Synthesis, Crystal Structure and Luminescence Properties of a Cyclometalated Ir(III) Complex of 3,4-Diphenylcinnoline

摘要

An iridium(III) complex, [(dpci- H)_)r26 ((ddpcai—fHo =) d]e(IprPotoFna_ted 3,4-diphenylcinoline, dpci; dafo = 4,5-diazafluoren-9-one), was synthesized from the reaction of the iridium complex [Ir(dpci—H)_a(2ndC dafo inl m)eth]ano_l and characterized by single-crystal X-ray difraction along with FT-IR, UV/Vis, ~1H NMR and mass spectroscopy. The luminescence properties and the decay of the cyclometalated iridium(III) complex were also investigated. Excitation at the absorption wavelength (469 nm) resulted in a strong emission band centered at 591 nm with a lifetime of 0.9 is.