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Spectrochim Acta A Mol Biomol Spectrosc. 2013 Aug;112:280-2. doi: 10.1016/j.saa.2013.04.039. Epub 2013 Apr 25.

Electron paramagnetic resonance studies of gamma-irradiated DL-alanine ethyl ester hydrochloride, L-theanine and L-glutamic acid dimethyl ester hydrochloride.

Author information

1
Faculty of Education, Dicle University, Diyarbakır, Turkey. hbaskan@dicle.edu.tr

Abstract

The electron paramagnetic resonance (EPR) of gamma irradiated powders of DL-alanine ethyl ester hydrochloride, L-theanine and L-glutamic acid dimethyl ester hydrochloride were investigated at room temperature. The observed paramagnetic species were attributed to the CH3ĊHCOOC2H5, -CH2ĊHCOOH and -CH2ĊHCOOCH3 radicals, respectively. Hyperfine structure constants and g-values were determined for these three radicals. Some spectroscopic properties and suggestions concerning the possible structure of the radicals were also discussed.

PMID:
23680512
DOI:
10.1016/j.saa.2013.04.039
[Indexed for MEDLINE]

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