Supported photosensitizers for the visible light activation of phenols towards oxygen

To circumvent the drawbacks of the homogeneous photosensitization, a series of photosensitizing molecules, mainly porphyrins and phthalocyanines, were supported on aminopropyl silica and/or exchange resins. Their grafting ratios were evaluated and their efficiencies were assayed on the ability to ph...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2005-03, Vol.170 (2), p.143-149
Main Authors: Pepe, Emilie, Abbas, Ouissam, Rebufa, Catherine, Simon, Maryse, Lacombe, Sylvie, Julliard, Michel
Format: Article
Language:English
Subjects:
Chemical Sciences
Material chemistry
Organic chemistry
Phenol photo-oxidation
Phthalocyanines
Porphyrins
Supported photosensitizers
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Summary:To circumvent the drawbacks of the homogeneous photosensitization, a series of photosensitizing molecules, mainly porphyrins and phthalocyanines, were supported on aminopropyl silica and/or exchange resins. Their grafting ratios were evaluated and their efficiencies were assayed on the ability to photo-oxidize phenol under 900 W/m 2 visible light. A comparison was done by determining the time necessary to obtain 50% consumption of the substrate. Under these conditions, the meso tetra(4-sulfonatophenyl)porphine displayed the best photocatalytic effect.
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2004.06.019