An EPR Study On Cytosine Irradiated

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dc.contributor.authorUsta, Ayhan
dc.contributor.authorVural, Hasibe Cingilli
dc.contributor.authorUsta, Keziban
dc.contributor.authorAras, Erdal
dc.contributor.authorCeylan, Yusuf
dc.contributor.authorOzmen, Ayhan
dc.date.accessioned2020-03-26T18:13:44Z
dc.date.available2020-03-26T18:13:44Z
dc.date.issued2011
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractIn this study, paramagnetic centers over the cytosine were formed by photolysis then these centers were investigated using EPR method. EPR signals were not recorded from non-irradiated the cytosine, but irradiated polycrystalline exhibited complex EPR spectra. For obtaining of cytosine polycrystalline, novel crystallization method was performed on powder cytosine. Effective crystallization conditions were achieved by adjustment of the concentration of the metal ions, chemical solutions, NaCl, KCl, glacial asetic acid, nitric oxide, percloric acid, glutamic acid, and pH of buffer. Cytosine (C4H5N2O) polycrystalline obtained were irradiated with Co-60 - rays at room temperature for 24 and 72 h. At the sample irradiated for 72 h, the paramagnetic centers were determined between 120 and 450 K by X-band EPR spectrometer. The spectra were found to be dependent slightly on temperature. Two cation radicals were determined in the structure and these were called Radicals I and II. The g and hyperfine constants were found to be a(H2a) = 61 G, a(N2) = 9.39 G, a(N1) = 7.15 G, and g(1) = 2.0026 for the Radical I; a(H3) = 10.57 G, a(H1) = 3 G, a(N3) = 6.72 G, a(N1) = 5.36 G for, and g(2) = 2.0034 the Radical II. Copyright (C) 2010 John Wiley & Sons, Ltd.en_US
dc.description.sponsorshipScientific Research Projects Coordination Center of Selcuk University, Konya/TurkeySelcuk Universityen_US
dc.description.sponsorshipThis study was partially supported by the Scientific Research Projects Coordination Center of Selcuk University, Konya/Turkey.en_US
dc.identifier.doi10.1002/poc.1801en_US
dc.identifier.endpage639en_US
dc.identifier.issn0894-3230en_US
dc.identifier.issn1099-1395en_US
dc.identifier.issue8en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage635en_US
dc.identifier.urihttps://dx.doi.org/10.1002/poc.1801
dc.identifier.urihttps://hdl.handle.net/20.500.12395/26111
dc.identifier.volume24en_US
dc.identifier.wosWOS:000293594100004en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWILEYen_US
dc.relation.ispartofJOURNAL OF PHYSICAL ORGANIC CHEMISTRYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectcrystallizationen_US
dc.subjectcytosineen_US
dc.subjectEPRen_US
dc.subjectfree radicalen_US
dc.subjectirradiationen_US
dc.titleAn EPR Study On Cytosine Irradiateden_US
dc.typeArticleen_US

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