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http://dx.doi.org/10.5012/bkcs.2007.28.11.1939

Synthesis and Mesomorphic Properties of New Achiral Liquid Crystals with 3-Alkoxy-2-(alkoxymethyl)-1-propoxy Swallow-Tails  

Kang, Kyung-Tae (Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University)
Kim, Jeong-Tak (Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University)
Hwang, Ryeo-Yun (Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University)
Park, Song-Ju (Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University)
Lee, Seng-Kue (Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University)
Lee, Jong-Gun (Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University)
Kim, Yong-Bae (Liquid Crystal Research Center and Department of Chemistry, Konkuk University)
Publication Information
Bulletin of the Korean Chemical Society / v.28, no.11, 2007 , pp. 1939-1944 More about this Journal
Abstract
New liquid crystalline (biphenylcarbonyloxy)benzoates with an achiral swallow-tail derived from 3-alkoxy-2- (alkoxymethyl)-1-propanol [(ROCH2)2CHCH2OH, R = Me, Et, Pr, Bu] were prepared. These liquid crystals exhibited the phase sequence (I-SmA-SmCalt-(SmCX)-Cr) and showed antiferroelectric-like Smectic C phase (SmCalt) at temperature lower, and temperature range broader than do the compounds containing a branched alkyl group as a swallow-tail. The temperature ranges of antiferroelectric phase were found to be 30-90 oC and crystallization temperatures were 4-60 oC. The binary mixture of an achiral swallow-tailed liquid crystal and a chiral antiferroelectric liquid crystal, (S)-MHPOBC showed antiferroelectric smectic C phase at temperature much lower than the single chiral antiferroelectric liquid crystal does.
Keywords
Liquid crystal; Swallow-tailed liquid crystal; Antiferroelectric-like phase; 3-Alkoxy-2-(alkoxymethyl)-1-propanol;
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