Synthesis, photoluminescence properties of novel cationic Ir(III) complexes with phenanthroimidazole derivative as the ancillary ligand

摘要

Graphical abstractTwo novel cationic Ir(III) complexes were successfully synthesized and characterized, and their photophysical, electrochemical properties and thermal stabilities were investigated systematically.Display OmittedAbstractTwo novel cationic Ir(III) complexes,[(nbt)2Ir(L)](PF6)and[(CF3-bt)2Ir(L)](PF6), wherenbt=2-(1-naphthyl)benzothiazole;CF3-bt=2-phenyl-6-(trifluoromethyl)-benzothiazole andL=1-(4-(tert-butyl)phenyl)-2-(5-(9-(p-tolyl)-9H-carbazol-3-yl)pyridin-2-yl)-1H-phenanthro [9,10-d]imidazole, were successfully synthesized and characterized. The structures ofLand[(nbt)2Ir(L)](PF6)were confirmed by single crystal X-ray diffraction. Their photophysical, electrochemical properties and thermal stabilities were investigated systematically. The results showed that the Ir(III) complexes had higher thermal stabilities, and exhibited strong red emi