CPC C07F 15/0033 (2013.01) [C09K 11/06 (2013.01); H10K 85/342 (2023.02); H10K 85/6572 (2023.02); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02)] | 9 Claims |
1. A compound having a formula of M(LA)x(LB)y(LC)z wherein LB and LC are each a bidentate ligand; and wherein x is 1, 2, or 3; y is 0, 1, or 2; z is 0, 1, or 2; and x+y+z is the oxidation state of the metal M;
wherein ligand LA has the structure of Formula I
wherein:
A1 is CF3;
R1 is selected from the group consisting of alkyl, cycloalkyl, fluorine, and combinations thereof;
R2 is and does not comprise fluorine;
R3, R4, and R5 are each independently a hydrogen or a substituent selected from the group consisting of deuterium, alkyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, fluorine, and combinations thereof;
one of R3, R4, or R5 is fluorine;
A1 and R1 are different;
R6 is hydrogen, alkyl, or cycloalkyl; and
wherein one of the following is true:
R5 is fluorine and R1, R3, and R4 are each alkyl; or
R5 is CF3;
wherein the ligand LA is coordinated to a metal M;
wherein the metal M can be coordinated to other ligands;
wherein M is Ir;
wherein the ligand LA can be linked with other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand; and
wherein two of R3, R4, or R5 can be joined or fused together to form a ring;
wherein ligand LB is selected from the group consisting of:
wherein j′ is an integer from 1 to 400, and for each LBj′, the substituents RE and G are defined as follows:
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wherein R1 to R20 have the following structures:
and
wherein G1 to G20 have the following structures
wherein when ligand LB has the structure LBj′-7 based on
RE is selected from the
group consisting of
wherein ligand LC is selected from the group consisting of:
wherein: each Y1 to Y13 are independently selected from the group consisting of carbon and nitrogen;
Y′ is selected from the group consisting of B Re, N Re, P Re, O, S, Se, C=O, S=O, SO2, CReRf, SiReRf, and GeReRf′; wherein Re and Rf can be fused or joined to form a ring;
each Ra, Rb, Rc, and Rd independently represents from mono substitution to the maximum possible number of substitutions, or no substitution;
each Ra, Rb, Rc, Rd, Re and Rf is independently a hydrogen or a substituent selected from the group consisting of deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acid, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
any two adjacent substituents of Ra, Rb, Rc, and Rd can be fused or joined to form a ring or form a multidentate ligand.
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