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Electron spin dynamics and spin-lattice relaxation of trityl radicals in frozen solutions

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dc.contributor.authorChen, Hanjiao
dc.contributor.authorMaryasov, Alexander G.
dc.contributor.authorRogozhnikova, Olga Yu.
dc.contributor.authorTrukhin, Dmitry V.
dc.contributor.authorTormyshev, Victor M.
dc.contributor.authorBowman, Michael K.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherVoevodsky Institute of Chemical Kinetics & Combustion SB RAS
dc.contributor.otherRussian Academy of Sciences
dc.contributor.otherVorozhtsov Novosibirsk Institute of Organic Chemistry
dc.contributor.otherNovosibirsk State University
dc.date.accessioned2023-09-28T19:13:53Z
dc.date.available2023-09-28T19:13:53Z
dc.date.issued2016
dc.description.abstractElectron spin-lattice relaxation of two trityl radicals, d(24)-OX063 and Finland trityl, were studied under conditions relevant to their use in dissolution dynamic nuclear polarization (DNP). The dependence of relaxation kinetics on temperature up to 100 K and on concentration up to 60 mM was obtained at X-and W-bands (0.35 and 3.5 Tesla, respectively). The relaxation is quite similar at both bands and for both trityl radicals. At concentrations typical for DNP, relaxation is mediated by excitation transfer and spin-diffusion to fast-relaxing centers identified as triads of trityl radicals that spontaneously form in the frozen samples. These centers relax by an Orbach-Aminov mechanism and determine the relaxation, saturation and electron spin dynamics during DNP.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationChen, H., Maryasov, A. G., Rogozhnikova, O. Yu., Trukhin, D. V., Tormyshev, V. M., & Bowman, M. K. (2016). Electron spin dynamics and spin–lattice relaxation of trityl radicals in frozen solutions. In Physical Chemistry Chemical Physics (Vol. 18, Issue 36, pp. 24954–24965). Royal Society of Chemistry (RSC). https://doi.org/10.1039/c6cp02649d
dc.identifier.doi10.1039/c6cp02649d
dc.identifier.orcidhttps://orcid.org/0000-0003-4975-9993
dc.identifier.orcidhttps://orcid.org/0000-0003-3464-9409
dc.identifier.orcidhttps://orcid.org/0000-0002-3857-2261
dc.identifier.urihttps://ir.ua.edu/handle/123456789/11106
dc.languageEnglish
dc.language.isoen_US
dc.publisherRoyal Society of Chemistry
dc.subjectDIPOLE-DIPOLE INTERACTIONS
dc.subjectBROADENED EPR LINES
dc.subjectNUCLEAR-POLARIZATION
dc.subjectTRIARYLMETHYL RADICALS
dc.subjectTHEORETICAL ASPECTS
dc.subjectCROSS-RELAXATION
dc.subjectSOLID-STATE
dc.subjectGLASSY MATRICES
dc.subjectIRIDIUM SALTS
dc.subjectDNP
dc.subjectChemistry, Physical
dc.subjectPhysics, Atomic, Molecular & Chemical
dc.titleElectron spin dynamics and spin-lattice relaxation of trityl radicals in frozen solutionsen_US
dc.typeArticle
dc.typetext

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