Femtosecond Dynamics of Excited-State Evolution in [Ru(bpy) 3 ] 2+-Reference-Cited by-同舟云学术

Femtosecond Dynamics of Excited-State Evolution in [Ru(bpy) 3 ] 2+

Published:1997-01-03 Issue:5296 Volume:275 Page:54-57
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Damrauer Niels H.¹,Cerullo Giulio²,Yeh Alvin²,Boussie Thomas R.¹,Shank Charles V.³,McCusker James K.¹

Affiliation:

1. N. H. Damrauer, T. R. Boussie, J. K. McCusker, Department of Chemistry, University of California, Berkeley, CA 94720, USA.

2. G. Cerullo and A. Yeh, Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

3. C. V. Shank, Department of Chemistry, University of California, Berkeley, CA 94720, and Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

Abstract

Time-resolved absorption spectroscopy on the femtosecond time scale has been used to monitor the earliest events associated with excited-state relaxation in tris-(2,2′-bipyridine)ruthenium(II). The data reveal dynamics associated with the temporal evolution of the Franck-Condon state to the lowest energy excited state of this molecule. The process is essentially complete in ∼300 femtoseconds after the initial excitation. This result is discussed with regard to reformulating long-held notions about excited-state relaxation, as well as its implication for the importance of non-equilibrium excited-state processes in understanding and designing molecular-based electron transfer, artificial photosynthetic, and photovoltaic assemblies in which compounds of this class are currently playing a key role.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference54 articles.

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3. Owrutsky J. C., Li M., Hochstrasser R. M., J. Phys. Chem. 99, 4842 (1995). and references therein.

4. Durrant J. R. Tachibana Y. Moser J. Grätzel M. Klug D. R. in (1) pp. 140–141;

5. Femtosecond Electron-Transfer Dynamics at a Sensitizing Dye−Semiconductor (TiO2) Interface

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