Synthesis, crystal structure and photoluminescence of iridium (III) coumarin complexes

Two novel iridium organometallic compounds, Ir(III)bis(3-(pyridin-2-yl)coumarinato N,C4)(thenoyltrifluoroacetonate) and Ir(III) bis(3-(pyridin-2-yl)coumarinato N,C4)(acetylacetonate) [Ir(L)2(TTA) and Ir(L)2(acac)], were synthesized and characterized by elemental analysis, 1H NMR, FT-IR and UV–vis absorption spectra. X-ray crystallography demonstrated that Ir atom is six coordinated in Ir(III)bis(3-(pyridin-2-yl)coumarinato N,C4)(thenoyltrifluoroacetonate). Both the iridium organometallic compounds emit intense green emissions, indicating that they are useful for the fabrication of organic light-emitting diodes.