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Thermal Microscopy and DSC Studies of 4‐[4‐n‐pentyloxybenzylideneamino] Azobenzene
Author(s) -
Rao K. R. K.,
Rao J. V.,
Venkatacharyulu P.,
Rao S. V. Chiranjeevi,
Ballah V.
Publication year - 1986
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.2170211219
Subject(s) - differential scanning calorimetry , azobenzene , liquid crystal , optical microscope , phase transition , microscopy , crystallography , materials science , polarized light microscopy , phase (matter) , chemistry , molecule , organic chemistry , optics , scanning electron microscope , thermodynamics , physics , composite material , optoelectronics
Phase transition studies of the liquid crystal, 4‐[4‐n‐pentyloxybenzylidene–amino]–azobenzene (PBAAB) have been investigated by thermal microscopy and Differential Scanning Calorimetry (DSC) studies. From these studies it is confirmed that the compound, PBAAB exhibits nematic, smectic A and smectic B phases. The textures exhibited by different phases are presented. The enthalpies and entropies at various phase transitions are also reported.