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Energy and electron transfer processes in self-organized porphyrin and chlorin triadic and pentadic complexes

  • “Applied Photochemistry”, Proceedings Of The 3rd Int. Conf. On Solar Energy Storage And Applied Photochemistry, Cairo, Eygpt, January 1995
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Abstract

Self-organized arrays stable at room temperature containing three or five macrocyclic fragments have been constructed using two-fold ligation of Zn-porphyrin and Zn-chlorin chemical dimers by di- or tetrapyridyl substituted porphyrins, chlorins or tetrahydroporphyrins. Spectral, photophysical and thermodynamic properties of the ensembles have been studied in the temperature range from 140 to 360 K. Kinetic behavior of the complexes upon optical excitation was investigated using a fluorescent picosecond laser setup (Δt≅30 ps) with 2-D (wavelength-lifetime) registration. Observed spectral properties are explained in terms of extra-ligation and excitonic coupling. Nonradiative forward and backward excitation energy transfer (ET), electron transfer andd-π interactions are discussed as the main paths of electronic excitation deactivation in the complexes.

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Authors and Affiliations

  1. University of Technology Chemnitz-Zwickau, 09107, Chemnitz, Germany

    C Von Borczyskowski & U Rempel

  2. Institute of Molecular and Atomic Physics, Acad. Sci. of Belarus, 70, F. Scaryna Avenue, 220 072, Minsk, Belarus

    E Zenkevich, A Shul’ga & A Chernook

Authors
  1. C Von Borczyskowski
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  2. U Rempel
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  3. E Zenkevich
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  4. A Shul’ga
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  5. A Chernook
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Von Borczyskowski, C., Rempel, U., Zenkevich, E. et al. Energy and electron transfer processes in self-organized porphyrin and chlorin triadic and pentadic complexes. Proc. Indian Acad. Sci. (Chem. Sci.) 107, 803–811 (1995). https://doi.org/10.1007/BF02869972

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