Abstract: Microwave-assisted synthesis of a novel cyclometalated iridium(III) quinoxaline complex with the formula Ir(DPQ)3(DPQ=2,3-diphenylquinoxaline) via the reaction of 2,3-diphenylquinoxaline and iridium trichloride hydrate. The complex was characterized by elemental analysis, 1H NMR and mass spectroscopy. The complex shows strong 1MLCT (singlet metal to ligand charge-transfer) and 3MLCT (triplet metal to ligand charge-transfer) absorption at 387 and 458nm, respectively. The complex also shows strong photoluminescence at 634nm at room temperature. These results suggest the complex to be a promising phosphorescent material.

Key words: phosphorescent material, iridium quinoxaline complex, triplet, microwave-assisted synthesis