Syntheses and Physical Properties of Ferrocene Derivatives (I) Liquid Crystallinity of Ferrocene Derivatives Containing Cholesteryl Group

Abstract

Abstract Nine kinds of ferrocene derivatives, [4-[ω-(cholesteryloxy carbonyl)alkoxy carbonyl]phenyl] ferrocene, were synthesized. Polarizing microscopy observations and differential scanning calorimetry measurements of these compounds were made in a wide temperature range. The liquid crystallinity was observed in the derivatives containing 2,4,6, 10, and 11 carbon atoms in the flexible alkyl chain of the compounds. An appearance of the liquid crystallinity was discussed with a conformation of the flexible alkyl chain which exerted a great influence on the molecular shape.