Slow excited state injection and charge recombination at star-shaped ruthenium polypyridyl compounds—TiO2 interfaces

Patrik G. Johansson; Yongyi Zhang; Maria Abrahamsson; Gerald J. Meyer; Elena Galoppini

doi:10.1039/C1CC11210D

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Slow excited state injection and charge recombination at star-shaped ruthenium polypyridyl compounds—TiO₂ interfaces†

Patrik G. Johansson,^a Yongyi Zhang,^b Maria Abrahamsson,^a Gerald J. Meyer*^a and Elena Galoppini*^b

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* Corresponding authors

^a Department of Chemistry and Material Science & Engineering, John Hopkins University, 3400 North Charles St, Baltimore, USA
E-mail: meyer@jhu.edu
Fax: +1 410-516-8920
Tel: +1 410-515-7319

^b Department of Chemistry, Rutgers University, 73 Warren St, Newark, USA
E-mail: galoppini@andromeda.rutgers.edu
Fax: +1 973-353-1264
Tel: +1 973-353-5317

Abstract

The excited states of two star-shaped nanometre-sized ruthenium polypyridyl compounds were largely unchanged when anchored to nanocrystalline TiO₂ thin films due to a highly symmetrical and rigid ligand structure that isolated the chromophoric core from the semiconductor. Interfacial electron transfer occurred on unusually slow time scales.

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Article information

DOI: https://doi.org/10.1039/C1CC11210D
Article type: Communication
Submitted: 28 Feb 2011
Accepted: 13 Apr 2011
First published: 09 May 2011

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Chem. Commun., 2011,47, 6410-6412

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Slow excited state injection and charge recombination at star-shaped ruthenium polypyridyl compounds—TiO₂ interfaces

P. G. Johansson, Y. Zhang, M. Abrahamsson, G. J. Meyer and E. Galoppini, Chem. Commun., 2011, 47, 6410 DOI: 10.1039/C1CC11210D

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