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Mesomorphic Behaviour of Optically Active Anils: 4-n-Alkoxybenzylidene-4′-Methylalkylanilines

  • Y. Y. Hsu
  • D. Dolphin

Abstract

The effect of bulky substituents, at the ortho position of a benzene ring, the α-position of a central linkage, as well as at a terminal alkyl chain, upon mesomorphic properties has recently been studied in several classes of liquid crystals.1–8 The results have shown that in most cases both the solid-mesomorphic and the mesomorphic-isotropic transition temperatures were lowered markedly as compared with the unsubstituted parent compounds. More recently three members of both the active and racemic forms of the 4-alkoxy-benzylidene-4′-β-methylbutylaniline series (I)9 have been prepared to investigate their optical properties. It was found that both the melting and clearing points were about 10–20° lower than that for the corresponding unsubstituted benzylideneanilines.

Keywords

Smectic2 Phase Transition Entropy Racemic Form Mosaic Texture Nematic Isotropic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • Y. Y. Hsu
    • 1
  • D. Dolphin
    • 1
  1. 1.Department of ChemistryHarvard UniversityCambridgeUSA

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