Interaction of polyaniline with hydroxyl-ions in N-methylpyrrolidinone

► Two-stages interaction of emeraldine base of polyaniline with tetraalkylammonium and potassium hydroxides in N-methylpyrrolidinone solutions and cast films. ► The spectral features typical of the increased intramolecular conductivity in PANI backbone. ► Chemical transformation and degradation of the polymer backbone.