Influence of Fluorinated Substituents on the Near-Infrared Phosphorescence of 5d Metallocorroles

The influence of fluorinated substituents on the luminescentpropertiesof rhenium-oxo, osmium-nitrido, and gold triarylcorroles was studiedvia a comparison of four ligands: triphenylcorrole (TPC), tris(p-trifluoromethylphenyl)corrole (TpCF(3)PC), tris{3,5-bis(trifluoromethyl)phenyl}corrole (T3,5-CF3PC), and tris(pentafluorophenyl)corrole (TPFPC). For eachmetal series examined, fluorinated substituents were found to enhancethe luminescent properties, with the phosphorescence quantum yieldsand triplet decay times increasing in the order TPC < TpCF(3)PC < T3,5-CF3PC < TPFPC.Among the 11 complexes examined, the highest phosphorescence quantumyield, 2.2%, was recorded for Re[TPFPC](O).