DIELECTRIC-CONSTANT AND AC CONDUCTIVITY IN POLYANILINE DERIVATIVES

Citation
Nj. Pinto et al., DIELECTRIC-CONSTANT AND AC CONDUCTIVITY IN POLYANILINE DERIVATIVES, Solid state communications, 97(12), 1996, pp. 1029-1031
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
00381098
Volume
97
Issue
12
Year of publication
1996
Pages
1029 - 1031
Database
ISI
SICI code
0038-1098(1996)97:12<1029:DAACIP>2.0.ZU;2-Z
Abstract
We report our results on ac conductivity and dielectric constant measu rements at 10 kHz on polyaniline and derivatives of polyaniline having alkyl ring-substituents. A comparison with de conductivity is made to gain further insight into the conduction mechanism. The room temperat ure de and ac conductivities are similar; however, deviations at lower temperatures characteristic of conduction mechanisms typical of varia ble range hopping are observed. This deviation is larger for samples h aving greater disorder. Disorder also suppresses the temperature depen dence of the dielectric constant.