title: Electron paramagnetic resonance studies of gamma-irradiated DL-alanine ethyl ester hydrochloride, L-theanine and L-glutamic acid dimethyl ester hydrochloride.
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.
authors.affiliation: Faculty of Education, Dicle University, Diyarbakır, Turkey. hbaskan@dicle.edu.tr
authors.forename: M Halim
authors.initials: MH
authors.lastname: Başkan
authors.forename: Murat
authors.initials: M
authors.lastname: Aydın
mesh_terms: D000409:Alanine / Q000031:analogs & derivatives*; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000737:chemistry*; D005720:Gamma Rays; D005971:Glutamates / Q000737:chemistry*
chemical_list: D005609:Free Radicals; D005971:Glutamates; C035873:glutamic acid dimethyl ester; C026166:theanine; D000409:Alanine