2025 vol 4 issue 2
Full paper
Rupesh Rane 1, Vandit Pandya 2 *, Dhruv Darji 2, Rakesh R. Giri 3, Anushree Ujjankar 1
1 Department of Physical & Chemical Sciences, Sigma University, Vadodara, India
2 Chemistry Department, M. P. Pandya Science College, Lunawada, India
3 Chemistry Department, Sheth P. T. Arts & Science College, Godhra, India
* Correspondence to: vanditpandya6@gmail.com
pp. 169-180
DOI: 10.58332/scirad2025v4i2a05
Abstract
A new homologous series 4-(4’-n-alkoxy cinnamoyloxy) Azo 4”-bromo-3”-methyl benzene was synthesized with a view to understand and establish the relation between mesogenic properties and structure of molecules. Ethyl to hexadecyl all twelve homologues are enantiotropically nematogenic. None of the homologues exhibited a smectogenic mesophase. No odd–even effect was observed in the transition curve. The average thermal stability was observed to be 127.9°C and the nematogenic mesophase ranged from 8.0°C to 16.0°C. Thus, the series was found to be of a low ordered melting type with moderate nematogenic range. Analytical data confirmed the structure of the compounds, and the mesomorphism was identified by optical microscopy. The mesogenic properties were compared with structurally similar compounds.
Keywords
liquid crystal, smectogenic phase, nematic phase, mesophase
First published: 16.06.2025
