Journal
LIQUID CRYSTALS
Volume 45, Issue 8, Pages 1242-1249Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2018.1427810
Keywords
Nematic liquid crystal; eutectic mixture; high birefringence; permittivity; microwave
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We report on the developed liquid crystal (LC) compositions with large optical anisotropy and low melting point on the basis of synthesised quaterphenyl and quinquiphenyl LC compounds containing lateral substituents. Optical and dielectric anisotropies of synthesised compounds were studied to select the most optimal compounds for high-frequency applications. As a result of the research, base matrices with a wide range of the nematic phase were developed and their mesomorphic and physicochemical properties were investigated. Based on the experimental data, the influence of various fragments of molecules on the magnitude of permittivity in the high-frequency region, as well as on the loss tangent of LCs was established. [GRAPHICS]
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