2 August 1995 Enaminoketone liquid crystals having trifluoromethyl terminal substituents
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Proceedings Volume 2372, Liquid Crystals: Materials Science and Applications; (1995) https://doi.org/10.1117/12.215548
Event: Liquid Crystals: Materials Science and Applications, 1994, Zakopane, Poland
Abstract
Two homologous series of enaminoketone mesogens terminated with F3C/OCnH2n+1 (perfluoromethyl series) and F3CO/OCnH2n+1 groups (perfluoromethoxyl series) were synthesized and examined by optical and DSC methods. For the perfluoromethyl series, Sm-A and Cry-B smectic phases were observed and additional tilted phases appeared for short homologues (n < 7). For the perfluoromethoxyl series, the phase sequence of Sm-A, Cry-B and tilted smectic phases exist even for long examined homoglogues (to n equals 18). The occurrence of inverted phase sequence Cry-G - Sm-F - Cry- B and the presence of new orthogonal biaxial phase has also been observed for the last series.
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Adam Krowczynski, Adam Krowczynski, Jadwiga Szydlowska, Jadwiga Szydlowska, Ewa Gorecka, Ewa Gorecka, Wieslaw Pyzuk, Wieslaw Pyzuk, } "Enaminoketone liquid crystals having trifluoromethyl terminal substituents", Proc. SPIE 2372, Liquid Crystals: Materials Science and Applications, (2 August 1995); doi: 10.1117/12.215548; https://doi.org/10.1117/12.215548
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