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Proceedings Paper

Enaminoketone liquid crystals having trifluoromethyl terminal substituents
Author(s): Adam Krowczynski; Jadwiga Szydlowska; Ewa Gorecka; Wieslaw Pyzuk
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Paper 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.

Paper Details

Date Published: 2 August 1995
PDF: 5 pages
Proc. SPIE 2372, Liquid Crystals: Materials Science and Applications, (2 August 1995); doi: 10.1117/12.215548
Show Author Affiliations
Adam Krowczynski, Warsaw Univ. (Poland)
Jadwiga Szydlowska, Warsaw Univ. (Poland)
Ewa Gorecka, Warsaw Univ. (Poland)
Wieslaw Pyzuk, Warsaw Univ. (Poland)

Published in SPIE Proceedings Vol. 2372:
Liquid Crystals: Materials Science and Applications
Jozef Zmija, Editor(s)

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