95-670 GHz EPR studies of canthaxanthin radical cation stabilized on a silica-alumina surface

Authors :: Konovalova, Tatyana A.
Kryzystek, J.
Bratt, Peter J.
Tol, J. van
Brunel, Louis-Claude
Kispert, Lowell D.
Source :: Journal of Physical Chemistry B. July 15, 1999, Vol. 103 Issue 28, p5782, 5 p.
Publication Year :: 1999
Abstract: Canthaxanthin radical cation chemically generated on silica-alumina underwent 95-670 GHz EPR measurements at 5 K. The 327 GHz and higher frequency EPR spectra were resolved into two main components of the g tensor. Spectral simulation indicated this to be the result of g anisotropy. The results showed that the 327-670 GHz EPR measurements were sufficient to resolve the g tensors of C-H containing pi radicals in powder and frozen glasses.

Subjects :: Cations -- Research
Canthaxanthin -- Research
Carotenoids -- Research
Chemicals, plastics and rubber industries

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