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Issue 10, 1996
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Ferroelectric and antiferroelectric liquid crystalline phases in some pyridine carboxylic acid derivatives

Abstract

The synthesis and mesomorphic properties of two series of compounds viz.(S)-(+)-4-(1-methylheptyloxy)phenyl 4′-(6″-alkoxypyridine-3-carbonyloxy)benzoates and (S)-(+)-l-methylheptyl4-[4′-(6″-alkoxypyridine-3-carbonyloxy)benzoyloxy]-benzoates are reported; the homologues of the former series exhibit smectic A and smectic C* phases while the derivatives of the latter series show rich polymesomorphism including the antiferroelectric phase. The mesophases have been characterised by using optical polarising microscopy and differential scanning calorimetric methods. Some physical properties such as the spontaneous polarisation, helical pitch, tilt angle and relative permittivity of two derivatives have also been investigated.

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Article type: Paper
DOI: 10.1039/JM9960601619
Citation: J. Mater. Chem., 1996,6, 1619-1625
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    Ferroelectric and antiferroelectric liquid crystalline phases in some pyridine carboxylic acid derivatives

    N. Kasthuraiah, B. K. Sadashiva, S. Krishnaprasad and G. G. Nair, J. Mater. Chem., 1996, 6, 1619
    DOI: 10.1039/JM9960601619

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