Electron paramagnetic resonance investigations of electrospun polyaniline fibers

A comparative study of the EPR magnetic susceptibility behavior of the camphorsulfonic acid-doped polyaniline (PANCSA) blends with polyethylene oxide (PEO) is reported. Compared to films, the fibers are found to exhibit increased Pauli susceptibility, more Lorentzian character in the EPR lineshape,...

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Veröffentlicht in:	Solid state communications 2002-10, Vol.124 (5), p.195-197
Hauptverfasser:	Kahol, P.K, Pinto, N.J
Format:	Artikel
Sprache:	eng
Schlagworte:	A. Polymers Condensed matter: electronic structure, electrical, magnetic, and optical properties Conduction electrons Conductivity of specific materials Critical-point effects, specific heats, short-range order D. Electronic transport Electron paramagnetic resonance and relaxation Electronic transport in condensed matter Exact sciences and technology Magnetic properties and materials Magnetic resonances and relaxations in condensed matter, mössbauer effect Magnetically ordered materials: other intrinsic properties Physics Polymers organic compounds (including organic semiconductors) Saturation moments and magnetic susceptibilities Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
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Zusammenfassung:	A comparative study of the EPR magnetic susceptibility behavior of the camphorsulfonic acid-doped polyaniline (PANCSA) blends with polyethylene oxide (PEO) is reported. Compared to films, the fibers are found to exhibit increased Pauli susceptibility, more Lorentzian character in the EPR lineshape, and smaller EPR linewidth. These changes are interpreted as due to increased chain alignment in the fibers compared with the cast films. Electron localization effects in true nanofibers (diameter
ISSN:	0038-1098 1879-2766
DOI:	10.1016/S0038-1098(02)00492-1