An electrochemical study on anion doping-undoping process of polyacetylene by means of FFT impedance measurement.
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概要
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An electrochemical anion doping-undoping process of <I>cis</I>-polyacetylene, (CH)<I><SUB>x</SUB></I>, was investigated in 1 mol dm<SUP>−3</SUP> LiClO<SUB>4</SUB> or LiBF<SUB>4</SUB> in propylene carbonate by the FFT impedance measurement. This could be applied to the system with time-variation because of its high speed measuring duration. The doping-undoping process of the anion was represented by the Randles-type equivalent circuit, considering the corrective term concerned with surface roughness. The impedance behavior of the doping-undoping process was pursued by the variation of resistive component, <I>Rr.</I> The value of <I>Rr</I> was mainly reflected by the dopant concentration at the surface. The variation of <I>Rr</I> indicated that rapid or strong-drive doping produces non-uniformity of dopant distribution in the film and high dopant concentration at the surface.
著者
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Osaka Tetsuya
Department Of Applied Chemistry Faculty Of Science And Engineering Waseda University
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Kitai Takashi
Department of Applied Chemistry, School of Science and Engineering, Waseda University
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