Aromatic Fluorination Effect on the Mesomorphic Properties of Discotic Liquid Crystal of Alkoxybenzoyloxytriphenylene

Abstract Two homologues, C6F4 and C10F4 having 2,3,5,6-tetrafluorophenylene moieties were synthesized and investigated on the mesomorphic behavior. It was revealed that these exhibit a hexagonal columnar (Colh) phase, and this mesomorphism is quite different from the corresponding nonfluorinated homologues, C6H4 and C10H4 predominantly showing a discotic nematic (ND) phase.