Singlet oxygen generation by photoactive polymeric microparticles with enhanced aqueous compatibility

Fabregat, Víctor; Burguete, M Isabel; Galindo, Francisco; Luis, S. V.

Singlet oxygen generation by photoactive polymeric microparticles with enhanced aqueous compatibility

2014

Fabregat, Víctor | Burguete, M Isabel | Galindo, Francisco | Luis, S. V. (Santíago V.)

Two new photoactive materials compatible with environmentally friendly solvents (water and methanol) have been synthesized and characterized. They are comprised of a porous matrix of polystyrene and divinylbenzene with bound Rose Bengal and additional pendant groups added to increase the hydrophilicity (ethylenediamine and γ-gluconolactone). The new polymers are efficient photocatalysts capable of generating singlet oxygen after irradiation with visible light. Photochemical oxygenations of 9,10-anthracenedipropionic acid and 2-furoic acid have been carried out. The measured conversions indicate that the new supported photosensitizers are more effective than the parent hydrophobic polymer.

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