Synthesis, characterization and study of liquid crystal properties of new homologous chalcone series

GRAPHICAL ABSTRACT

ABSTRACT

One new mesogenic homologous series of chalconyl derivative with two ring (3/-(4/- (decyloxy) phenyl-1-(4-(alkoxy) phenyl) prop-2-en-1-one) has been synthesized and characterized by a combination of elemental analysis and standard spectroscopic methods. In the series, the lower members (C₄ and C₅) exhibit only enantiotropic nematic mesophase but middle and higher members exhibit enantiotropic nematic as well as smectic mesophase. The nematic mesophase commence from C₄ homologue and smectic mesophase (smectic-A type texture) commence from C₆ homologue as enantiotropic and persists up to the last member synthesized. The mesomorphic properties of present series were compared with other two structurally similar series to study the effects of change of meta and para position on the mesomorphism.

KEYWORDS:

• Enantiotropic
• liquid crystal
• mesomorphism
• nematic
• smectic

Acknowledgments

The authors thank Dr. R. R. Shah, Principal of K. K. Shah Jarodwala Maninagar Science College, Ahmedabad. The authors also thank the NFDD Centre for the analytical and spectral services.