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- W2077854190 abstract "The results of the temperature dependence of dc conductivity, microwave dielectric constant, X-ray diffraction, EPR, and NMR experiments are reported for chemically synthesized polypyrrole films soluble in organic solvents. The temperature dependence of dc conductivity of these systems follows the three-dimensional variable range hopping model. The slope of the temperature dependence of dc conductivity varies with dopants and solvents used. Room temperature dc conductivities are in the range of ∼0.2−0.01 S/cm, and the localization lengths are estimated as ≤10 Å, which indicates a relatively strong localization of charge. The results of microwave dielectric constant experiments support the strong localization behavior. The X-ray diffraction studies show that soluble polypyrroles are amorphous. From electron paramagnetic resonance experiments, the density of states of polypyrrole doped with naphthalenesulfonic acid in m-cresol solvent is estimated as ∼0.107 states/(eV ring). We obtain the result that the system achieves a more highly conducting state as the polarity of the solvent used increases." @default.
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- W2077854190 date "1998-01-01" @default.
- W2077854190 modified "2023-10-16" @default.
- W2077854190 title "Charge Transport and Spin Dynamics of Chemically Synthesized Polypyrrole Soluble in Organic Solvents" @default.
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- W2077854190 doi "https://doi.org/10.1021/ma970508v" @default.
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