Electrical conduction in polyaniline compressed pellets doped with alkylbenzenesulfonic acids
- 15 December 1992
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 72 (12), 5702-5705
- https://doi.org/10.1063/1.351921
Abstract
Anion dependent processes of the electrical conduction in chemically prepared polyaniline compressed pellets doped with alkylbenzenesulfonate anion of alkyl chain length 1, 8, and 12 have been investigated by the measurement of the temperature dependence of the conductivity. The conductivity of the samples changes with the temperature as T−1/2, which shows the conduction followed a one dimensional variable range hopping process. With the increase of the alkyl chain length of the dopant anion, the conductivity of the heavily doped 50 mol % sample decreases in whole temperature range, but an exponential factor of the variable range hopping remains unchanged. The results concerning the alkyl chain length of the dopant anion have been discussed from the ‘‘quasi‐one dimensional’’ variable range hopping mechanism and demonstrated the decrease of the transverse localization length and the interchain transfer integral of electron.Keywords
This publication has 22 references indexed in Scilit:
- Mechanism of dc conduction in lightly doped polypyrrole filmsJournal of Applied Physics, 1991
- Structural characterisation of polyaniline free standing filmsSynthetic Metals, 1991
- Polyaniline: Allowed oxidation statesSynthetic Metals, 1991
- Study on the electrical conduction mechanism of polypyrrole filmsSynthetic Metals, 1991
- Electron localization in polyaniline derivativesPhysical Review B, 1990
- Synthesis and electrochemistry of alkyl ring-substituted polyanilinesThe Journal of Physical Chemistry, 1989
- Polyaniline: a new concept in conducting polymersSynthetic Metals, 1987
- Role of Solitons in Nearly Metallic PolyacetylenePhysical Review Letters, 1983
- Polypyrrole: An electrochemically synthesized conducting organic polymerSynthetic Metals, 1980
- Identification of a Class of Disordered One-Dimensional ConductorsPhysical Review Letters, 1972