ELECTROPOLYMERIZATION ACID SPECTROELECTROCHEMICAL CHARACTERIZATION OFPOLY(1,5-DIAMINONAPHTHALENE)

1,5-Diaminonaphthalene has been polymerized at glassy carbon and plati num electrodes in 0.1M HCL and acetonitrile solutions by potential cyc ling methods. The polymer film grown on the platinum electrode in an a queous solution had a conductivity of similar to 1 x 10(-5) S/cm. The number of electrons used for the polymerization reaction was found to be about 4 per mole of the monomer from coulometric experiments. The p olymer structure, in which monomers are postulated to be linked to eac h other through 1- and 5- positions of naphthalene, was consistent wit h the infrared spectroscopic data of the polymer and coulometric data for the polymerization reaction. When the polymer film is oxidized in 0.10M HCL, the band at 350 nm undergoes a blue shift to about 290 nm w ith its reduced absorption and a new band shows up at 580 nm with its absorption extending to wavelengths longer than 800 nm.