| 초록 |
We synthesized a high-conductivity polyaniline by solid/liquid interfacial polymerization. Aniline was polymerized in an organic solvent in the presence of an organic acid and a solid oxidant. The aniline molecules were oxidized and polymerized on the surface of the solid oxidant insoluble in the organic solvent. The new synthetic route provides narrower molecular weight distribution, lower degree of ortho-substitution, and higher degree of crystallinity, which are required to enhance the electrical conductivity. Polyaniline films doped with camphorsulfonic acid exhibited an average conductivity of 576 S/cm (max. 637 S/cm), compared to conventional polyaniline (246 S/cm). We found that polyaniline with lower polydispersity have higher film conductivity. Small portion of low molecular weight polymers reduced significantly the conductivity. The new organic solvent-born, high conductivity polyanilines will expand further the applicability of the polymer. |
