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Provisional Recommendations

Macromolecular Division
Commission on Macromolecular Nomenclature

Definitions of Basic Terms Relating to Low-Molar-Mass and Polymer Liquid Crystals

This document is the first published by the Commission on Macromolecular Nomenclature of IUPAC dealing specifically with liquid crystals. Due to the breadth of its scope, it has been prepared in collaboration with representatives of the International Liquid Crystal Society. The document gives definitions of terms related to low-molar-mass and polymer liquid crystals. It relies on basic definitions of terms which are widely used in the field of liquid crystals and in polymer science. The terms are arranged in five sections dealing with basic definitions of liquid-crystalline and mesomorphic states of matter, types of mesophases, optical textures and defects of liquid crystals, their physical characteristics (including electro-optical and magneto-optical properties), and, finally, liquid crystal polymers. The terms which have been selected are those most commonly encountered in the conventional structural and associated thermal and electro-optical characterization of liquid-crystalline materials.

Comments by 31 December 1999
To Prof. Maximo Baron
Catedra de Fisica
Facultad de Ciencias Exactas y Naturales, Universidad de Belgrano, Villanueva 1324, 1426 Buenos Aires, Argentina.

Tel.: +54-11-4511-4700
Fax: +54-11-4821-4887
E-mail: baron@ub.edu.ar

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Page last modified 24 June 1999.
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