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Title: Electron transfer reactions in ternary systems on silica gel surfaces: evidence for radical cation diffusion
Authors: Williams, Sian L.
Kirkpatrick, Iain
Worrall, David R.
Issue Date: 2010
Publisher: © Royal Society of Chemistry and Owner Societies
Citation: WILLIAMS, S.L., KIRKPATRICK, I. and WORRALL, D.R., 2010. Electron transfer reactions in ternary systems on silica gel surfaces: evidence for radical cation diffusion. Photochemical and Photobiological Sciences, 9 (7), pp. 937 - 941.
Abstract: Electron transfer reactions have been studied between 9-anthracenecarboxylic acid co-adsorbed with perylene on silica gel surfaces employing azulene as a molecular shuttle in order to facilitate hole transfer. In this paper we present for the first time a ternary system that unambiguously demonstrates an appreciable mobility of radical cations on the silica gel surface. Rates of hole transfer from the 9-anthracenecarboxylic acid radical cation to perylene via azulene have been studied using diffuse reflectance laser flash photolysis spectroscopy. Azulene has been shown to enhance the rate of electron transfer in the ternary system, proving significant mobility of the azulene and its radical cation species on silica gel surfaces. The data shows that the azulene radical cation can diffuse at an appreciable rate on the silica gel surface.
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/c0pp00049c
Version: Accepted for publication
DOI: 10.1039/c0pp00049c
URI: https://dspace.lboro.ac.uk/2134/16134
Publisher Link: http://dx.doi.org/10.1039/c0pp00049c
ISSN: 1474-905X
Appears in Collections:Published Articles (Chemistry)

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