Azomesogens with 1,2,4-trisubstituted benzene moiety |
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Authors: | R A Vora A K Prajapati |
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Affiliation: | (1) Applied Chemistry Department, Faculty of Technology and Engineering, M.S. University of Baroda, 390 001 Vadodara, India |
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Abstract: | New mesogenic homologous series having an azo central linkage was synthesized by fixing a rigid 4-methyl phenyl azo group
to resorcinol moiety. The terminal and lateral phenolic -OH groups were esterified, one by one, with 4-n-alkoxybenzoyl and acetyl group, respectively. All the twelve homologues synthesized exhibit mesomorphism. The methoxy ton-decyloxy andn-hexadecyloxy derivatives exhibit monotropic nematic mesophase whereas,n-dodecyloxy andn-tetradecyloxy derivatives exhibit enantiotropic nematic mesophase. The mesogenic properties of the present series was compared
with those of other structurally related mesogenic series.
Paper presented at the 5th National Seminar on Liquid Crystals, University of Jammu, Jammu, December 1997. |
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Keywords: | 1 2 4-Trisubstituted benzene lateral acetyloxy group nematic mesophase |
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