Chirality of magnetoelectropolymerized polyaniline electrodes

Polyaniline film electrodes were prepared by a magnetoelectropolymerization (MEP; electropolymerization under magnetic fields) method, and their chiral electrode properties were examined for L- and D-ascorbic acids by cyclic voltammetry. The MEP film electrodes showed different oxidation currents between enantiomers, and those prepared under reverse magnetic fields showed opposite chirality. These results indicate that the MEP method introduces chirality to the polyaniline films and such film electrodes possess the ability of enantioselective recognition for ascorbic acid.