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Ionically bound metalloporphyrin pairs on solid polymer support

Publication Type : Journal Article

Publisher : Journal of Porphyrins and Phthalocyanines

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

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Keywords : 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

Campus : Amritapuri

School : School of Arts and Sciences

Department : Chemistry

Year : 2001

Abstract : 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 amp; Sons, Ltd.

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

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