Dielectric and Conductivity Anisotropy in Liquid Crystalline Phases, of Strongly Polar Thioesters
A. Mikułko a, M. Fraś a, M. Marzec a, S. Wróbel a, M.D. Ossowska-Chruściel b and J. Chruściel b
a Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
b Institute of Chemistry, University of Podlasie, 3-go Maja 54, 08-110 Siedlce, Poland
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Received: 3 06 2007;
The main objective of this paper is to study dielectric properties of two compounds of acronyms 5OSCl and 6OSCl having strongly polar bond (C-Cl) at para position. Dielectric measurements were done in the frequency range from 40 Hz to 15 MHz. The dielectric spectra were measured for two principal alignments. For homeotropic alignment, the reorientation of molecule around the short molecular axis was observed. Both substances studied exhibit large positive dielectric anisotropy and the anisotropy of conductivity was obtained in smectic A as well as nematic phase.
DOI: 10.12693/APhysPolA.113.1155
PACS numbers: 61.30.-v, 61.30.Eb, 77.22.-d, 66.10.Ed