Energy transfer followed by electron transfer(ETET)endows a TPE-NBD dyad with enhanced environmental sensitivity  

作　　者：Xia Wu Dongyang Li Jin Li Weijie Chi Xie Han Chao Wang Zhaochao Xu Jun Yin Xiaogang Liu 

机构地区：[1]Fluorescence Research Group,Singapore University of Technology and Design,Singapore 487372,Singapore [2]Key Laboratory of Pesticide and Chemical Biology,Ministry of Education,Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis,International Joint Research Center for Intelligent Biosensing Technology and Health,College of Chemistry,Central China Normal University,Wuhan 430079,China [3]CAS Key Laboratory of Separation Science for Analytical Chemistry,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China

出　　处：《Chinese Chemical Letters》2021年第6期1937-1941,共5页中国化学快报（英文版）

基　　金：supported by Singapore University of Technology and Design(No.T1SRCI17126);A*STAR under its Advanced Manufacturing and Engineering Program(No.A2083c0051);the National Natural Science Foundation of China(Nos.21878286,21908216);Dalian Institute of Chemical Physics(Nos.DMTO201603,TMSR201601)。

摘　　要：Energy transfer and electron transfer are both fundamental mechanisms enabling numerous functional materials and applications.While most materials systems employ either energy transfer or electron transfer,the combined effect of energy and electron transfer processes in a single donor/acceptor system remains largely unexplored.Herein,we demonstrated the energy transfer followed by electron transfer(ETET)process in a molecular dyad TPE-NBD.Due to energy transfer,the fluorescence of TPE-NBD was greatly enhanced in non-polar solvents.In contrast,polar solvents activated subsequent electron transfer and markedly quenched the emission of TPE-NBD.Consequently,ETET endows TPE-NBD with significant polarity sensitivities.We expect that employing ETET could generate many functional materials with unprecedented properties,i.e.,for single laser powered multicolor fluorescence imaging and sensing.

关 键 词：Energy transfer Electron transfer Polarity probes Environmental sensitivity 

分 类 号：TB34[一般工业技术—材料科学与工程]