Syntheses and mesomorphic properties of laterally fluorinatedphenyl isothiocyanatotolanes and their high birefringent mixtures |
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| Authors: | J. Dziaduszek R. D?browski A. Zió?ek S. Gauza S.T. Wu |
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| Affiliation: | (1) Institute of Chemistry, Military University of Technology, 00-908 Warsaw, Poland;(2) College of Optics and Photonics/CREOL, University of Central Florida, Orlando, FL 32816, USA |
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| Abstract: | Syntheses and mesomorphic properties of di-, tri- and tetrafluorosubstituted 4′-(4-alkylphenyl)-4-isothiocyanatotolanes are described. Four fluorine substituted compounds in the position 2′, 3′, 3, and 5 show stronger nematic character than difluorosubstituted ones in the position 3, 5 or 2′, 3′. Example of high birefringence nematic mixture and its properties are given. |
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| Keywords: | liquid crystals isothiocyanatophenyltolanes fluorine substitution phase transition enthalpy transition high bi-refringence nematic mixture |
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