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Mesomorphic and dielectric properties of the systems based on nematic cyanobiphenyls

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Abstract

Nematic cyanobiphenyls have been modified with small amount of polar additives. Phase transition temperatures as a function of composition of the prepared mixtures have been determined by polarization thermomicrscopy. The dielectric constant as a function of temperature has been determined via dielcometry measurements, and the dielectric anisotropy of the studied mixtures has been revealed. Broadening of the mesophase existence temperature range and enhancement of the dielectric anisotropy of the nematic biphenyls upon addition of polar dopants results from the supramolecular self-assembly via hydrogen bonding.

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Correspondence to S. A. Kuvshinova.

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Original Russian Text © S.A. Kuvshinova, I.V. Novikov, V.A. Burmistrov, V.V. Aleksandriiskii, O.I. Koifman, 2015, published in Zhurnal Obshchei Khimii, 2015, Vol. 85, No. 4, pp. 582–587.

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Kuvshinova, S.A., Novikov, I.V., Burmistrov, V.A. et al. Mesomorphic and dielectric properties of the systems based on nematic cyanobiphenyls. Russ J Gen Chem 85, 827–832 (2015). https://doi.org/10.1134/S107036321504009X

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  • DOI: https://doi.org/10.1134/S107036321504009X

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