Femtosecond Dynamics of Excited-State Evolution in [Ru(bpy) 3 ] 2+
Authors:
- 3 January 1997
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 275 (5296) , 54-57
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.Keywords
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