Miscibility study of three types of polar smectic A1

Abstract

The properties are described of the smectic A1 phase occurring in two homologous series with the terminal group NCS: nDBT and nTPCHB. The results of miscibility studies of the smectic phases of these compounds with the smectic A1 and Ad phases of cyanocompounds nOBCAB are described. It has been shown that the properties of the smectic phases of compounds nDBT and nTPCHB are different, so these phases are treated as two different subtypes of smectic A1 phase.