EPR study of gamma irradiated DL-methionine sulfone single crystals
JOURNAL OF MOLECULAR STRUCTURE, cilt.1102, ss.186-189, 2015 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 1102
- Basım Tarihi: 2015
- Doi Numarası: 10.1016/j.molstruc.2015.08.063
- Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.186-189
- Anahtar Kelimeler: EPR, Gamma-irradiation, Butyric acid, Amine radicals, dl-methionine sulfone, RADIATION, IDENTIFICATION, RESONANCE
- Ondokuz Mayıs Üniversitesi Adresli: Evet
Özet
Electron paramagnetic resonance (EPR) study of gamma irradiated dl-2-amino-4-(Methylsulfonyl) butyric acid (dl-methionine sulfone, hereafter dl-ABA) single crystals and powder was performed at room temperature. It has been found that this compound indicates the existence of CO2- and NH2 radicals after gamma-irradiation. While g and hyperfine splitting values for the NH2 radical were observed, for the CO2- radical, only the g factor was measured. The EPR spectra have shown that NH2 radical has two groups each having two distinct sites and CO2- radical has one site. The principal g and hyperfine values for all sites were analyzed. (C) 2015 Elsevier B.V. All rights reserved.