Abstract
Poly(N-dodecylaniline), poly(N-dodecylaniline-co-aniline) and poly(N-octanoylaniline-co-aniline) were prepared from reduced polyaniline using the elimination reaction of hydrogen halide of 1-bromododecane or octanoyl chloride. They are soluble in several organic solvents. Solvatochromic shifts of spectra of their solutions have been observed and analyzed in terms of various solvent parameters. The linear relationships between the energy of absorption maxima and donor number of solvents or Taft's β parameters have been found. Color changes of solutions are explained by the changes in solute-solvent interactions.