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Intramolecular photoinduced electron-transfer in azobenzene-perylene diimide |
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| Authors: | Feng Wen-Ke Feng Yi-Yu Wang Shu-Feng Feng Wei Yi Wen-Hui and Gong Qi-Huang |
| Institution: | State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, China;State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, China;Department of Electronic Science and Technology, School of Information and Electronics Engineering, Xi'an Jiaotong University, Xi'an 710049, China;State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China |
| Abstract: | 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 1011 s-1 is found. This PET process is also consolidated by femtosecond transient absorption spectra. |
| Keywords: | electron-transfer femtosecond AZO-PDI transient absorption |
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