Novel synthetic methods of PANI functionalizalion are described. We investi
gated coupling of diazonium salt and electrophilic nitration of the aromati
c ring, amine group protection by amide formation, nucleophilic reaction wi
th activated aromatic moieties and nucleophilic addition of. sulfite ions t
o the ring. The structure of the products and their properties were studied
by FTIR, UV-vis spectroscopy and electrochemistry.