Intramolecular photoinduced electron-transfer in azobenzene-perylene diimide

• 来源期刊: 中国物理B（英文版）
• 关键词: electron-transfer femtosecond AZO-PDI transient absorption
• 年，卷（期）: 2010,（11）
• 页码范围: 323-329
• 页数: 7页
• 语种: 英文

摘要

This paper studies the intramolecular photoinduced electron-transfer (PET) of covalent bonded azobenzeneperylene 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 1011 s-1 is found.This PET process is also consolidated by femtosecond transient absorption spectra.