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Citation: Mu Shaolin. CONDUCTIVITY, ELECTRON SPIN RESONANCE AND SUSCEPTIBILITY OF POLYANILINE[J]. Acta Physico-Chimica Sinica, ;1988, 4(01): 14-19. doi: 10.3866/PKU.WHXB19880104 shu

CONDUCTIVITY, ELECTRON SPIN RESONANCE AND SUSCEPTIBILITY OF POLYANILINE

Mu Shaolin

1.
Department of Chemistry; Yangzhou Teacher's College

Received Date: 5 August 1986
Available Online: 15 February 1988

The changes in the conductivity and electron spin resonance intensity of polyaniline before and after reduction with temperature have been reported. The energy band gap E_g of polyaniline after reduction is 0.252 eV which was obtained from the plot of logσ vs.1/T, its unpaired electron density is approximately 1.84×10~(23)m~(-3) or 1.06×10~(20)kg~(-1), its conductivity-temperature relation is given by σ_t= σ_(20)-9.17×10~(-4) (20-t) S.m~(-1). The conductivity of polyaniline before reduction decreases with rising temperature above 20 ℃ and increases with rising temperature below 20 ℃. Its unpaired electron density is approximately 2.55×10~(27)m~(-3) or 1.47×10~(24)kg~(-1). The density and peak-peak linewidth ΔH_(p-p) of the electron spin resonance of both forms of polyaniline change with temperature. Each of susceptibility of polyaniline before reduction is zero at the different temperatures.
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