Bithienylethene Photochromic Tetraphenylethene Information storage 

摘      要：Aggregation-induced emission(AIE) active photochromic molecules have attracted growing attention for their versatile *** we designed and synthesized five newly unsymmetrical photochromic diarylethene(DAE) dyads(BTE1-5) by connecting tetraphenylethene(TPE) and aromatic substituent via bithienylethene(BTE) *** chemical structures of those compounds were identified by ^1H NMR,^(13)C NMR and *** absorption and emission of these dyads were investigated by UV-vis and fluore scence spectroscopy,*** results showed that all those compounds exhibited typically AIE or aggregation-induced emission enhancement(AIEE) ***,when an aggregationcaused quenching(ACQ) fluorophore(triphenylamine) was grafted to the molecule,connecting with TPE via BTE-bridge,the ACQ phenomenon was dissipated and converted to an AIE luminophore,and those compounds exhibited photochromism upon irradiation with alternative UV and visible *** solution or solid of those compounds showed distinctly fluorescence switching ON or OFF observation upon irradiation with alternative UV and visible *** is interesting that BTE1 could be applied in recording and rewritable information storage,and the cyclization quantum yields could be affected by substituent significantly.