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Photoelectrochemical properties of supramolecular species containing porphyrin and ruthenium complexes on TiO2 films

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Abstract

Modification of wide band gap semiconductor surfaces by a new generation of supramolecular sensitizers, combining porphyrin and ruthenium—phenanthroline complexes leads to versatile molecular interfaces, allowing the exploitation of photoinduced charge transfer in dye sensitized photoelectrochemical cells. meso-Tetrapyridylporphyrin coordinated to two ruthenium complexes converts 21% of the incident photons into current after excitation at the Soret band. In this work we discuss the electron/energy transfer mechanisms involved in the TiO2 sensitization by these supramolecular species, invoking some theoretical calculations.

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Authors and Affiliations

  1. Instituto de Química, Universidade de São Paulo, C. P. 26077, CEP 05513-970, São Paulo, Brazil

    Ana F. Nogueira, André Luiz B. Formiga, Herbert Winnischofer, Marcelo Nakamura, Fábio M. Engelmann, Koiti Araki & Henrique E. Toma

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  1. Ana F. Nogueira
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Nogueira, A.F., Formiga, A.L.B., Winnischofer, H. et al. Photoelectrochemical properties of supramolecular species containing porphyrin and ruthenium complexes on TiO2 films. Photochem Photobiol Sci 3, 56–62 (2004). https://doi.org/10.1039/b306702e

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