Laser Chemistry

Laser Chemistry / 1999 / Article
Special Issue

Proceedings of the Eighth Conference on Time-Resolved Vibrational Spectroscopy

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Volume 19 |Article ID 092415 | https://doi.org/10.1155/1999/92415

T. Fournier, G. D. Scholes, I. R. Gould, S. M. Tavender, D. Phillips, A. W. Parker, "Triplet 1-Nitronaphthalene and Competitive Energy and Electron Transfer Reactions With Trans-Stilbene", Laser Chemistry, vol. 19, Article ID 092415, 5 pages, 1999. https://doi.org/10.1155/1999/92415

Triplet 1-Nitronaphthalene and Competitive Energy and Electron Transfer Reactions With Trans-Stilbene

Received04 May 1997

Abstract

A time resolved resonance Raman (TR3) study of 1-nitronaphthalene (1NN) first triplet excited state in various solvents is combined with ab initio calculations to determine the nature and the geometry of this state in environments of different polarity. A transient absorption and TR3 study of the reactions of triplet 1NN with trans-stilbene (tS) in solution in both non-polar and polar solvents is reported. In polar solution, 31NN acts as an electron acceptor whereas in non-polar solution only energy transfer to tS is observed. Moreover, at high concentrations of tS, the radical cation tS+ reacts with ground-state tS to form a dimer radical cation (tS2)+. Differences between the Raman spectra of the monomeric and the dimeric radical cations are reported in the 1500–1650 cm-1 region. The switch from energy to electron transfer when going from nonpolar to polar solutions is discussed in terms of the Marcus-Hush theory of electron transfer.

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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