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Orientational Order Parameters of Nematogenic Trans – 4-Propyl ‎ Cyclohexyl-4 (Trans – 40alkyl Cyclohexyl) Benzoates‎

Wed, 2014-02-26 09:40 — Dr. Muneer Mustafa Mahd Abdoh
Journal Title, Volume, Page: 
Pramana, Volume 19, Issue 4, pp 349-355
Year of Publication: 
1982
Link: 
http://link.springer.com/article/10.1007/BF02847775
Authors: 
M M M Abdoh
Department of Physics, University of Mysore, 570 006, Mysore, India
Current Affiliation: 
Department of Physics, Faculty of Science, An-Najah National University, Nablus, Palestine
[email protected]
Srinivasa
Department of Physics, University of Mysore, 570 006, Mysore, India
Current Affiliation: 
Department of Physics, University of Mysore, 570 006, Mysore, India
N C Shivaprakash
Department of Physics, University of Mysore, 570 006, Mysore, India
J Shashi-Dhara Prasad
Department of Physics, University of Mysore, 570 006, Mysore, India
Preferred Abstract (Original): 

The refractive indices and densities of three members of trans-4-propyl cyclohexyl-4 (trans-4-alkyl cyclohexyl) benzoates are reported as functions of temperature in the nematic and isotropic phases. The principal molecular polarizabilities and order parameters (S) have been evaluated using the anisotropic internal field model (Neugebauer’s approach). Also order parameters have been estimated by studying the dipole-dipole splittings in the wide line proton magnetic resonance (PMR) spectra. The results obtained are in close agreement with those obtained from refractive index measurements.

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