Influence of the Nature of Monomer on Electropolymerization Processes and Physical and Chemical Properties of Films Based on Hydroxy-Substituted Tetraphenylporphyrins

摘要

The ability of oxidative polymerization of tetraphenylporphyrin derivatives from ethanol solution was studied: 5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin, 5,10,15,20-tetrakis(3-hydroxyphenyl)porphyrin, Zn-5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin, Zn-5,10,15,20-tetrakis(3-hydroxyphenyl)porphyrin. The polymerization of 5,10,15,20-tetrakis(3-hydroxyphenyl)porphyrin does not occur; three of the four studied porphyrins form thin transparent polyporphyrin films tightly adhered to the electrode surface. The influence of the nature of the monomer, the deposition mode, and the supporting electrolyte used on the process of electropolymerization and the properties of the deposited polyporphyrin films were studied. The spectral changes observed during film deposition indicate that the generation of the polyporphyrin films occurs through the formation of C–O–C bonds and the preservation of the porphyrin macroheterocycle in polyporphyrin.