Liquid Crystals and Ordered Fluids, 1974 Volume 2

This volume represents a collection of selected papers from a symposium of the Division of Colloid and Surface Chemistry held in Chicago during the national meeting of the American Chemical Society, August, 1973. The response was remarkable to this "By Invitation" symposium on Ordered Fluids and Liquid Crystals. The size alone expresses the growth of the field. The number of contributions assembled here, for example, is approximately twice that at each of the two previous American Chemical Society symposia on this subject. Contributions from eleven countries were presented and this volume contains more than this number of papers from abroad. The increased attention to liquid crystals has brought some interesting trends in the kinds of systems, the experimental methods, and the nature of the lahoratories involved. There has, for example, been an impressive increase in the number of academic studies on liquid crystals. The works herewith published also represent an im­ pressive variety of traditional and novel eXperimental techniques for the study of liquid crystals. These include rheology, infrared spec­ troscopy, dielectrics, ultrasonics, pulsed NMR, the Kerr effect, plus thermal and electrical conductivity.

The Binding of Divalent Ions to the Phosphoglycoprotein Phosvitin.- Liquid Crystalline Behavior of Biologically Important Lipids. Polyunsaturated Cholesterol Esters and Phospholipids.- An E.P.R. Investigation of the Alignment of Two Smectic A Liquid Crystals.- Pretransitional Behavior in the Isotropic Phase of Homologous Compounds Showing Nematic and Smectic C Type Order.- Electric Field Effects in the Nematic and Smectic Phases of p-n-Nonyloxybenzoic Acid.- Stability of Molecular Order in the Smectic A Phase of a Liquid Crystal.- Molecular Diffusion in the Nematic and Smectic C Phase of 4–4?-Di-n-Heptyloxyazoxybenzene (HOAB).- Diffusion in Oriented Lamellar Phases by Pulsed NMR.- Rotational Diffusion in the Nematic Phase: Part I.- Possible Phase Diagrams for Mixtures of ‘Positive’ and ‘Negative’ Nematic Liquid Crystals.- Vibrational Spectra of Liquid Crystals. VIII. Infrared Spectroscopic Measurements of Order in Nematics and Nematic Solutions.- Changes in Thermodynamic and Optical Properties Associated with Mesomorphic Transitions.- Kinetics of Field Alignment and Elastic Relaxation in Twisted Nematic Liquid Crystals.- Studies on the Molecular Arrangement in Liquid Crystals by Polarization of Fluorescence.- Molecular Order and Molecular Theories of Liquid Crystals.- A New Lyotropic Nematic Mesophase.- NMR Studies of the Interaction between Sodium Ions and Anionic Surfactants in Some Amphiphile-Water Systems.- The Dependence of Some Properties of Aqueous Liquid Crystalline Phases on Their Water Content.- Dielectric Relaxation in Lipid Bilayer Membranes.- Numerical Computations for the Flow of Liquid Crystals.- The Investigation of Lipid-Water Systems. Part 5. Infrared Spectra of Mesophases.- Optical Properties of Nematic Poly-?-Benzyl-L-Glutamate.- LiquidCrystal-Isotropic Phase Equilibria in Stiff Chain Polymers.- Nuclear Magnetic Resonance in Polypeptide Liquid Crystals.- Magnetic Relaxation of Poly-?-Benzyl-L-Glutamate Solutions in Deuterochloroform.- Polymerization of P-Methacryloyloxybenzoic Acid and Methacrylic Acid in Mesomorphic N-Alkoxy-Benzoic Acids.- Thermotropic Liquid Crystals. VI. The Preparation and Mesophase Properties of Asymmetrically 4,4?-Disubstituted Phenyl Benzoates.- Effects of Certain Central Groups on the Liquid Crystal Properties of Dicarboxylic Esters.- Relations of Two Continuum Theories of Liquid Crystals.- Structure and Thermal Conductivity of Supercooled MBBA.- The Dielectric Properties of Nematic MBBA in the Presence of Electric and Magnetic Fields.- Bulk Viscosities of MBBA from Ultrasonic Measurements.- Order Parameters and Conformation of Nematic p-Methoxybenzylidene-p-n-Butylaniline (MBBA) by NMR Studies of Some Specifically Deuterated Derivatives.- The Anisotropic Electrical Conductivity of MBBA Containing Alkyl Ammonium Halides.- Continuum Theory of Cholesteric Liquid Crystals.- Chirality in Mixed Nematic and Cholesteric Liquid Crystals.- Cylindrically Symmetric Textures in Mesophases of Cholesteryl Esters.- Induced Rotary Power in Ternary Mixtures of Liquid Crystals.- Conductivity Differences in the Cholesteric Textures.- Electro-Optical Properties of Imperfectly Ordered Planar Cholesteric Layers.- Temperature Dependence and Rheological Behavior of the Shear-Induced Grandjean to Focal Conic Transition in the Cholesteric Mesophase.- Mesomorphic Behaviour of Optically Active Anils: 4-n-Alkoxybenzylidene-4?-Methylalkylanilines.- Comments on the Relaxation Process in the Cholesteric-Nematic Transition.- Effects of Detergents on Isolated Rat Lymphocyte Plasma Membranes.-Heterocyclic Liquid Crystals and Some Air Force Applications of Mesomorphic Compounds.- Catalysis in Micellar and Liquid Crystalline Phases.- Liquid Crystal Dynamics as Studied by EPR and NMR.- Influence of Molecular Structural Changes on the Mesomorphic Behavior of Benzylideneanilines.- Domain Formation in Homogeneous Nematic Liquid Crystals.- Phase Diagram of Mixed Mesomorphic Benzylideneanilines — MBBA/EBBA.- Some Mechanistic Aspects of the Cholesteric Liquid Crystal Induced Circular Dichroism (LCICD) Phenomenon.- Effect of Cholesteryl Alkanoate Structure on the Pitch of the Cholesteric Mesophase.- On the Theories of Optical Reflection from Cholesteric Liquid Crystal Films.- Some Mesomorphic Properties of N-(p-Azidobenzylidene) — Anilines.- Stable, Low Melting Nematogens of Positive Dielectric Anisotropy for Display Devices.- Electric Field Induced Deformation in Nematic Phenyl Benzoates.- Kerr Effect in the Isotropic Phase of p-Azoxyanisole.- Correlation Time of the Proton-Electron Interaction in MBBA with Traces of Nitroxyde Molecules.- Brillouin Scattering in the Isotropic Phase of MBBA.- Periodic Distortions in Cholesteric Liquid Crystal.- Erasure of Textures Stored in Nematic-Cholesteric Mixtures.- Rheological Properties of Thermotropic and Lyotropic Mesophases Formed by Ammonium Laurate.- Liquid Crystals. II. Liquid Crystalline Properties of Transcinnamic Acid Esters.- Effect of Structure on the Stability of Nematic Mesophases.- Quantum Chemical Evaluation of Intermolecular Forces in a Compound Producing Lyotropic Liquid Crystal: Part I.- Quantum Chemical Evaluation of Intermolecular Forces in a Compound Producing Lyotropic Liquid Crystal: Part II. Consequences of Introduction of a Dissimilar Molecule.