Electrical conductivity of doped polyacrylonitrile (PAN). [Halogen doped polyacrylonitrile]

Conference · Fri Jan 01 00:00:00 EST 1982

OSTI ID:6306256

Teoh, H; MacInnes, D; Metz, P D

The electrical conductivity and optical absorption spectra of halogen doped PAN have been investigated. When films of PAN previously heated in vacuum to 280/sup 0/C are exposed to bromine or iodine vapor the conductivity rises suddenly. The conductivity is reduced by pumping off the vapor, but upon subsequent reheating the conductivity increases dramatically, with a transition occurring at about 270/sup 0/C. Undoped samples were previously reported to undergo a similar transition above 390/sup 0/C. All samples obey sigma ..cap alpha.. T/sup -1/4/ behavior, suggesting 3-dimensional variable range hopping as the conduction mechanism. The optical and infrared absorption spectra of doped PAN are compared to those previously reported for the undoped material. The stability of doped PAN in air is also discussed. 7 figures.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6306256
• Report Number(s): BNL-32651; CONF-821229-2; ON: DE83012076
• Resource Relation: Conference: Colliquium on physics and chemistry of synthetic and organic metals, Les Arcs, France, 14 Dec 1982
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ORGANIC POLYMERS
ELECTRIC CONDUCTIVITY
ABSORPTION SPECTRA
BROMINE
DOPED MATERIALS
EXPERIMENTAL DATA
HIGH TEMPERATURE
INFRARED SPECTRA
IODINE
NITRILES
TEMPERATURE DEPENDENCE
DATA
ELECTRICAL PROPERTIES
ELEMENTS
HALOGENS
INFORMATION
MATERIALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERS
SPECTRA
360404* - Materials- Polymers & Plastics- Physical Properties- (-1987)