Spinning and tumbling motions in liquid crystals: Measurements of deuterium quadrupolar (T1Q) and spin-lattice (T1Z) relaxation times of selectively deuterated ferroelectric liquid crystals can be suitably analysed in terms of dynamic models to get detailed information on collective, overall (molecular spinning and tumbling) and internal motions (see picture). The availability of relaxation times measured at three Larmor frequencies and for two different molecular sites results in a remarkably improved reliability in the determination of the diffusion coefficients.
Dynamics of a Ferroelectric Liquid Crystal by means of 2H NMR Spectroscopy: A Multifrequency Relaxation Study
DOMENICI, VALENTINA;GEPPI, MARCO;VERACINI, CARLO ALBERTO;
2004-01-01
Abstract
Spinning and tumbling motions in liquid crystals: Measurements of deuterium quadrupolar (T1Q) and spin-lattice (T1Z) relaxation times of selectively deuterated ferroelectric liquid crystals can be suitably analysed in terms of dynamic models to get detailed information on collective, overall (molecular spinning and tumbling) and internal motions (see picture). The availability of relaxation times measured at three Larmor frequencies and for two different molecular sites results in a remarkably improved reliability in the determination of the diffusion coefficients.File in questo prodotto:
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