S. Ujiie, K. Iimura
Jun 1, 1992
Citations
1
Influential Citations
155
Citations
Quality indicators
Journal
Macromolecules
Abstract
The iodide (I/CA) and poly(vinylsulfonate) (PA/CA) of bis(2-hydroxyethyl)ethyl(6-(4-(4-nitrophenyl)azo)phenyl)oxy)hexyl)ammonium were prepared, and their liquid-crystalline behavior was compared. I/CA and PA/CA exhibited enantiotropically smectic A phases. The ionic groups play an important role in forming the smectic layer structure and enhance the thermal stability of the smectic state. I/CA and PA/CA exhibit an oriented overgrowth on a glass plate by an orientational adsorption of ammonium ion groups. The homeotropic structures form spontaneously in the smectic phase of I/CA and PA/CA and remain unchanged on cooling in the solid phase