The Vitamin E Radical Probed by Anion Photoelectron Imaging

Anstöter, C.S.; West, C.W.; Bull, J.N.; Verlet, J.R.R.

doi:10.1021/acs.jpcb.6b05271

The Vitamin E Radical Probed by Anion Photoelectron Imaging

Anstöter, C.S.; West, C.W.; Bull, J.N.; Verlet, J.R.R.

Authors

C.S. Anstöter

C.W. West

J.N. Bull

Professor Jan Verlet j.r.r.verlet@durham.ac.uk
Professor

Abstract

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.

Citation

Anstöter, C., West, C., Bull, J., & Verlet, J. (2016). The Vitamin E Radical Probed by Anion Photoelectron Imaging. Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry), 120(29), 7108-7113. https://doi.org/10.1021/acs.jpcb.6b05271

Journal Article Type	Article
Online Publication Date	Jul 1, 2016
Publication Date	Jul 28, 2016
Deposit Date	Oct 31, 2016
Publicly Available Date	Jul 1, 2017
Journal	Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry)
Print ISSN	1520-6106
Electronic ISSN	1520-5207
Publisher	American Chemical Society
Peer Reviewed	Peer Reviewed
Volume	120
Issue	29
Pages	7108-7113
DOI	https://doi.org/10.1021/acs.jpcb.6b05271

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Copyright 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 https://doi.org/10.1021/acs.jpcb.6b05271.