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Study of Ethylene Derivatives of Liquid Crystals by New Homologous Series: ├?┬▒-4(-4├ó┬?┬?-n-Alkoxy Cinnamoyloxy) phenyl ├?┬▓-4├ó┬?┬Ł-Nitrobenzoyl Ethylenes. | Abstract

Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

ISSN: 0975-413X

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Abstract

Study of Ethylene Derivatives of Liquid Crystals by New Homologous Series: ├?┬▒-4(-4├ó┬?┬?-n-Alkoxy Cinnamoyloxy) phenyl ├?┬▓-4├ó┬?┬Ł-Nitrobenzoyl Ethylenes.

Author(s): Suthar D. M.,Doshi A. V.

Titled new homologous series of liquid crystal(LC) consists of eleven homologues. Methyl to butyl and dodecyl to hexadecyl derivatives of the series are nonliquid crystals while pentyl to decyl derivatives are polymesomorphic i.e. Smectic and nematic mesophases are displayed one after another in enantiotropic manner. Phase behavior is shown in phase diagram. Texture of the smectic and nematic mesophases are focal conic of smectic-A type and schlieren or threaded type respectively. Analytical data support the molecular structures of homologues. Transition and melting temperatures were determined by hot stage polarising microscope. Average thermal stability for smectic(132.250C)and nematic (171.50C) and other liquid crystal properties of present series:1 are compared with other structurally similar homologous series.


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