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Volume 127, 2004
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New paradigm of transition metal polypyridine complex photochemistry

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Abstract

Using polarization sensitive ultrafast transient absorption spectroscopy we have studied energy transfer and excited state relaxation pathways in a tetranuclear transition metal [(osmium)(ruthenium)3] polypyridine complex. Contrary to the generally accepted picture of transition metal complex photochemistry we find that ultrafast energy transfer (≤60 fs) occurs from the excited singlet MLCT state of the peripheral Ru-chromophores to the central Os-core, in efficient competition with intersystem crossing. Energy transfer between relaxed triplet MLCT states is more than an order of magnitude slower (600 fs).

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Article information


Submitted
10 Dec 2003
Accepted
09 Jan 2004
First published
16 Jul 2004

Faraday Discuss., 2004,127, 295-305
Article type
Paper

New paradigm of transition metal polypyridine complex photochemistry

J. Andersson, F. Puntoriero, S. Serroni, A. Yartsev, T. Pascher, T. Polivka, S. Campagna and V. Sundström, Faraday Discuss., 2004, 127, 295
DOI: 10.1039/B316160A

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