Liquid Crystalline Phases in N-(4-n-alkylbenzylidene)-4′-n-alkylanilines
1976 ◽
Vol 31
(7)
◽
pp. 786-792
◽
Keyword(s):
Abstract The mesomorphic behavior of N-(4-n-alkylbenzylidene)-4′-n-alkylanilines is investigated and nematic as well as smectic-B phases are found at comparatively low temperatures. Long aliphatic substituents on the aldehyde side of the molecule favor the smectic-B phase. Observations on smectic-B textures, transition enthalpies and density measurements are reported. The simple method used to determine transition temperatures despite impure samples can also be applied to other compounds, e. g. yielding 21.6 - 47.5 °C for the nematic range of MBBA.