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Updated: Apr 17, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Reversible oxygen addition on a triplet sensitizer molecule: protection from excited state depopulation
Mikhail A Filatov1, Ernesta Heinrich, Dmitry Busko
1Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany. filatov@mpip-mainz.mpg.de.
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.
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