Intramolecular photoinduced electron-transfer in azobenzene-perylene diimide  

作　　者：冯文科 冯弈钰 王树峰 封伟 易文辉 龚旗煌 

机构地区：[1]State Key Laboratory for Mesoscopic Physics,Department of Physics,Peking University [2]School of Materials Science and Engineering,Tianjin University [3]Tianjin Key Laboratory of Composite and Functional Materials [4]Department of Electronic Science and Technology,School of Information and Electronics Engineering,Xi'an Jiaotong University

出　　处：《Chinese Physics B》2010年第11期323-329,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 10504001,60878019,10821062,10934001,60677002 and 10828407);the National Basic Research Program of China (Grant Nos. 2009CB930504,2007CB307001,2006CB921601 and 2006CB806007)

摘　　要：This paper studies the intramolecular photoinduced electron-transfer （PET） of covalent bonded azobenzene-perylene diimide （AZO-PDI） in solvents by using steady-state and time-resolved fluorescence spectroscopy together with ultrafast transient absorption spectroscopic techniques. Fast fluorescence quenching is observed when AZO-PDI is excited at characteristic wavelengths of AZO and perylene moieties. Reductive electron-transfer with transfer rate faster than 10^11 s^-1 is found. This PET process is also consolidated by femtosecond transient absorption spectra.This paper studies the intramolecular photoinduced electron-transfer （PET） of covalent bonded azobenzene-perylene diimide （AZO-PDI） in solvents by using steady-state and time-resolved fluorescence spectroscopy together with ultrafast transient absorption spectroscopic techniques. Fast fluorescence quenching is observed when AZO-PDI is excited at characteristic wavelengths of AZO and perylene moieties. Reductive electron-transfer with transfer rate faster than 10^11 s^-1 is found. This PET process is also consolidated by femtosecond transient absorption spectra.

关 键 词：ELECTRON-TRANSFER FEMTOSECOND AZO-PDI transient absorption 

分 类 号：O561[理学—原子与分子物理]