NEW SOLUBLE POLYANILINE - SYNTHESIS, ELECTRICAL-PROPERTIES AND SOLUTION ELECTRONIC-SPECTRUM

The reaction of aniline with copper(II) perchlorate in acetonitrile yields highly-electroconductive polyaniline perchlorate, [(-C6H4NH-)(ClO4)m&middotnH2O]x, which is soluble in dimethylsulfoxide (DMSO) and has low degrees of branching and/or crosslinking. The conductivity of a material with m = 0.43 is 3.1 S cm-1 at room temperature. The solution electronic spectrum of the perchlorate exhibits a strong band at 285 nm and a weak band at 445 nm; no band is observed in the region of 830 nm. In the solution electronic spectrum of the corresponding polymer base, strong bands are observed at 630 and 325 nm.