MACROMOLECULAR
DIVISION
COMMISSION ON MACROMOLECULAR NOMENCLATURE
Definitions of basic terms relating to low-molar-mass and polymer
liquid crystals (IUPAC Recommendations 2001)
M. Barón
Facultad de Ciencias Exactas y Naturales, Universidad
de Belgrano, Buenos Aires, Argentina
Abstract: This document is the first published
by the IUPAC Commission on Macromolecular Nomenclature dealing specifically
with liquid crystals. Because of 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 that
are widely used in the field of liquid crystals and in polymer science.
The terms are arranged in five sections dealing with general definitions
of liquid-crystalline and mesomorphic states of matter, types of mesophases,
optical textures and defects of liquid crystals, the physical characteristics
of liquid crystals (including electro-optical and magneto-optical properties),
and finally liquid-crystal polymers. The terms that have been selected
are those most commonly encountered in the conventional structural,
thermal, and electro-optical characterization of liquid-crystalline
materials.
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