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Intramolecular photoinduced electron-transfer in azobenzene-perylene diimide |
| Feng Wen-Ke(冯文科)a), Feng Yi-Yu(冯弈钰)b)c), Wang Shu-Feng(王树峰)a)†, Feng Wei(封伟)b)c), Yi Wen-Hui(易文辉)d), and Gong Qi-Huang(龚旗煌) a)‡ |
| a State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China; b School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China; c Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, China; d Department of Electronic Science and Technology, School of Information and Electronics Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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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.
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Received: 25 November 2009
Revised: 16 April 2010
Accepted manuscript online:
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PACS:
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07.57.-c
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(Infrared, submillimeter wave, microwave and radiowave instruments and equipment)
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33.15.Fm
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(Bond strengths, dissociation energies)
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33.50.Dq
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(Fluorescence and phosphorescence spectra)
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33.70.Jg
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(Line and band widths, shapes, and shifts)
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| Fund: 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). |
Cite this article:
Feng Wen-Ke(冯文科), Feng Yi-Yu(冯弈钰), Wang Shu-Feng(王树峰), Feng Wei(封伟), Yi Wen-Hui(易文辉), and Gong Qi-Huang(龚旗煌) Intramolecular photoinduced electron-transfer in azobenzene-perylene diimide 2010 Chin. Phys. B 19 113401
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