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The com pound N(p-n-decyloxy benzylidene)p-n-tetradecyl aniline, (100.14), a higher hom ologue of the M BBA series, exhibits smectic F and smectic G phases. Dilatom etric studies inferred strong pre-transitional effects in a large temperature range. D SC results confirmed the first order nature of the IF and FG transitions. The exponential growth of continuous six fold hexagonal order across the isotropic-smectic F phase transition is estim ated from the density studies with an exponent b = 0.75.

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