Abstract
A homologous series of 4-(4-CnH2n + 1O-phenoxycarbonyl)-phenyl 3-CmH2m + 1 O-4-cyanobenzoates and the bromo derivatives were synthesized (m = 2∼14, n = 2∼8). The LC properties are notably affected by m rather than n. The members with large m preferentially exhibit a smectic C phase. The layer structures of smectic A and C phases and the phase transition behavior were examined by a small angle X-ray diffraction method, and the results are discussed in terms of their molecular structures.
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