Ferroelectric liquid crystalline phase transition of (S)-hexakis(4-(4′-(6-methyl)octyloxy)biphenoxy) cyclotriphosphazene

Keiichi Moriya Department of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu, 501-11, Japan

Shigekazu Nakagawa Department of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu, 501-11, Japan

Shinichi Yano Department of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu, 501-11, Japan

Meisetsu Kajiwara Department of Applied Chemistry, School of Engineering, Nagoya University, Chikusa-ku, Furo-cho, Nagoya, 464-01, Japan

Abstract

(S)-Hexakis(4-(4′-(6-methyl)octyloxy)biphenoxy)cyclotriphosphazene (SMOCP) was synthesized in a search for new ferroelectric liquid crystalline compounds. We found an enantiotropic ferroelectric smectic C∗ phase between 419 and 441 K in SMOCP by using polarizing microscopy and DSC measurements. The spontaneous polarization was estimated to be -130.5 μCm⁻² at 437.6 K, several times larger than that of DOBAMBC ((S)-2-methylbutyl 4-(4′-decyloxybenzylidene)aminocinnamate.

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Ferroelectric liquid crystalline phase transition of (S)-hexakis(4-(4′-(6-methyl)octyloxy)biphenoxy) cyclotriphosphazene

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Ferroelectric liquid crystalline phase transition of (S)-hexakis(4-(4′-(6-methyl)octyloxy)biphenoxy) cyclotriphosphazene

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