Heat capacities of cubic mesogen ANBC-22 with two different cubic phases

Abstract

Heat capacities of cubic mesogen ANBC-22 were measured with an adiabatic calorimeter in the 14-485 K range, and with a DSC in the 193-483 K range. Phase transitions were observed between the adjacent phases in the phase sequence, Crl-Cr2-SmC-Cub I -Cub II-I. The enthalpy (170 J mol^<-1>) and entropy (0.37 J K^<-1> mol^<-1>) gained at the Cub I -Cub II phase transition at 453.8 K were extremely small.