A New Liquid Crystalline Substance Exhibiting A Reextrant Nematic Phase and Two Low-Temperature Smectic Phases

Abstract
A few members of the homologous 4-n-alkyloxy-benzylidene-amino-4′-cyanobiphe-nyls were synthesized. The C7-compound exhibits a reentrant nematic phase and at lower temperatures smectic B and smectic E phases.