CPC H10K 85/342 (2023.02) [C07F 15/0033 (2013.01); C09K 11/06 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1022 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1033 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/1088 (2013.01); C09K 2211/1092 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 2101/10 (2023.02)] | 20 Claims |
1. A compound having a metal coordination complex structure;
wherein the compound is capable of functioning as an emitter in an organic light emitting device at room temperature;
wherein the compound has the formula of Pt(L1)(L2), each of L1 and L2 are a bidentate ligand, and L1 is connected to L2 to form a tetradentate ligand;
wherein the compound has a first substituent R1 at one of L1 and L2's periphery;
wherein the compound has a second substituent R2 at the other of L1 and L2's periphery;
wherein a first distance is the distance between the Pt and an atom in R1 that is the farthest away from the Pt;
wherein the first distance is longer than any distance between the Pt and any other atoms in the compound;
wherein a second distance is the distance between the Pt and an atom in R2 that is the farthest away from the Pt;
wherein when a sphere having a radius r is defined whose center is the Pt and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1 or R2, the first distance and the second distance are longer than the radius r by at least 1.5 Å; and
wherein at least one of the following is true:
(1) the first and second distances are all longer than r by at least 4.3 Å; or
(2) wherein L1 and L2 are each independently selected from the group consisting of:
wherein each X1 to X17 are independently selected from the group consisting of carbon and nitrogen;
wherein X is selected from the group consisting of BR′, NR′, PR′, O, S, Se, C═O, S═O, SO2, CR′R″, SiR′R″, and GeR′R″;
wherein R′ and R″ are optionally fused or joined to form a ring;
wherein each Ra, Rb, Rc, and Rd may represent from mono substitution to the possible maximum number of substitution, or no substitution;
wherein R′, R″, Ra, Rb, Rc, Rd, Re are each 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; and
wherein any two Ra, Rb, Rc, and Rd are fused or joined to form a ring; and
wherein at least one of the Ra, Rb, Rc, and Rd includes R1.
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