Syntheses and Physical Properties of Ferrocene Derivatives (III) Liquid Crystallinity of Disubstituted Ferrocene Derivatives

Abstract

A new series of 1,1′-disubstituted ferrocene derivatives, 1,1′-bis[4-[ω-(4′-methoxyphenoxycarbonyl)phenoxy]-alkoxycarbonyl]ferrocene, incorporating a variable carbon number of methylene chain units has been prepared. The thermal behavior of these compounds has been examined by polarizing microscopy observations and differential scanning calorimetry measurements. Four of five kinds of samples synthesized here showed liquid crystallinity near the ambient temperature. Furthermore, these compounds have a fairly wide temperature range of liquid crystalline states.

Key Words:

• Ferrocene
• liquid crystal
• 1,1′-disubstituted derivatives
• transition metal complex
• phase transition