Structure and phase transitions in smectic A liquid crystals with polar and sterical asymmetry
- 1 January 1993
- journal article
- invited lecture
- Published by Taylor & Francis in Liquid Crystals
- Vol. 14 (1) , 131-157
- https://doi.org/10.1080/02678299308027308
Abstract
We review recent experimental studies of smectic A layering of asymmetric mesogens with emphasis on their relationship to phase transition physics. The formation of one and two dimensional lattices with long range order in the positions of the heads (tails) of molecules is considered as having either a polar or a steric origin. The various molecular models and phenomenological descriptions reproducing the phase behaviour of particular types of layering are evaluated. The influence of molecular factors on the delicate stability of different smectic A(C) phases is discussed in detail.Keywords
This publication has 77 references indexed in Scilit:
- Filled smectic A phases in binary liquid-crystalline systems of terminal-nonpolar compounds. V. Smectic A phases with unusually high ratio of the layer spacing and the average molecular lengthLiquid Crystals, 1990
- Combined main chain/side chain polymers. A new class of liquid crystalline polymers with unusual structural, thermodynamic and dynamic propertiesLiquid Crystals, 1990
- Plenary Lecture. One hundred years of liquid-crystal chemistry: Thermotropic liquid crystals with conventional and unconventional molecular structureLiquid Crystals, 1989
- Steric effects of substituents in mesogens and phase transition temperatures in uniaxial liquid crystalsLiquid Crystals, 1987
- Molecular organization in side chain liquid crystalline polymersJournal de Physique, 1985
- The chemistry of liquid crystalsPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1983
- Polymorphisme des substances mésogènes a molécules polaires. I. Physico-chimie et structureJournal de Chimie Physique et de Physico-Chimie Biologique, 1983
- A new thermotropic smectic phase made of ribbonsJournal de Physique Lettres, 1982
- A new type of smectic A phase with long range modulation in the layersJournal de Physique, 1981
- ANOMALOUS TRANSITIONAL BEHAVIOUR IN MIXTURES OF LIQUID CRYSTALS : A NEW TRANSITION OF SA-SA TYPE ?Le Journal de Physique Colloques, 1979