Liquid-crystalline zinc and nickel 1,4,8,11,15,18,22,25-octaalkylphthalocyaninates: beneficial effect of the zinc ion on mesophase stabilities

Abstract

Zinc 1,4,8,11,15,18,22,25-octaalkylphthalocyaninates exhibit discotic mesophase behaviour over a much wider temperature range than their nickel analogues. In the former series a mesophase is exhibited by compounds bearing substituents as short as pentyl groups.