Electrical and magnetic properties of liquid crystalline molecular materials: Lithium and lutetium phthalocyanine derivatives
Journal Article
·
· Journal of Physical Chemistry; (USA)
- UCB, Villeurbanne (France)
- ESPCI, Paris (France)
- Institut Charles Sadron, Strasborg (France)
The synthesis and characterization of bis(phthalocyaninato)lutetium (Pc{sub 2}Lu) and lithium phthalocyanine (PcLi) substituted with long alkyl chains are reported. They form columnar liquid crystals over an extended domain of temperature. Oxidation of the lutetium derivative to the corresponding ionic compound (s-Pc{sub 2}Lu){sup +}, BF{sub 4}{sup {minus}} leads to a more stable mesophase. The magnetic properties of (s-Pc){sub 2}Lu are determined by electron paramagnetic resonance (EPR) spectra demonstrating the influence of the disorder on the EPR line width. Electrical properties of the solid and liquid crystalline phases have been measured in the frequency range 10{sup {minus}3}-10{sup 5} Hz. The intracolumnar order is shown to determine the frequency dependence of the conductivity: {omega}{sup 0.8} for the disordered columnar liquid crystalline phase and {omega}{sup 0.5} for the corresponding ordered one.
- OSTI ID:
- 7197584
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:24; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Tue Nov 20 23:00:00 EST 1990
· Journal of the American Chemical Society; (United States)
·
OSTI ID:5170931
Synthesis, structure, and spectroscopic and magnetic properties of lutetium(III) phthalocyanine derivatives: LuPc/sub 2/ x CH/sub 2/Cl/sub 2/ and (LuPc(OAc)(H/sub 2/O)/sup 2/) H/sub 2/O x 2CH/sub 3/OH
Journal Article
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· Inorg. Chem.; (United States)
·
OSTI ID:6149632
Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400000 -- Chemistry
400400 -- Electrochemistry
ALKALI METAL COMPOUNDS
CRYSTALS
DATA
DATA ANALYSIS
DYES
EXPERIMENTAL DATA
FLUIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
LIQUID CRYSTALS
LIQUIDS
LITHIUM COMPOUNDS
MATERIALS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEASURING METHODS
MOLECULAR MODELS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SEMICONDUCTORS
PHTHALOCYANINES
SEMICONDUCTOR MATERIALS
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400000 -- Chemistry
400400 -- Electrochemistry
ALKALI METAL COMPOUNDS
CRYSTALS
DATA
DATA ANALYSIS
DYES
EXPERIMENTAL DATA
FLUIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
LIQUID CRYSTALS
LIQUIDS
LITHIUM COMPOUNDS
MATERIALS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEASURING METHODS
MOLECULAR MODELS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SEMICONDUCTORS
PHTHALOCYANINES
SEMICONDUCTOR MATERIALS