On the photo- and electro-induced polymerization of M(tetrakis(x-aminophenyl)porphyrin), where x = 2, 3 or 4 and M = Zn(II) or Ni(II)

Reactions of photochemically or radiolytically generated radicals with tetrakis(x -aminophenyl)porphyrin, tapp2−, initiate the polymerization of the porphyrin complexes Mtapp, where M = Ni or Zn. In the photochemical process, the porphyrin-centered excited state of Mtapp reacts with the ground state to generate oxidized and reduced radical species. The cationic radical, M(tappradical dot+), appears to be the initiator of the porphyrin polymerization. An electron transfer reaction between the excited state of Mtapp and a Co(III) complex generates also the cation radical and initiates the polymerization process. Pulse radiolytically generated View the MathML sourceCl2- and OHradical dot radicals were also able to initiate the polymerization of the porphyrin complexes