Activation energies of photoinduced unimolecular, bimolecular and termolecular processes on silica gel surfaces.pdf (297.34 kB)
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Activation energies of photoinduced unimolecular, bimolecular and termolecular processes on silica gel surfaces

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journal contribution
posted on 28.10.2014 by Sian L. Williams, David Worrall, Iain Kirkpatrick, Anisoara Vancea, Jiawei Pan
Activation energies for energy and electron transfer have been measured in various systems on silica gel. In the case of ion-electron recombination, a facile technique involving fluorescence recovery is described which complements diffuse reflectance spectroscopy in the study of these systems. In bimolecular anthracene/azulene systems, activation energies have been shown to be independent of pre-treatment temperature in the range 25–210 °C, demonstrating that physisorbed water plays little role in determining diffusion rates on silica gel. In a ternary anthracene/azulene/perylene system, we have for the first time presented comparative activation energies for the diffusion of azulene and its radical cation, and have shown a greater activation energy for diffusion of the latter species.

Funding

The authors would like to thank EPSRC for funding this project

History

School

  • Science

Department

  • Chemistry

Published in

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES

Volume

10

Issue

1

Pages

84 - 90 (7)

Citation

WILLIAMS, S.L. ... et al, 2011. Activation energies of photoinduced unimolecular, bimolecular and termolecular processes on silica gel surfaces. Photochemical and Photobiological Sciences, 10 (1), pp. 84 - 90.

Publisher

© Royal Society of Chemistry and Owner Societies

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2011

Notes

This article was published in the journal, Photochemical and Photobiological Sciences [© Royal Society of Chemistry and Owner Societies]. The definitive version is available at: http://dx.doi.org/10.1039/c0pp00256a

ISSN

1474-905X

Language

en

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