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Title: Activation energies of photoinduced unimolecular, bimolecular and termolecular processes on silica gel surfaces
Authors: Williams, Sian L.
Worrall, David R.
Kirkpatrick, Iain
Vancea, Anisoara
Pan, Jiawei
Issue Date: 2011
Publisher: © Royal Society of Chemistry and Owner Societies
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.
Abstract: 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.
Description: 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
Sponsor: The authors would like to thank EPSRC for funding this project
Version: Accepted for publication
DOI: 10.1039/c0pp00256a
URI: https://dspace.lboro.ac.uk/2134/16133
Publisher Link: http://dx.doi.org/10.1039/c0pp00256a
ISSN: 1474-905X
Appears in Collections:Published Articles (Chemistry)

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