Monohydroxy- and tetrahydroxyporphyrins have been anchored on crosslinked polystyrene matrices through ether linkage. Ortho, meta and para substituted polymeric porphyrins have been synthesised from chloromethyl polystyrene and suitably substituted porphyrins and the products characterised by spectral studies. The interesting features of the electronic spectra of polymer anchored porphyrins like split soret bands are explained by the orientational variation in ortho-, meta- and para-isomers and the effect of polymer-porphyrin interaction on the electronic levels of porphyrin macrocycle. The copper complexes of these polymer-bound porphyrins are synthesised and analysed spectroscopically. Electronic and ESR spectra show interesting results and these are explained based on the electronic modification of porphyrin systems on a rigid macromolecular backbone.
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T. Mathew, Prof. M. Padmanabhan, and S. Kuriakose, “Studies on polymer-appended free base porphyrins with ether linkage and their copper complexes”, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, vol. 39, pp. 414-418, 2000.