Visible-Light Harvesting PtII Complexes as Singlet Oxygen Photosensitizers for Photooxidation of 1,5-Dihydroxynaphthalene



Cyclometalated PtII complexes that show strong visible-light absorption and long-lived triplet excited states were used as efficient singlet oxygen (1O2) sensitizers for the photooxidation of 1,5-dihydroxynaphthalene (DHN). The photooxidation velocity of the cyclometalated PtII complex is 4.4 times that of the conventional IrIII complex triplet photosensitizers that do not show strong absorption of visible light.