An experimental study of the frequency dependence of the conductivity of emeraldine polymer as a function of moisture content and protonation level is presented. A decrease in the conductivity and dielectric constant are observed to occur with pumping. The detailed frequency and composition behavior of these data are inconsistent with the proposed proton exchange assisted conduction of electrons (PEACE). The experimental results are shown to be consistent with the role of charging energy limited tunneling among small granular polymeric metal particles formed upon protonation of emeraldine.
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Javadi et al. (1988) studied this question.
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