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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/16135

Title: Probing the interplay between factors determining reaction rates on silica gel using termolecular systems
Authors: Kirkpatrick, Iain
Worrall, David R.
Williams, Sian L.
Buck, Craig J.T.
Meseguer, Rafael G.
Issue Date: 2012
Publisher: © Royal Society of Chemistry and Owner Societies
Citation: KIRKPATRICK, I. ... et al, 2012. Probing the interplay between factors determining reaction rates on silica gel using termolecular systems. Photochemical and Photobiological Sciences, 11 (10), pp. 1585 - 1591.
Abstract: In this study we have compared energy and electron transfer reactions in termolecular systems using a nanosecond diffuse reflectance laser flash photolysis technique. We have previously investigated these processes on silica gel surfaces for bimolecular systems and electron transfer in termolecular systems. The latter systems involved electron transfer between three arene molecules with azulene acting as a molecular shuttle. In this study we present an alternative electron transfer system using trans β-carotene as an electron donor in order to effectively immobilise all species except the shuttle, providing the first unambiguous evidence for radical ion mobility. In the energy transfer system we use naphthalene, a structural isomer of azulene, as the shuttle, facilitating energy transfer from a selectively excited benzophenone sensitiser to 9-cyanoanthracene. Bimolecular rate constants for all of these processes have been measured and new insights into the factors determining the rates of these reactions on silica gel have been obtained.
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/c2pp25171j
Sponsor: The authors would like to thank EPSRC for funding this project.
Version: Accepted for publication
DOI: 10.1039/c2pp25171j
URI: https://dspace.lboro.ac.uk/2134/16135
Publisher Link: http://dx.doi.org/10.1039/c2pp25171j
ISSN: 1474-905X
Appears in Collections:Published Articles (Chemistry)

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