Antiferroelectric Compounds with trifluoromethyl group in ω-Position of Terminal Chain

Abstract

Chiral (S) 4-(1-methylheptyloxycarbonyl)phenyl 4′-(ω-trifluoroethoxyalcoxy)biphenyl-4-carboxylates and 4′-(ω-trifluoro-butanoyloxyalcoxybiphenyl)carboxylates were prepared and their phase transitions and the temperature dependence of the smectic layer spacings, tilt angle, spontaneous polarization, threshold and switching times for the antiferroelecrtic—ferroelectric transition were measured.

Key Words:

• antiferroelectrics
• phase transitions
• smectic layer spacings
• spontaneous polarization
• tilt angle
• switching parameters