Synthesis and Luminescence of 3-(pyridine-2-yl)-1,2,4-triazine-based Ir(III) Complexes

Abstract

A series of novel iridium(III) complexes containing 5-N-(aryl)-amino- or 5-cycloamino-3-(pyridine-2-yl)-1,2,4-triazine ligands was obtained. These complexes exhibited red luminescence in solution as well as in the solid state. Based on the DFT studies it was suggested that N(2) atom of the 1,2,4-triazine core is preferable to N(4) one as the coordination site in the complexes of Ir(III).