Spin and spinless conductivity in polypyrrole. Evidence for mixed-valence conduction
Journal Article
·
· Chemistry of Materials; (United States)
- Ist. di Polarografia ed Elettrochimica Preparativa, Padova (Italy)
In situ conductivity of polypyrrole (as tosylate) as a function of oxidative doping level attains a maximum at three-quarters the total oxidation charge and the relevant in situ ESR signal corresponds to an equal concentration of spin-carrying (polaron) and spinless (bipolaron) species. Results are explained on the basis of mixed-valence conduction. Bipolaron conduction, taking the place of polaron-bipolaron conductivity at higher oxidation levels, accounts for persisting conductivity in the high-oxidation state.
- OSTI ID:
- 5203333
- Journal Information:
- Chemistry of Materials; (United States), Journal Name: Chemistry of Materials; (United States) Vol. 3:1; ISSN CMATE; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
AZOLES
CHARGE CARRIERS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
MAGNETIC RESONANCE
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PYRROLES
RESONANCE
VALENCE
360603* -- Materials-- Properties
AZOLES
CHARGE CARRIERS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
MAGNETIC RESONANCE
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PYRROLES
RESONANCE
VALENCE