title: Reversible oxygen addition on a triplet sensitizer molecule: protection from excited state depopulation.
abstract: We demonstrate that photoactivated oxygen addition to diphenylanthracene moities can be used as a tool for protection of porphyrin's phosphorescence against oxygen quenching. Phosphorescent palladium(II) tetrabenzoporphyrin, covalently linked to four diphenylanthracene moieties, was synthesized and studied. Upon irradiation with ambient light or red laser in solution in air, addition of oxygen and formation of the corresponding endoperoxides were observed. Heating of the irradiated samples afforded the parent porphyrin material.
authors: Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany. filatov@mpip-mainz.mpg.de.
authors: Mikhail A
authors: MA
authors: Filatov
authors: Ernesta
authors: E
authors: Heinrich
authors: Dmitry
authors: D
authors: Busko
authors: Iliyana Z
authors: IZ
authors: Ilieva
authors: Katharina
authors: K
authors: Landfester
authors: Stanislav
authors: S
authors: Baluschev
mesh_terms: D000873:Anthracenes / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000873:Anthracenes; D010100:Oxygen