EPR studies of the free radicals generated in gamma irradiated amino acid derivatives

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dc.contributor.authorOsmanoglu, Y. Emre
dc.contributor.authorSutcu, Kerem
dc.date.accessioned2024-04-24T16:15:35Z
dc.date.available2024-04-24T16:15:35Z
dc.date.issued2017
dc.departmentDicle Üniversitesien_US
dc.description.abstractGamma irradiated powder forms of N-acetyl-DL-aspartic acid, N-carbamoyl-DL-aspartic acid and N-methyl-L-serine were investigated by electron paramagnetic resonance spectroscopy (EPR) at room temperature. In these compounds, the paramagnetic centers formed after irradiation were attributed to the HOOCCH2(C)over dotHCOOH, COOH(C)over dotHCHNH and HOCH2(C)over dotHCOOH radicals, respectively. The g values and the hyperfine coupling constants for the radical species are with values of g = 2.0038 +/- 0.0005, a(alpha) = 2.15 mT, a(beta)((1)) = 3.84 mT and a(beta)((2)) = 2.15 for the first radical, g = 2.0039 +/- 0.0005, a(alpha) = 1.7 mT, a(beta)((1)) = 0.62 mT, a(beta)((2)) = 0.54 mT, a(gamma) = 0.53 mT for the second radical and g = 2.0039 +/- 0.0005, a(beta)((1)) = 2.40 mT, a(beta)((2)) = 1.83 mT and a(alpha) = 1.83 mT for the third radical. The free radicals formed in three compounds were found to be stable for three months at room temperature. It was concluded that, spin density was concentrated predominantly in the 2p(pi) orbital of the carbon atom. (C) 2017 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.molstruc.2017.05.086
dc.identifier.endpage243en_US
dc.identifier.issn0022-2860
dc.identifier.issn1872-8014
dc.identifier.scopus2-s2.0-85019873846
dc.identifier.scopusqualityQ1
dc.identifier.startpage240en_US
dc.identifier.urihttps://doi.org/10.1016/j.molstruc.2017.05.086
dc.identifier.urihttps://hdl.handle.net/11468/15860
dc.identifier.volume1145en_US
dc.identifier.wosWOS:000404491700027
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofJournal of Molecular Structure
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectEpren_US
dc.subjectFree Radicalsen_US
dc.subjectAmino Acid Derivativesen_US
dc.subjectGamma Irradiationen_US
dc.titleEPR studies of the free radicals generated in gamma irradiated amino acid derivativesen_US
dc.titleEPR studies of the free radicals generated in gamma irradiated amino acid derivatives
dc.typeArticleen_US

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