Influence of smectic order on the static dielectric permittivity of liquid crystals
- 1 September 1974
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 61 (5), 1985-1989
- https://doi.org/10.1063/1.1682199
Abstract
In some p, p′-di-n-alkyl-azoxybenzenes, an anomalous decrease of ε‖ and increase of ε⊥ is observed when the nematic phase is cooled to below the nematic/smectic-A transition temperature. This is attributed to dipole-dipole interaction, which becomes especially important for neighboring molecules in the same smectic layer. The Kirkwood-Fröhlich theory for the dielectric properties of anisotropic polar liquids is used in order to account for these interactions.Keywords
This publication has 9 references indexed in Scilit:
- Dielectric Constants and Molecular Structure of Nematic Liquid CrystalsZeitschrift für Naturforschung A, 1974
- Dielectric Properties of Di--Heptyl Azoxybenzene in the Nematic and in the Smectic-PhasesPhysical Review Letters, 1974
- On the derivation of the Kirkwood-Fröhlich equationPhysica, 1973
- First- and second-order nematic-smectic A phase transitions in the series of DI-n-alkyl azoxybenzenesSolid State Communications, 1973
- Transition entropies and mesomorphic behavior of p-disubstituted azoxybenzenesThe Journal of Physical Chemistry, 1973
- Low Melting Liquid Crystallinep,p'-di-n-Alkylazoxy- and AzobenzenesMolecular Crystals and Liquid Crystals, 1972
- Structure and physical properties of liquid crystalsC R C Critical Reviews in Solid State Sciences, 1970
- X-ray Photographic Studies of Liquid Crystals I. A Cybotactic Nematic PhaseMolecular Crystals and Liquid Crystals, 1970
- Eine einfache Theorie der dielektrischen Eigenschaften homogen orientierter kristallinflüssiger Phasen des nematischen TypsZeitschrift für Naturforschung A, 1961