Dynamic nuclear polarization in some aliphatic and aromatic solutions as studied by fluorine-electron double resonance

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dc.contributor.authorÇimenoǧlu, Mehmet Akif
dc.contributor.buuauthorPeksöz, Ahmet
dc.contributor.buuauthorYalçıner, Aytaç
dc.contributor.departmentUludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü.tr_TR
dc.contributor.researcheridAAG-9772-2021tr_TR
dc.contributor.scopusid23100976500tr_TR
dc.contributor.scopusid14055078800tr_TR
dc.date.accessioned2022-06-23T12:12:46Z
dc.date.available2022-06-23T12:12:46Z
dc.date.issued2008-01
dc.description.abstractDynamic nuclear polarization experiments were performed to study the solutions of the stable free radical alpha,gamma-Bisdiphenylene-beta-phenyl allyl complex with benzene (1:1) in some highly fluorinated aliphatic and aromatic solvents. In solutions examined in this study, 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 mainly. 1-Iodotridecafluorohexane, 2,2,3,4,4,4-Hexafluoro-1-butanol, N-methyl-bis-trifluoroacetamide, hexafluoroacetylacetone, octafluorotoluene, and hexafluorobenzene were used as the solvents. The experiments were performed at a low field double resonance NMR spectrometer, which operates at 1.53 mT. The NMR enhancements depend on competition between intermolecular magnetic interactions. The measurements were performed at four different temperatures to test the dipolar and the scalar part of the coupling between the fluorine nucleus (F-19) and the unpaired electron. It was found that the dipolar interactions are more effective for the aliphatic solvents, while the scalar interactions are more effective for the aromatics. The nuclear-electron coupling parameter varies between 0.018 and 0.157 in all aliphatic solvents and between -0.063 and -0.035 in aromatic solvents.en_US
dc.identifier.citationPeksöz, A. vd. (2008). "Dynamic nuclear polarization in some aliphatic and aromatic solutions as studied by fluorine-electron double resonance". Journal of Dispersion Science and Technology, 29(1), 40-45.en_US
dc.identifier.endpage45tr_TR
dc.identifier.issn0193-2691
dc.identifier.issue1tr_TR
dc.identifier.scopus2-s2.0-37549001728tr_TR
dc.identifier.startpage40tr_TR
dc.identifier.urihttps://doi.org/10.1080/01932690701686809
dc.identifier.urihttps://www.tandfonline.com/doi/full/10.1080/01932690701686809
dc.identifier.urihttp://hdl.handle.net/11452/27373
dc.identifier.volume29tr_TR
dc.identifier.wos000251991200005tr_TR
dc.indexed.scopusScopusen_US
dc.indexed.wosSCIEen_US
dc.language.isoenen_US
dc.publisherTaylor & Francisen_US
dc.relation.bapF-2003/5tr_TR
dc.relation.collaborationSanayitr_TR
dc.relation.journalJournal of Dispersion Science and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergitr_TR
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDouble resonanceen_US
dc.subjectDynamic nuclear polarizationen_US
dc.subjectFluorine-electron double resonanceen_US
dc.subjectOverhauser effecten_US
dc.subjectAromatic compoundsen_US
dc.subjectElectronsen_US
dc.subjectFluorineen_US
dc.subjectFree radicalsen_US
dc.subjectMolecular interactionsen_US
dc.subjectPolarizationen_US
dc.subjectSolventsen_US
dc.subjectIntermolecular magnetic interactionsen_US
dc.subjectOverhauser effecten_US
dc.subjectPolarizationen_US
dc.subjectLow magnetic-fieldsen_US
dc.subjectFree-radicalsen_US
dc.subjectOximetryen_US
dc.subjectChemistryen_US
dc.subject.scopusMagic Angle Spinning; Spin Polarization; Cyclotron Resonance Devicesen_US
dc.subject.wosChemistry, physicalen_US
dc.titleDynamic nuclear polarization in some aliphatic and aromatic solutions as studied by fluorine-electron double resonanceen_US
dc.typeArticle
dc.wos.quartileQ4en_US

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