| Abstract: | New homologous series containing a thienyl-enaminoketone-phenyl (TEP) core substituted by a halogen atom have been synthesized. It is shown that the stability of the orthogonal phases decreases with the decreasing electron-accepting properties of the halogen atom. Generally the materials studied form orthogonal smectic phases, but in additional, tilted smectic phases are observed in iodine-substituted series as well as for two homologues containing bromine in the thienyl ring. For comparison, a homologous series containing a terminal cyano group was also studied. |
