The research progresses in the synthesis

structure

properties and applications of conducting polyaniline (PAn) in Changchun Institute of Applied Chemistry

Chinese Academy of Sciences are outlined．Starting with the successful synthesis of soluble PAn

some basic chemical and structural issues on PAn were elucidated A structural model of doped PAn and a doping mechanism of PAn were pmposed．In addition to the protonic doping of PAn

iodine oxidative doping

light-assisted oxidative doping and K+ -implantation reductive doping of PAn were found and reported．Two PAn-based anti-corrosion coatings with polyurethane and epoxy resin as carriers were exploited．By means of the principle of dopant-induced solubility

phosphonic acids with long poly (ethylene glycol) tails were synthesized as the water soluble dopants for PAn

and with the usage of these dopants

the processability of PAn in aqueous systems was realized．The manufacturing technologies of PAn and its anti-corrosion coatings have passed the pilot trials and are being industrialized．