Publication:
Intermolecular spin-spin coupling in highly fluorinated solutions of galvinoxyl free radical

dc.contributor.buuauthorOvalıoğlu, Hüseyin
dc.contributor.buuauthorPeksöz, Ahmet
dc.contributor.buuauthorKırımlı, Handan Engin
dc.contributor.buuauthorYalçıner, Aytaç
dc.contributor.departmentFen Edebiyat Fakültesi
dc.contributor.departmentFizik Bölümü
dc.contributor.researcheridAAI-6732-2021
dc.contributor.researcheridAAG-9772-2021
dc.contributor.scopusid24460278400
dc.contributor.scopusid23100976500
dc.contributor.scopusid24460574700
dc.contributor.scopusid14055078800
dc.date.accessioned2022-04-22T06:32:56Z
dc.date.available2022-04-22T06:32:56Z
dc.date.issued2010-03
dc.description.abstractOverhauser effect type dynamic nuclear polarization experiments were performed to study the solutions of the stable free radical Galvinoxyl in highly fluorinated aliphatic and aromatic solvents. Mainly the Overhauser effect, which normally arises due to both dipolar and scalar interactions between the unpaired electrons of the free radical molecules and fluorine nuclei of solvent molecules, occurs here in the solutions, which are examined in this study. As solvent, N-methyl-bistrifluoroacetamide and octafluorotoluene were used. The experiments were performed at a low field double resonance nuclear magnetic resonance (NMR) spectrometer, which operates at 1.53 mT. The NMR enhancements depend on competition between intermolecular magnetic interactions. We investigated the NMR enhancement factors depending on the electron spin resonance (ESR) frequency, which is modulated by the interaction between the electron spin of the free radical and the nuclear spins in its vicinity, at four different temperatures. It was found that the electron spin of the free radical interact very strongly with the nitrogen atom of the N-methyl-bistrifluoroacetamide molecule rather than hydrogen atoms of own radical molecule. Galvinoxyl free radical doesn't show this interaction with the other solvents at the weak field. This effect, which has been reported as an intramolecular interaction previously, is observed for the first time as an intermolecular coupling in this study.
dc.identifier.citationOvalıoğlu, H. vd. (2010). "Intermolecular spin-spin coupling in highly fluorinated solutions of galvinoxyl free radical". Zeitschrift fur Naturforschung. Section A Journal of Physical Sciences, 65(3), 254-262.
dc.identifier.endpage262
dc.identifier.issn0932-0784
dc.identifier.issn1865-7109
dc.identifier.issue3
dc.identifier.scopus2-s2.0-77954065784
dc.identifier.startpage254
dc.identifier.urihttp://hdl.handle.net/11452/25988
dc.identifier.volume65
dc.identifier.wos000277889000016
dc.indexed.wosSCIE
dc.language.isoen
dc.publisherWalter de Gruyter
dc.relation.bap2009/44
dc.relation.journalZeitschrift fur Naturforschung. Section A Journal of Physical Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDynamic nuclear polarization
dc.subjectOverhauser effect
dc.subjectFluorine-electron double resonance
dc.subjectFree radical
dc.subjectESR spectra
dc.subjectDynamic nuclear-polarization
dc.subjectElectron-double-resonance
dc.subjectLow magnetic-fields
dc.subjectParamagnetic-resonance
dc.subjectOximetry
dc.subjectSuspensions
dc.subjectRelaxation
dc.subjectScience
dc.subjectWeak
dc.subjectUnd
dc.subjectChemistry
dc.subjectPhysics
dc.subject.scopusMagic Angle Spinning; Spin Polarization; Cyclotron Resonance Devices
dc.subject.wosChemistry, physical
dc.subject.wosPhysics, multidisciplinary
dc.titleIntermolecular spin-spin coupling in highly fluorinated solutions of galvinoxyl free radical
dc.typeArticle
dc.wos.quartileQ3 (Physics, multidisciplinary)
dc.wos.quartileQ4 (Chemistry, physical)
dspace.entity.typePublication
local.contributor.departmentFen Edebiyat Fakültesi/Fizik Bölümü
local.indexed.atScopus
local.indexed.atWOS

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