Synthesis, characterization and photophysical properties of two heteroleptic 2-(4,6-difluorophenyl)pyridyl iridium(III) complexes with amidate ancillary ligands

Two novel iridium(III) complexes containing 2-(4,6-difluorophenyl)pyridyl cyclometalating ligand and amidate ancillary ligands were synthesized and characterized by NMR and X-ray crystallographic methods. Photophysical properties including UV–vis absorption and photoluminescence spectra were studied, indicating that the electronic properties of the amidate ancillary ligand exhibit a significant effect on the emitting excited states of these iridium(III) amidate complexes and thus lead to different emission colors.