engleski

Polymer-dimer distribution in the electrochemical synthesis of polyaniline

The distribution of major products associated with the process of polyaniline (PANI) synthesis is discussed. On the basis of the results obtained in the cyclic voltammetry and constant potential synthesis the dependence of that distribution upon monomer concetration, switching potential, potential of synthesis are discussed, the corresponding reaction scheme is given and terms for the reaction rates derived. The conditions governing the polymer-dimer distribution are formulated. The origin of the middle peak, appearing during PANI synthesis, is discussed in the light of the specific experimental conditions, and species corresponding to it are identified. The reaction scheme for the hydrolisis pathway of dimer is confirmed.

polyaniline ; 4-aminodiphenylamine ; electrooxidation ; electropolymerization

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