Abstract
New data for the photoisomerization dynamics of t-stilbene and 4,4′-dimethoxystilbene in polar solvents are reported. These data demonstrate that in n-alkyl nitriles, nonassociated polar solvents, it is possible to extract a solvated barrier for the isomerization. This result is contrasted with recent studies in n-alkyl alcohols, associated polar solvents, where this separation is not possible and clarifies the origin of the changing barrier height in n-alkyl alcohols. Comparison of reduced isomerization rates with models of chemical reaction dynamics in solution are drawn. Good agreement of the data with a coupled oscillator model is found.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:10 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 10, 2024, 4:02 a.m.) |
Indexed | 1 year, 6 months ago (Feb. 10, 2024, 10:24 a.m.) |
Issued | 36 years, 6 months ago (Feb. 15, 1989) |
Published | 36 years, 6 months ago (Feb. 15, 1989) |
Published Print | 36 years, 6 months ago (Feb. 15, 1989) |
@article{Sivakumar_1989, title={Solvent dielectric effects on isomerization dynamics: Investigation of the photoisomerization of 4,4′-dimethoxystilbene and t-stilbene in n-alkyl nitriles}, volume={90}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.455971}, DOI={10.1063/1.455971}, number={4}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Sivakumar, N. and Hoburg, E. A. and Waldeck, D. H.}, year={1989}, month=feb, pages={2305–2316} }