Dielectric Dispersion in 4′-n-Alkyl-4-Cyanobiphyenyls
- 1 January 1977
- journal article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 42 (1) , 185-192
- https://doi.org/10.1080/15421407708084506
Abstract
Restricted Access.The dispersion of b.epsipar in the frequency range of 1-10 MHz has been studied for 4'-n-alkyl-4-cyanobiphenyls (pentyl to octyl) at different temperatures in teh nematic phase. It is established for the first time that the relaxation frequency at a common relative temperature (TNI - T) for the successive homologues shows an alternation similar to that exhibited by the nematic-isotropic transition point or the orientational order parameter. The activation energy evaluated from the Arrhenius plot is found to be the same (sim 0.56 eV) for the compoundsKeywords
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