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Scientific article
English

Time-Resolved Resonance Raman Studies of Triplet Geminate Ion Pair

Contributors

Vauthey, Eric; Phillips, David; Parker, Anthony W.

Published in

Journal of physical chemistry. C, vol. 96, no. 18, p. 7356-7360

Publication date

1992

Abstract

The electron transfer reaction between 9,lO-anthraquinone (AQ) excited to the lower triplet state and 1,2,4trimethoxybenzene (TMB) in solvents of different polarity has been studied by nanosecond time-resolved resonance Raman spectroscopy. In no solvent was there evidence for the formation of a triplet exciplex. All the observed vibrations were characterized as AQ* or TMB" modes. The frequency of the band assigned to the C-C stretch of TMB" has been found to be very dependent upon the environment and this effect has been used to observe the separation of the geminate ion pair into free ions in polar solvents. The data strongly suggest that the ions are at van der Waals contact in the geminate ion pair and not separated by solvent molecules.

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

VAUTHEY, Eric, PHILLIPS, David, PARKER, Anthony W. Time-Resolved Resonance Raman Studies of Triplet Geminate Ion Pair. In: Journal of physical chemistry. C, 1992, vol. 96, n° 18, p. 7356–7360. doi: 10.1021/j100197a041

Identifiers

Journal ISSN

1932-7447
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Technical informations

Creation

21/09/2009 16:19:31

First validation

21/09/2009 16:19:31

Update

14/03/2023 15:13:16

Status update

14/03/2023 15:13:16

Last indexation

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