89709-66-0Relevant articles and documents
Liquid Crystalline Properties of Cholesteryl ω-Arylalkanoates
Koden, Mitsuhiro,Miyake, Shiro,Takenaka, Shunsuke,Kusabayashi, Shigekazu
, p. 2387 - 2390 (2007/10/02)
The thermal properties of the homologous series of cholesteryl ω-(4-benzoylphenyl)- (I), ω-(4-benzylphenyl)- (II), ω-benzoyl- (III), and ω-phenoxyalkanoate (IV) have been investigated.For series I and II the cholesteric-isotropic (Ch-I) transition temperatures, enthalpies, and entropies show a remarkable alternation.For series III and IV, the transition temperatures, enthalpies, and entropies exhibit weak alternation and their trends are opposite to those for series I and II, and the cholesteryl ω-phenylalkanoates.The cholesteric-isotropic transition temperatures are discussed in terms of the geometrical and electrical alternations stemming from the terminal aryl groups, and also the relative importance between these two terms.