Measurement of Ultrafast Photoinduced Electron Transfer from Chemically Anchored Ru-Dye Molecules into Empty Electronic States in a Colloidal Anatase TiO2 Film

Electron transfer from the excited electronic singlet state of chemisorbed ruthenium(II) cis-di(isothiocyanato)bis(2,2‘-bipyridyl-4,4‘-dicarboxylate) into empty electronic states in a colloidal anatase TiO2 film was measured as a transient absorption signal of the injected hot electrons with a rise...

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Published in:The journal of physical chemistry. B 1997-08, Vol.101 (35), p.6799-6802
Main Authors: Hannappel, Thomas, Burfeindt, Bernd, Storck, Winfried, Willig, Frank
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Language:English
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container_issue 35
container_start_page 6799
container_title The journal of physical chemistry. B
container_volume 101
creator Hannappel, Thomas
Burfeindt, Bernd
Storck, Winfried
Willig, Frank
description Electron transfer from the excited electronic singlet state of chemisorbed ruthenium(II) cis-di(isothiocyanato)bis(2,2‘-bipyridyl-4,4‘-dicarboxylate) into empty electronic states in a colloidal anatase TiO2 film was measured as a transient absorption signal of the injected hot electrons with a rise time
doi_str_mv 10.1021/jp971581q
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Optical absorption of the anchored dye molecules led to the excited singlet state of the dye with a small admixture of charge transfer states. The electron transfer reaction reported here did not involve redistribution of vibrational excitation energy and was thus completely different from the well-known Marcus−Levich−Jortner−Gerischer type of electron transfer in the case of weak electronic interaction. It was also not a direct optical charge transfer transition from the donor to the acceptor level but rather an electron transfer reaction with an ultrashort but finite reaction time.</description><identifier>ISSN: 1520-6106</identifier><identifier>EISSN: 1520-5207</identifier><identifier>DOI: 10.1021/jp971581q</identifier><language>eng</language><publisher>American Chemical Society</publisher><ispartof>The journal of physical chemistry. 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title Measurement of Ultrafast Photoinduced Electron Transfer from Chemically Anchored Ru-Dye Molecules into Empty Electronic States in a Colloidal Anatase TiO2 Film
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