Transport properties of FeCl₃-doped polypyrroles at different dopant concentrations

Abstract

The electrical mnductivities of FeUl-doped polypyrrole samples with different dopant concentrations have been measured in the tempenture range 25-300 K. Thermoelectric power mea+urements have been performed on two polypyrmle samples at low doping levels between 50 and 300 K. The variation in DC conductivity can be explained by Monk vasiablerange hopping (VRH) model. Fitting with MOD'S YRH theory. the conductivity data provide the values of the density N(€F) of states at the Fermi level and the hopping distance R. The low value and the sublinear character of the themoelechic power is consistent with the VRH theory.

Single Polypyrrole Nanowire Ammonia Gas Sensor

“…This is in good agreement with previously reported value for chemically synthesized polypyrrole [26].…”

Chemically polymerized polypyrrole for on-chip concentration of volatile breath metabolites

“…Finally, an additional method to achieve conducting films is with the introduction of a dopant. A dopant will not only increase the conductivity of polypyrrole [36, 38], but it may also increase the concentration and separation of anionic [5, 48], cationic [9, 48, 49] and neutral analytes [50, 51]. …”

Comparison study of graphene based conductive nanocomposites using poly(methyl methacrylate) and polypyrrole as matrix materials

“…Depending of additives, the electrical conductivity of doped PPy has been changed. When ZrO 2 was added the DC conductivity of PPy has been reduced [28] whereas Y 2 O 3 was added the DC conductivity of PPy has been increased [29]. This phenomenon has been explained as due to the interaction of doping materials at the grain boundary of PPy material.…”