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Solvent-Controlled Acceleration of Electron Transfer in Binary Mixtures

Pugzlys, Audrius and Hartog, Harald P den and Baltuska, Andrius and Pshenichnikov, Maxim S and Umapathy, Siva and Wiersma, Douwe A (2001) Solvent-Controlled Acceleration of Electron Transfer in Binary Mixtures. In: Journal of Physical Chemistry A, 105 (51). pp. 11407-11413.

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We report a 5-fold acceleration of the backward intermolecular electron transfer between a rhodamine 800 dye molecule and N,N-dimethylaniline (DMA). This effect results from the controlled variation of the solvent dynamical properties in binary mixtures of DMA and acetonitrile. The observed acceleration reflects the competition between solvent-controlled and nonadiabatic electron transfer in the limit of barrierless reaction. A linear dependence of the electron-transfer time on the longitudinal relaxation time, as predicted by the outer sphere electron-transfer model by Rips and Jortner [Rips, I.; Jortner, J. J. Chem. Phys. 1987, 87, 2090.], is clearly observed.

Item Type: Journal Article
Publication: Journal of Physical Chemistry A
Publisher: American Chemical Society
Additional Information: Copyright of this article belongs to American Chemical Society.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 18 Aug 2008
Last Modified: 19 Sep 2010 04:49
URI: http://eprints.iisc.ac.in/id/eprint/15548

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