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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 9
BKCSDE 27(9)
September 20, 2006 

Synthesis and Mesomorphic Properties of New Swallow-tailed Liquid Crystals Derived from 1,3-Dialkoxy-2-propanols
Kyung-Tae Kang*, Seng Kue Lee, Chang Won Park, Sang Hui Cho, Jong Gun Lee, Soon-Kyu Choi, Yong Bae Kim
Liquid crystal, Swallow-tailed liquid crystal, Antiferroelectric-like phase, Fluorinated alcohols, 1,3-Dialkoxy-2-propanols
New liquid-crystalline biphenyl carboxylates with an achiral swallow-tail derived from 1,3-dialkoxy-2-propanol [(ROCH2)2CHOH] where R is methyl, ethyl, propyl, butyl, CH2CF3, and CH2CF2CF3 were prepared. These achiral liquid crystals having 1,3-dialkoxy-2-propyl moieties exhibit diverse phase sequences [I-SmA-(SmC)-(SmCalt)-Cr] depending on the substituent R group of the swallow-tail. The compounds carrying a fluorinated swallow-tail exhibit antiferroelectric-like smectic C phases, and their temperature ranges are broader than the corresponding non-fluorinated swallow-tailed ones.
1364 - 1370
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