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Effect of Molecular Structure on Mesomorphism. 6. Non-Linear Thermal Behavior in Some Binary Liquid Crystal Systems

  • Anselm C. Griffin
  • Thomas R. Britt
  • Neal W. Buckley
  • Richard F. Fisher
  • Stephen J. Havens
  • D. Wayne Goodman
Chapter

Abstract

Most binary mesophase systems exhibit mesophase-isotropic transition temperatures which are linearly dependent on composition. There are however exceptions. Demus (1) reported non-linear behavior for some mixtures when one component was a chloro mesogen. Dave (2) found similar behavior with chloro and nitro liquid crystals and postulated a structural rationale based on dipolar characteristics of the constituent molecules. Schroeder and Schroeder (3) reported in 1968 that non-mesomorphic nitro-terminated anils enhanced (4) the smectic phase of di-n-hexyloxyazoxybenzene. These authors suggested a loose dimeric association of the nitro anils as part of a molecular explanation for this enhanced smectic phase.

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Copyright information

© Springer Science+Business Media New York 1978

Authors and Affiliations

  • Anselm C. Griffin
    • 1
  • Thomas R. Britt
    • 1
  • Neal W. Buckley
    • 1
  • Richard F. Fisher
    • 1
  • Stephen J. Havens
    • 1
  • D. Wayne Goodman
    • 2
  1. 1.Department of ChemistryUniversity of Southern MississippiHattiesburgUSA
  2. 2.National Bureau of StandardsGaithersburgUSA

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