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

► Ir(III) 2-(4,6-difluorophenyl)pyridyl complexes with amidate ancillary ligand. ► Tuning emission color by simply altering the structure of amidate ligand. ► Amidate ligands affect the energy level of emitting excited states. ► Amidate ligands affect inter-ligand energy transfer.