Influence of alkyl chain length and fluorine atoms substitution on infrared spectra of chiral liquid crystalline esters

Abstract

The infrared spectra were registered for series of three-ring liquid crystalline esters, differing in the structure of alkyl chain, in the substitution of benzene ring by fluorine atoms and in the type of helicoidal structure in the chiral smectic CA phase with antiferroelectric properties. The influence of molecular structure on the shift of signals coming from carbonyl group, located in the rigid core, was observed. Keywords: liquid crystals, helicoidal structure, chiral smectic CA phase, antiferroelectric crystalline phase, infrared spectroscopy

Keywords

• liquid crystals
• helicoidal structure
• chiral smectic CA phase
• antiferroelectric crystalline phase
• infrared spectroscopy