General Description 5,10,15,20-Tetrakis(pentafluorophenyl)-21 H ,23 H -porphine palladium(II) is a phosphorescent dye that is a derivative of palladium(II). It can be used as a singlet oxygen sensitizer due to the presence of fluorine atoms. It provides photostability and is resistant to oxidation. Application It can be used as a porphyrin dye with a high quantum yield for use in the fabrication of oxygen sensors.