Abstract
Collective motions of mesogenic molecules, normally referred to as director fluctuations, and their impact on nuclear spin relaxation are discussed. We present a review of the basic formalism for the hydrodynamic model of director fluctuations as well as of the models for combining director fluctations with reorientational motion of individual molecules. The success and failure of such stochastic Markow models for describing nuclear spin relaxation are illustrated by attempts to explain the relaxation behaviour of the same deuteriated spin probe in two different theromotropic liquid crystals, both with nematic and smectic phases.
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Vold, R.R., Vold, R.L. (1994). The Effects of Director Fluctuations on Nuclear Spin Relaxation. In: Luckhurst, G.R., Veracini, C.A. (eds) The Molecular Dynamics of Liquid Crystals. NATO ASI Series, vol 431. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1168-3_9
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DOI: https://doi.org/10.1007/978-94-011-1168-3_9
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