Transport and EPR studies of polyaniline: A quasi-one-dimensional conductor with three-dimensional ‘‘metallic’’ states

Observation of crossover from three- to two-dimensional variable-range hopping in template-synthesized polypyrrole and polyaniline

“…In both films the hopping distance is larger than the layer thickness (see Table I) so that the above condition is fulfilled. This arguments are analoguous to the ones used to explain the conductivity in polyaniline by Wang et al 16 . He concluded that despite the fact that there are metallic bundles in polyaniline, it is a quasi 1 a D conductor.…”

Thermal characterization of doped polyaniline and its composites with CoPc

“…15 The conduction phenomena in samples protonated with emeraldine base can be explained on the basis of granular polaron model. 16 However, for highly doped polyaniline, as in the present case, the density of charge carriers is approximately equal to the density of protonated charge sites. In such cases, the increase in conductivity (diffusivity) occurs due to three factors; the increased "metallic" content of the sample, a reduction in tunneling/hopping distance between the metallic regions, and the increased charge-carrier density.…”

Electrically detected and conventional magnetic resonance investigation of surface and bulk states in polyaniline thin films

“…On the other hand, the Pauli-type contribution comes from delocalized spins, which do contribute to the current. 19 That could explain why no EDMR signal is observed below 250 K for these polyaniline samples.…”