A new composite electrode PtPc-poly-bisphenol-A-carbonate of reticulate structure is characterized by two anodic and four cathodic redox transitions in propylene carbonate electrolytes. Investigation of the anodic part of the CV at the slow scan rate 0.02 mV s(-1) displays very narrow peaks 25-50 mV at half height with a large constant potential difference (pd) similar to 0.4-0.5 V between anodic and relevant cathodic maxima. The oxidation at relatively high scan rates results in a new peak, which is interpreted as the dispersion of PtPc in the polymer matrix. The incorporation of carbon into the composite significantly improves the performance of electrode, but does not influence pd. Electrochemical oxidation in TBAPF(6) at 0.5 V leads to the transformation from the monoclinic to the tetragonal crystal lattice, the growth of electronic conductivity to similar to 0.1-1 S.cm(-1), positive thermopower similar to 10 mu V.K-1, a new absorption band at 553 nm and a uniaxial ESR signal at helium temperatures.