Dielectric anisotropy of discotic liquid crystal

Journal Article · Thu Sep 20 04:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100382a002· OSTI ID:6333559

Belarbi, Z ^[1]

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1. Universite Claude Bernard-Lyon, Villeurbanne (France)

The author reports here for the first time an important temperature-dependent positive dielectric anisotropy of a columnar mesophase constituted of disklike molecules ((C{sub 12}O){sub 8}Pc){sub 2}Lu oriented with a magnetic field. The measured anisotropies are as high as 4.5 and approximately 10 for the dielectric constant and conductivity, respectively. The origin of the high dielectric anisotropy may be understood by considering an intracolumnar charge carrier transport which results in an important induced dipolar moment along the columnar axis.

• OSTI ID: 6333559
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:19; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ANISOTROPY
CHARGE CARRIERS
CRYSTALS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
FLUIDS
LIQUID CRYSTALS
LIQUIDS
LUTETIUM COMPOUNDS
MAGNETIC FIELDS
MATERIALS
ORGANIC SEMICONDUCTORS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SEMICONDUCTOR MATERIALS