Multifrequency EPR study of charge transport in doped polyaniline

Authors
Krinichnyi, VI Konkin, AL Devasagayam, P Monkman, AP
Citation
Vi. Krinichnyi et al., Multifrequency EPR study of charge transport in doped polyaniline, SYNTH METAL, 119(1-3), 2001, pp. 281-282
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
119
Issue
1-3
Year of publication
2001
Pages
281 - 282
Database
ISI
SICI code
0379-6779(20010315)119:1-3<281:MESOCT>2.0.ZU;2-L
Abstract
Polyaniline highly doped with acrylamido-2-methyl-1-propanesulphonic (PANI- AMPSA) and camphorsulfonic (PANI-CSA) acids have been studied at X- (9.5 GH z) and K- (37.5 GHz) bands EPR. Localized Curie-like and mobile Pauli-like spin charge carriers are stabilized in amorphous and crystalline regions of the samples. AC conductivity contributed from these paramagnetic centers w as determined. It was shown that, in contrast with PANI-AMPSA, PANI-CSA wit h higher both d.c. and a.c. conductivity is a more ordered metal with more rigid and planar polymer chains.