Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (11): 2541-2546.doi: 10.3866/PKU.WHXB20111021


Spectral Research into Intramolecular Photoinduced Electron Transfer of Porphyrin-Anthraquinone Hybrids

ZHAO Ping1, XU Lian-Cai2, MA Li3   

  1. 1. School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, Guangdong Province, P. R. China;
    2. School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, P. R. China;
    3. College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
  • Received:2011-07-29 Revised:2011-08-14 Published:2011-10-27
  • Contact: ZHAO Ping
  • Supported by:

    The project was supported by the Medical Research Foundation of Guangdong Province, China (B2010158).

Abstract: A series of covalently linked porphyrin (Por)-anthraquinone (AQ) hybrids Por-Cn-AQ (n=1, 4, 10) with flexible different length carbon chains were synthesized and their intramolecular photoinduced electron transfer (PET) properties were investigated mainly by steady-state fluorescence and decayed luminescence spectra. We studied the PET mechanism using density functional theory (DFT). We found that PET occurs from the porphyrin moiety to the anthraquinone moiety of these dyads and that the PET efficiency is influenced considerably by the length of the linkage between the two moieties in the hybrids. From both the experimental and theoretical results, we can conclude that the PET of these dyads is seemingly most compatible with a“through-bond”(super-exchange) mechanism.

Key words: Porphyrin-anthraquinone dyad, Electron transfer, Fluorescence spectrum, Density functional theory


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