Publication Type:

Journal Article


Journal of Porphyrins and Phthalocyanines, Volume 5, Number 11, p.763-766 (2001)



aqueous solution, Cobalt, copper, covalent bond, electron spin resonance, Manganese, metalloporphyrin, methyl iodide, polymer, polymerization, polystyrene, review, Silver, solid state, stoichiometry, tetrakis(4 pyridyl)porphyrin, unclassified drug, zinc


The present work demonstrates a simple and elegant strategy by which synthetically simple porphyrins are grafted on solid polymer support to generate porphyrin pairs held together by strong coulombic forces. Metalloporphyrins of tetra(4-pyridyl)porphyrins (MTPyP) were reacted with chloromethylated polystyrene (PS) beads to get covalently bound monocationic porphyrins on the polymer support (PS-MTPyP+). These were then converted to their tetracationic species (PS-MTMe3PyP4+) by exhaustive quaternisation, using CH3I. These polymer-grafted cationic porphyrins were made to react with tetraanionic p-sulphonated phenylporphyrins (MTPPS4-) in aqueous conditions. Analysis showed that the PS-MTMe3PyP4+ take up MTPPS4- in exactly 1:1 stoichiometry to form strongly bound (ionically) porphyrin pairs. A variety of homo- and hetero-porphyrin pairs involving central metal ions like Mn, Co, Cu, Zn and Ag and also free-base porphyrins are generated by this strategy. Copyright © 2001 John Wiley & Sons, Ltd.


cited By 9

Cite this Research Publication

M.V. Vinodu and Prof. M. Padmanabhan, “Ionically bound metalloporphyrin pairs on solid polymer support”, Journal of Porphyrins and Phthalocyanines, vol. 5, pp. 763-766, 2001.