Dynamical and Structural Characteristics of Biaxial Discotic Mesophases by Deuterium NMR

  • Z. Luz
  • D. Goldfarb
  • E. Lifshitz
  • H. Zimmermann
Part of the Progress in Inorganic Biochemistry and Biophysics book series (PIBB, volume 2)


Discotic liquid crystalline mesophases were discovered about eight years ago, almost simultaneously in India (1) and France (2), Since then several hundreds of compounds and at least seven structurally different classes of such mesophases were identified by optical and X-ray techniques (3,4). In recent years we extended these studies using in particular deuterium NMR of labelled mesogens or dissolved probe molecules. These studies provided information on orientational order, conformational equilibria and solute-solvent interaction in the various discotic mesophases. More recently we concentrated our attention on biaxial discotics and in the present contribution we describe results related to their structural and dynamic characteristics. Before describing these results in more detail we briefly review the chemical characteristics and classification of discotic liquid crystals (4).


Nematic Phase Jump Diffusion Discotic Liquid Crystal Mesophases Columnar High Molecular Complexity 
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  1. 1).
    S. Chandrasekhar, B.K. Sadashiva and K.A. Suresh, Pramana 9, 471 (1977).CrossRefGoogle Scholar
  2. 2).
    J. Billard, J.C. Dubois, N.H. Tinh and A. Zarin, Nouv.J.Chim. 2, 535 (1978).Google Scholar
  3. 3).
    J.C. Dubois and J. Billard in “Liquid Crystals and Ordered Fluids”, (A.C. Griffin and J.F. Johnson eds.), Plenum Publishing Corporation, 1984, p.1043.CrossRefGoogle Scholar
  4. 4).
    D. Goldfarb, Z. Luz and H. Zimmermann, Israel J.Chem. 23, 341 (1983)Google Scholar
  5. 4a).
    Z. Luz, D. Goldfarb and H. Zimmermann in “Nuclear Magnetic Resonance of Liquid Crystals” (J.W. Emsley ed), D.Reidel Publishing Co., 1984, p.000.Google Scholar
  6. 5).
    D. Goldfarb, I. Belsky, Z. Luz and H. Zimmermann, J.Chem.Phys. 79, 6203 (1983).CrossRefGoogle Scholar
  7. 6).
    D. Goldfarb, E. Lifshitz, H. Zimmermann and Z. Luz, J.Chem.Phys. 82, 5155 (1985).CrossRefGoogle Scholar
  8. 7).
    The single domain sample was obtained by spinning the container containing the liquid crystal in the nematic phase about an axis perpendicular to the field direction while slowly heating it into the Drd phase (see D.Goldfarb, Z.Luz and H.Zimmermann, J.Physique 42, 1303 (1981)).Google Scholar
  9. 8).
    A.M. Levelut, Proceedings of the International Liquid Crystal Conference, Bangalore (Heyden, London, 1979) p. 21Google Scholar
  10. 8a).
    M. Takabatake and S. Iwayanagi, Jpn.J. Appl.Phys. 21, L685 (1982).CrossRefGoogle Scholar
  11. 9).
    R.Y. Dong, D. Goldfarb, M.E. Moseley, Z. Luz and H. Zimmermann, J.Phys. Chem. 88, 3148 (1984).CrossRefGoogle Scholar

Copyright information

© Birkhäuser Boston, Inc. 1986

Authors and Affiliations

  • Z. Luz
    • 1
  • D. Goldfarb
    • 1
  • E. Lifshitz
    • 1
  • H. Zimmermann
    • 2
  1. 1.The Weizmann Institute of ScienceRehovotIsrael
  2. 2.Max-Planck-Institut fuer medizinische ForschungHeidelbergWest Germany

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