Abstract
Abstract A homologous series of 4′-alkoxyphenyl 4″-cyanophenyl, 1,4-cyclohexanedicarboxylates in which the alkoxy group is C1 → C12 has been prepared. Interphase transitions between solid, mesomorphic and isotropic phases were studied by hot stage microscopy. The nonyloxy compound is the first cyclohexane derivative to exhibit the reentrant phenomenon with the sequence K-Scre-Nre-Sc-SA-N-I. A reentrant nematic phase is also observed in the binary mixture of the octyloxy and decyloxy derivatives. A plot of the nematic-isotropic transition temperatures against the number of carbon atoms in the alkoxy chain shows the usual odd-even effect. The behaviour of this new series is compared with that of the corresponding benzenic homologues.
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