Polypyrrole complexed with cobalt–phthalocyanine. A conducting polymer which is stable to air and moisture

Polypyrrole–sulphonated cobalt–phthalocyalocyanine films form electrodes which are stable on repeated recycling between –1.0 and 1.2 V in MeCN–Et4NBF4, and lose only 35% of the cobalt–phthalocyanine in aqueous electrolytes; the conductivity of the films increases on storing in air, in contrast to films containing BF4– counterions which show decrease in conductivity.