Abstract
A dielectric study has indicated that the inherent dielectric anisotropy (measured at 10 kHz) for the liquid crystals derived from hydroquinone or terephthalic acid is negative whereas it is positive for the phenyl benzoyloxybenzoate system. The dielectric anisotropy of these systems can be changed by appropriate structural modifications, for example, liquid crystals with negative dielectric anisotropies can be obtained by the incorporation of a cyano group in a lateral position or a cyanomethoxy group in a para position of the molecule.
Published Version
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