Казанский (Приволжский) федеральный университет, КФУ
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ФЕДЕРАЛЬНЫЙ УНИВЕРСИТЕТ
 
SELF-DIFFUSION STUDIES BY INTRA- AND INTER-MOLECULAR SPIN-LATTICE RELAXOMETRY USING FIELD-CYCLING: LIQUIDS, PLASTIC CRYSTALS, POROUS MEDIA, AND POLYMER SEGMENTS
Форма представленияСтатьи в зарубежных журналах и сборниках
Год публикации2017
Языканглийский
  • Фаткуллин Наиль Фидаиевич, автор
  • Библиографическое описание на языке оригинала Kimmich R, Fatkullin N., Self-diffusion studies by intra- and inter-molecular spin-lattice relaxometry using field-cycling: Liquids, plastic crystals, porous media, and polymer segments//Progress in Nuclear Magnetic Resonance Spectroscopy. - 2017. - Vol.101, Is.. - P.18-50.
    Аннотация Field-cycling NMR relaxometry is a well-established technique for probing molecular dynamics in a frequency range from typically a few kHz up to several tens of MHz. For the interpretation of relaxometry data, it is quite often assumed that the spin-lattice relaxation process is of an intra-molecular nature so that rotational fluctuations dominate. However, dipolar interactions as the main type of couplings between protons and other dipolar species without quadrupole moments can imply appreciable inter-molecular contributions. These fluctuate due to translational displacements and to a lesser degree also by rotational reorientations in the short-range limit. The analysis of the inter-molecular proton spin-lattice relaxation rate thus permits one to evaluate self-diffusion variables such as the diffusion coefficient or the mean square displacement on a time scale from nanoseconds to several hundreds of microseconds.
    Ключевые слова NMR, soft mutter, dynamics, self-diffusion
    Название журнала Progress in Nuclear Magnetic Resonance Spectroscopy
    URL https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018502206&doi=10.1016%2fj.pnmrs.2017.04.001&partnerID=40&md5=a35c7a9db79d4064d1882fbdd77f8eee
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