Abstract
New liquid crystalline compounds containing phosphorus were synthesized. Phosphorus derivatives having terminal group with an alkoxy moiety or an ethylene oxide mojety in terminal show schlieren texture. The phosphorus derivative possessing an asymmetric carbon atom in terminal group shows oily streak texture. By X-ray diffraction measurement of the compounds possessing an alkoxy moiety or an ethylene oxide moiety, one sharp peak and one broad peak were detected at the mesomorphic temperature in the small angle and wide angle regions, respectively. Therefore, mesophase of the compounds possessing alkoxy moiety or ethylene oxide moiety were assigned to a smectic C phase, while the compound possessing an asymmetric carbon atom in terminal was attributed to a cholesteric phase.
