Syntheses and reactions of porphyrin and metalloporphyrin polymers

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Abstract
Various porphyrin functions such as protoporphyrin IX and chlorin a as well as metalloporphyrin functions such as Mg(II)– and Cu(II)–chlorophyllin a and Fe(III)– and Co(II)–protoporphyrin IX were incorporated into vinyl polymers by preparation and polymerization of their p‐vinylbenzyl esters. The porphyrin function was also incorporated by reaction of poly‐p‐chloromethylstyrene with porphyrins or metalloporphyrins or by the reaction of p‐aminostyrene polymers with chlorophyll b through Schiff‐base formation. Mg(II)–porphyrin polymers were found to be remarkably effective as catalysts in photoredox systems; porphyrin polymers without central metal atoms were also effective to a lesser extent.

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