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Nuclear Spin Relaxation Formalism for Liquid Crystals

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The Molecular Dynamics of Liquid Crystals

Part of the book series: NATO ASI Series ((ASIC,volume 431))

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Abstract

The background required for characterising molecular dynamics in liquid crystals by NMR spectroscopy and nuclear spin relaxation is outlined. The need for multiple Euler angle transformations to describe the complex molecular motion is discussed, and illustrated by a description of deuterium relaxation in the presence of rotational diffusion of deuteriated spin probes. By selecting deuteriated solutes with and without internal degrees of motion and with very different rotational correlation times we illustrate the complexity of analysing relaxation behaviour in mesogenic molecules compared with that of small rigid solutes. The relaxation of the latter is much more sensitive to contributions from director fluctuations in the radio frequency region compared with that of the mesogenic molecules themselves for which multiple relaxation pathways exist.

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Authors and Affiliations

  1. Department of Chemistry, University of California, San Diego, La Jolla, California, 92093, USA

    R. L. Vold & R. R. Vold

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  1. R. L. Vold
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  2. R. R. Vold
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Editors and Affiliations

  1. Department of Chemistry, University of Southampton, UK

    G. R. Luckhurst

  2. Department of Chemistry and Industrial Chemistry, University of Pisa, Italy

    C. A. Veracini

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Vold, R.L., Vold, R.R. (1994). Nuclear Spin Relaxation Formalism for Liquid Crystals. 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_7

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  • DOI: https://doi.org/10.1007/978-94-011-1168-3_7

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-4509-4

  • Online ISBN: 978-94-011-1168-3

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