Abstract
Theoretical and experimental aspects of spin relaxation in liquid crystals are considered here, with primary emphasis on the motional narrowing regime. ESR studies of translational motion in mesophases are also described.
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This is the conventional form for the lifetime of reacting pairs. It is based upon rewriting (i;)-` _ 410,d1 AV, where A V is the reaction volume. Early theories arbitrarily defined A V as the total volume swept by the interacting pair, i.e., (4/3)7cd3, but detailed studies [32] have shown that A V 4nd Z Ar j , which is the annular volume of the contact region, i.e., J(r) equals J 0 from d to d + Ars, and is zero otherwise. This yields i; = dAr J ID T .
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Freed, J.H., Nayeem, A., Rananavare, S.B. (1994). ESR and Molecular Motions in Liquid Crystals: Motional Narrowing. 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_12
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DOI: https://doi.org/10.1007/978-94-011-1168-3_12
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