PREPARATION AND REACTIVITY OF METAL-CONTAINING MONOMERS .46. COPOLYMERIZATION OF VINYLPORPHYRIN METAL-COMPLEXES AND THE STRUCTURE OF THE PRODUCTS

The radical-induced copolymerization of meso-tetraphenylporphyrin mono mers with the vinyl group in a benzene or pyrrole ring and their coppe r and zinc complexes with styrene and methyl methacrylate was studied. Porphyrin comonomers decrease the overall polymerization rate and the number-average molecular weight of the products formed compared to th e weight of polystyrene obtained under similar conditions. The main re asons for termination of chain growth by vinylporphyrins were revealed , and some quantitative parameters of these reactions were obtained. I R and electronic absorption spectra of porphyrin-containing copolymers are discussed. According to the ESR spectra, the copper-containing ce nters in the copolymers are fairly remote from each other, and the met al-containing polymeric systems are magnetically dilute.