Ferroelectric liquid Crystallinity of Unsymmetrically Disubstituted Pyrazines with Chiral Substituents

Ferroelectric liquid Crystallinity of Unsymmetrically Disubstituted Pyrazines with Chiral Substituents

Ferroelectric liquid crystallinity of unsymmetrically substituted arylpyrazines and diarylpyrazines with chiral substituents were investigated. The arylpyrazines with (S)-4-methylhexyloxyl group in the pyrazine ring showed chiral smectic C phase (Sc* phase) at the low temperature. The diarylpyrazine...

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Veröffentlicht in:Nippon Kagakukai shi (1972) 1992-10, Vol.1992 (10), p.1213
Hauptverfasser: MATSUMOTO, Masaru, SANO, Youichi, NAGAISH, Toshiyuki, YOSINAGA, Syunichi, Isomura, Kazuaki, TANIGUCHI, Hiroshi
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container_issue 10
container_start_page 1213
container_title Nippon Kagakukai shi (1972)
container_volume 1992
creator MATSUMOTO, Masaru
SANO, Youichi
NAGAISH, Toshiyuki
YOSINAGA, Syunichi
Isomura, Kazuaki
TANIGUCHI, Hiroshi
description Ferroelectric liquid crystallinity of unsymmetrically substituted arylpyrazines and diarylpyrazines with chiral substituents were investigated. The arylpyrazines with (S)-4-methylhexyloxyl group in the pyrazine ring showed chiral smectic C phase (Sc* phase) at the low temperature. The diarylpyrazines were revealed to f orm thermally stable Sc* phase over wider ranges of temperatures. Several compounds were revealed to have excellent ferroelectric liquid crystlline properties. Particularly, thermal stability of Sc* phase for compounds having long chain alkoxyl groups and (S)-2-methylbutoxycarbonyl group was increased. The properties of ferroelectric liquid crystalline phases for a ser ies of the compounds were measured. The tilt angle were about 22.5° and the spontaneous polarization was largest at the dodecyloxy group and the response touelectric field was faster than the other compounds. t Synthesisa nd FerroelectricL iquid Crystal of UnsymmetricallyD isubstituted Pyrazine sw ith Chiral Substituents
doi_str_mv 10.1246/nikkashi.1992.1213
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title Ferroelectric liquid Crystallinity of Unsymmetrically Disubstituted Pyrazines with Chiral Substituents
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