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Synthesis and Liquid Crystal Properties of Chiral Compounds Containing the Core Structure of 6‐Hydroxynicotinic Acid or 4‐Hydroxyphenylacetic Acid
Author(s) -
Tsai WenLiang,
Huang KuangYu,
Hsueh ChingYi,
Wang KuanTung,
Wen ChiChang,
Lai HsinMei,
Cheng PaoSwu
Publication year - 2006
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200600183
Subject(s) - moiety , chemistry , liquid crystal , phase (matter) , molecule , carboxylic acid , hydroxybenzoic acid , stereochemistry , core (optical fiber) , organic chemistry , physics , optics , materials science , composite material
The carboxylic acid 4‐hydroxybenzoic acid, bonded directly with ( R )‐2‐octanol, is the core molecule of chiral liquid crystal ( R )‐MHPOBC. This acid was substituted either by 6‐hydroxynicotinic or by 4‐hydroxyphenylacetic acid. Such a structural variation induced a remarkable influence on the liquid crystal properties of ( R )‐MHPOBC. The series of compounds 1 ˜ 4 containing 6‐hydroxynicotinic acid moiety tend to exhibit a chiral smectic C (SmC*) phase, while the series of compounds 5 ˜ 8 containing 4‐hydroxyphenylacetic acid moiety tend to possess a chiral nematic (N*) phase.