ELECTROSYNTHESIS AND PROPERTIES OF SELF-DOPED POLYANILINE

Sulfonic acid ring-substituted aniline was polymerized electrochemical ly to obtain self-doped and water soluble polyaniline. The electric co nductivity values of polymers derived from three isomers of aminobenze nesulfonic acid were in the order of 10(-3) Scm(-1) for as prepared sa mples, but increased to 10(-1) similar to 10(-2) Scm(-1) by chemical d oping with Fe(III). The conductivity was unchanged by treating with al kaline solutions. These polymers were easily soluble in water and show ed fairly reversible redox peak around 0.6 V (vs. SCE).