Electropolymerization of copper tetraaminophthalocyanine in dimethyl sulfoxide (DMSO) is studied, along with redox conversions of this polymer inDMSO and propylene carbonate (PC). At cathodic potentials, redox conversions of the polymer are similar to those of the monomer. At anodic potentials, the polymer exhibits some redox activity in PC and almost none, inDMSO. The redox conversions are attributed to the formation of a common system of conjugated bonds.