Azomesogens with methoxyethyl tail: Synthesis and characterization |
| |
Authors: | A K Prajapati and H M Pandya |
| |
Institution: | (1) Applied Chemistry Department, Faculty of Technology and Engineering, MS University of Baroda, Kalabhavan, P B No. 51, 390 001 Vadodara, India |
| |
Abstract: | Two new mesogenic homologous series are synthesized from methoxyethyl 4-(4′-hydroxyphenylazo) benzoate. In series I the phenolic
-OH group is alkylated, whereas in series II it is esterified with 4-n-alkoxybenzoyl group. In series I, all the nine members
synthesized exhibit only enantiotropic smectic A mesophase. In series II, all the twelve homologues exhibit enantiotropic
nematic mesophase. Smectic A mesophase appears from then-decyloxy derivative as a enantiotropic phase and persists till the last n-hexadecyloxy member. The mesomorphic properties
of both the series are compared with each other and also with the properties of other structurally related series to evaluate
the effect of the methoxyethyl tail on mesomorphism. |
| |
Keywords: | Azomesogens methoxyethyl tail smectic A nematic |
本文献已被 SpringerLink 等数据库收录! |
|