Ultrafast energy transfer between the 3MLCT state of [Ru II(dmb) 2(bpy-an)] 2+ and the covalently appended anthracene

Jon R. Schoonover, Dana M. Dattelbaum, Anton Malko, Victor I. Klimov, Thomas J. Meyer, David J. Styers-Barnett, Erika Z. Gannon, Jeremy C. Granger, W. Steven Aldridge, John M. Papanikolas

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Abstract

The time scale for triplet-triplet energy transfer (EnT) between a Ru(II) chromophore and a ligand bound anthracene acceptor in [Ru II(dmb) 2(bpy-an)] 2+ (dmb = 4,4′-dimethyl-2,2-bipyridine; bpy-an = 4-(9-anthrylethylene), 4-methyl-2,2-bipyridine) has been measured using femtosecond transient absorption spectroscopy. The appearance of the anthracene excited state is monitored following photoexcitation to a metal-to-ligand charge transfer (MLCT) state via the ππ* absorption of the triplet excited state of anthracene. Our time-resolved experiments show the presence of fast, sub-100 ps energy transfer to the anthracene occurring on two characteristic time scales of 23 and 72 ps.

Original languageEnglish
Pages (from-to)2472-2475
Number of pages4
JournalJournal of Physical Chemistry A
Volume109
Issue number11
DOIs
Publication statusPublished - Mar 24 2005

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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    Schoonover, J. R., Dattelbaum, D. M., Malko, A., Klimov, V. I., Meyer, T. J., Styers-Barnett, D. J., Gannon, E. Z., Granger, J. C., Aldridge, W. S., & Papanikolas, J. M. (2005). Ultrafast energy transfer between the 3MLCT state of [Ru II(dmb) 2(bpy-an)] 2+ and the covalently appended anthracene. Journal of Physical Chemistry A, 109(11), 2472-2475. https://doi.org/10.1021/jp044444j