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Abstract
Bicomponent mixtures of 4-cyanobiphenyl-4′-yl 4′-alkylbiphenyl-4-carboxylates (nCBB) and 4-alkoxy-4′-cyanobiphenyls (nOCB) were studied and their phase diagrams obtained by thermomicroscopy. The strong enhancement of a smectic Ad phase in mixtures with the smectic members of the nOCB (n ⩾ 8) series and the induction of a smectic Ad phase in the shape of an island surrounded by a nematic phase in mixtures with the nematic members of the nOCB (n < 8) series were observed. The influence of aliphatic chain length on the observed phenomena is discussed.
