53764-61-7Relevant academic research and scientific papers
Phase Transition Studies in N(p-n-Heptyloxy Benzylidene)p-Toluidine, 70.1, Across I-N, N-SA and SA-SB Phases
Rao, N. V. S.,Prasad, P. V. Datta,Pisipati, V. G. K. M.
, p. 175 - 186 (2007/10/02)
The results of density and ultrasonic velocity variation with temperature in N(p-n-heptyloxy benzylidene)p-toluidine, HYBT, 70.1 exhibiting nematic, smectic-A and crystalline smectic-B phases, are presented.The isotropic-nematic, nematic-smectic-A phase transitions are found to be first order while the smectic-A crystal smectic-B transition is weak first order.The thermal expansion coefficient α computed from the molar volume data is presented.The molar sound velocity and molar compressibility of HYBT computed from the density and ultrasonic velocity data in isotropic phase are compared with the values of the other compounds in a homologous series.They are found to be in good agreement with theory.
RECHERCHES SUR LES SUBSTANCES MESOGENES-VIII; PREPARATION ET PROPERTIES MESOMORPHES DE SERIES ISOMETRIQUES
Malthete, Jacques,Canceill, Josette,Gabard, Jacqueline,Jacques, Jean
, p. 2815 - 2821 (2007/10/02)
The synthesis and the mesomorphic properties of various series of isometric mesogenic compounds are described.It is confirmed that isometric mesogenic molecules may be nematogenic and/or smectogenic according to the position of the polar rigid core.
