Electrochemical synthesis and properties of polyporphyrin films based on 5,10,15,20-tetra(4-pyridyl)porphyrin

Polyporphyrin films were obtained by electrooxidative polymerization of 5,10,15,20-tetra(4-pyridyl)porphyrin which, in turn, was obtained by condensation of pyrrole with pyridine-4-carboxaldehyde. The polymer formation involved the side substituents, with the π-conjugated porphyrin platform being preserved. The obtained polyporphyrin forms an electroconductive coating possessing semiconductor properties with the band gap of 1.76 eV