Photoelectrochemical properties of supramolecular species containing porphyrin and ruthenium complexes on TiO(2) films

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...

Full description

Saved in:
Bibliographic Details
Published in:Photochemical & photobiological sciences 2004-01, Vol.3 (1), p.56-62
Main Authors: Nogueira, Ana F, Formiga, Andre Luiz B, Winnischofer, Herbert, Nakamura, Marcelo, Engelmann, Fabio M, Araki, Koiti, Toma, Henrique E
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 TiO(2) sensitization by these supramolecular species, invoking some theoretical calculations.
ISSN:1474-905X