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The vitamin E radical probed by anion photoelectron imaging.

Anstöter, C. S. and West, C. W. and Bull, J. N. and Verlet, J. R. R. (2016) 'The vitamin E radical probed by anion photoelectron imaging.', Journal of physical chemistry B., 120 (29). pp. 7108-7113.


The biological antioxidant activity of vitamin E has been related to the stability of the tocopheroxyl radical. Using anion photoelectron imaging and electronic structure calculations, the four tocopheroxyl components of vitamin E have been studied in the gas phase and have yielded the adiabatic electron affinity of the α-, β/γ-, and δ-tocopheroxyl radicals. Using these values, the bond dissociation enthalpy of the O–H bond of tocopherol has been estimated and is consistent with previous studies and with the trends in biological activity. Differences in the photoelectron angular distributions have been interpreted to result from changes in the symmetry of the molecular orbitals from which the electron was detached.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Publisher statement:This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of physical chemistry B, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Date accepted:No date available
Date deposited:31 October 2016
Date of first online publication:01 July 2016
Date first made open access:01 July 2017

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