Fig. 3: Rationally designed Ir(III)-dopants.
From: Ancillary ligand increases the efficiency of heteroleptic Ir-based triplet emitters in OLED devices

a Chemical structures of Ir(III) complexes. b DFT-optimized 3MC state structures of (piq)2Ir(tmhd), (piq)2Ir(dapd), and (piq)2Ir(dend). All bond lengths are in Å.