主权项 |
1. A compound having a formula M(LA)x(LB)y(LC)z:
wherein the ligand LA is wherein the ligand LB is wherein the ligand LC is wherein M is a metal having an atomic weight greater than 40; wherein x is 1, 2, or 3; wherein y is 0, 1, or 2; wherein z is 0, 1, or 2; wherein x+y+z is the oxidation state of the metal M; wherein X is carbon or nitrogen; wherein rings C and D are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; wherein RA, RB, RC, and RD each independently represent mono, di, tri, or tetra-substitution, or no substitution; wherein each of RA, RB, RC, RD, RX, RY, and RZ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein R1 and R2 are each independently selected from the group consisting of alkyl, cycloalkyl, silyl, partially or fully deuterated variants thereof, partially or fully fluorinated variants thereof, and combinations thereof; provided that when R1 and R2 are each a non-fluorinated alkyl, they are fused into a cycloalkyl; and wherein any adjacent substituents are optionally joined or fused into a ring. |