Poly(4-anilino-1-butanesulfonic acid) sodium Salt was synthesized from
the electrochemical oxidation of 4-anilino-1-butanesulfonic acid sodi
um salt, which was readily obtained from aniline and 1,4-butane sulton
e. The resulting water-soluble polymer has shown much higher redox cyc
lability than unsubstituted polyaniline, which was demonstrated by an
in situ spectroelectrochemical and a cyclic voltammetric study.