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International Letters of Chemistry, Physics and Astronomy
Volume 58
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Synthesis of Liquid Crystals with Substituents in Terminal Benzene Cores and their Mesomorphic Behaviour

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Abstract:

A new homologous series consisting of thirteen homologues central ester and chalcone linkage with Pentyloxy side chain at terminal benzene ring is synthesized and their mesomorphic properties are studied, with the exception of the methyl, ethyl and propyl homologues. However, the rest of homologues show mesomorphism enantiotropically manner with exhibition of nematic phase. The texture image of the nematic mesophases is observed by optical polarizing microscope equipped with heating stage (POM) is threaded or Schlieren type. An odd-even effect is observed in the nematic-isotropic curve with alternation in transition temperatures. The mesomorphic properties of the novel series are compared with other structurally similar homologous series. Analytical and spectral data confirm the molecular structure of the compounds.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 58)
Pages:
144-153
Citation:
V. S. Sharma and R.B. Patel, "Synthesis of Liquid Crystals with Substituents in Terminal Benzene Cores and their Mesomorphic Behaviour", International Letters of Chemistry, Physics and Astronomy, Vol. 58, pp. 144-153, 2015
Online since:
September 2015
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References:

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Cited By:

[1] V. Sharma, R. Patel, "Dependence of mesomorphism on molecular rigidity of chalconyl liquid crystals with two phenyl rings", Molecular Crystals and Liquid Crystals, Vol. 637, p. 19, 2016

DOI: https://doi.org/10.1080/15421406.2016.1190502

[2] V. Sharma, R. Patel, "Effect of alkyl chain in the terminal ester group on mesomorphic properties of new rod like homologous series: Synthesis and characterization", Molecular Crystals and Liquid Crystals, Vol. 643, p. 62, 2017

DOI: https://doi.org/10.1080/15421406.2016.1262690

[3] V. Sharma, R. Vekariya, A. Sharma, R. Patel, "Mesomorphic properties of liquid crystalline compounds with chalconyl central linkage in two phenyl rings", Liquid Crystals Today, Vol. 26, p. 46, 2017

DOI: https://doi.org/10.1080/1358314X.2017.1359401