Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.346, 9-18, 2000
Polar liquid crystals formed from polar rigid-rod polyester based on hydroxy benzoic acid and hydroxy naphthoic acid
We describe a distinct nematic liquid crystal with ferroelectric ordering which is formed from the polar rod-like aromatic polyester. The nematic liquid crystal is biaxial and the polarity appears along both axes as determined by measurements of the second harmonic generation. The strong dipole-dipole interaction between polar rod-like molecules may be ascribed to the origin of the polarity.
Keywords:polyester;nematic liquid crystal;polar ordering;second harmonic generation;rigid-rod polymer