Abstract
Calorimetric data on the mesogenic homologous series H 9C 4OC 6H 4NCHC 6H 4OC n H 2 n + 1 are presented. Trends in the nematic-isotropic liquid transition temperatures, enthalpies and entropies are briefly discussed. A remarkable polymorphism is evidenced in several compounds. The importance of the thermal history of the samples in relation to their thermal behavior is shown.
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