Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsMingjuan Su, Lichang Zeng, Chuanjun Xia
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Abstract
A new series of iptycene derivatives as ligands for metal complexes that are useful as phosphorescent emitters for incorporation into OLEDs are disclosed. Provided are compositions that include a compound including a chemical group of Formula I wherein (1) the chemical group of Formula I is included as at least one of the substituents in a bidentate ligand forming the metal complex, or (2) when the substituents in a bidentate ligand forming the metal complex are attached to a six-membered ring, at least one of the such substituents join adjacent substituents and fuse into the six-membered ring attached thereto to form a chemical group having Formula I.
Claims20
A composition comprising:
- a non-polymeric first compound;
- wherein the first compound is a metal coordination complex having a metal-carbon bond;
- wherein the first compound is capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature;
- wherein the first compound comprises a chemical group having the formula:
- wherein X1 to X12 are each a carbon atom or a nitrogen atom;
- wherein RA, RB, and RC each independently represents none to maximum available number of substituents;
- wherein RA, RB, and RC are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, arylalkyl, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
- wherein at least one of X1 to X12, RA, RB, and RC is bonded to the metal,
- wherein any unlabeled atoms depicted with bonds in Formula I are carbon, and any unlabeled substituents implicitly attached to Formula I are hydrogen;
- and
- wherein any hydrogen may be replaced with a deuterium.
An organic light-emitting device (OLED) comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a non-polymeric first compound;
- wherein the first compound is a metal coordination complex having a metal-carbon bond;
- wherein the first compound is capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature;
- wherein the first compound comprises a chemical group having the formula:
- wherein X1 to X12 are each a carbon atom or a nitrogen atom;
- wherein RA, RB, and RC each independently represents none to maximum available number of substituents;
- wherein RA, RB, and RC are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, arylalkyl, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
- wherein at least one of X1 to X12, RA, RB, and RC is bonded to the metal,
- wherein any unlabeled atoms depicted with bonds in Formula I are carbon, and any unlabeled substituents implicitly attached to Formula I are hydrogen;
- and
- wherein any hydrogen may be replaced with a deuterium.
Dependencies are inferred from the claim text.