Premium
Liquid crystalline phase transition studies in N(p‐n‐butoxybenzylidene) p‐n decylaniline, 40.10
Author(s) -
Rao N. V. S.,
Potukuchi D. M.,
RaoA P. Bhaskara,
Pisipati V. G. K. M.
Publication year - 1989
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170240217
Subject(s) - liquid crystal , compressibility , phase transition , isotropy , adiabatic process , liquid crystalline , phase (matter) , materials science , thermodynamics , order (exchange) , condensed matter physics , crystallography , chemistry , optics , organic chemistry , physics , finance , economics
The synthesis, characterization and the temperature dependence of density and ultrasonic velocity of N(p‐n‐Butoxybenzylidene) p‐n‐decylaniline, 40.10 are presented. The compound exhibits as trivariant liquid crystalline mesomorphism Viz., NAB the Isotropic – Nematic, and Smectic A – Smectic B phase transitions are found to be first order. However, the interesting Nematic Smectic A (NA) transition shows a second order nature. The NA transition results are discussed in the light of the available data on other nO.m compounds. The computed molecular parameters: adiabatic compressibility (β ad ) molar sound velocity ( R n ) and molar compressibility ( A w ) are presented.