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US 2019/0058139 A1Published application
Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsBin Ma, Alan DeAngelis, Chuanjun Xia, Bert Alleyne
Life of this patent
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Abstract
Novel heteroleptic iridium complexes are described. These iridium compounds contain alkyl substituted phenylpyridine ligands, which provide these compounds with beneficial properties when the iridium complexes are incorporated into OLED devices.
Claims20
A compound comprising a heteroleptic iridium complex having the formula:
- wherein R1, R2, R3, R4, R5, and R6, are independently selected from the group consisting of hydrogen, deuterium, cycloalkyl, deuterated cycloalkyl, alkyl, and deuterated alkyl;
- wherein at least one of R1, R2, R3, R4, R5, and R6 is cycloalkyl, deuterated cycloalkyl, alkyl, or deuterated alkyl;
- wherein any two adjacent R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring;
- wherein ring A is attached to the 4- or 5-position of ring B;
- and
- wherein R and R′ represent mono-, di-, tri- or tetra-substitution and 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.
4 more elements
A first device comprising a first organic light emitting device, further comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a compound having the formula:
- wherein R1, R2, R3, R4, R5, and R6, are independently selected from the group consisting of hydrogen, deuterium, cycloalkyl, deuterated cycloalkyl, alkyl, and deuterated alkyl;
- wherein at least one of R1, R2, R3, R4, R5, and R6 is cycloalkyl, deuterated cycloalkyl, alkyl or deuterated alkyl;
- wherein any two adjacent R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring;
- wherein ring A is attached to the 4- or 5-position of ring B;
- and
- wherein R and R′ represent mono-, di-, tri- or tetra-substitution and 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.
8 more elements
A comsumer product comprising a first organic light emitting device, further comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a compound having the formula:
- wherein R1, R2, R3, R4, R5, and R6, are independently selected from the group consisting of hydrogen, deuterium, cycloalkyl, deuterated cycloalkyl, alkyl, and deuterated alkyl;
- wherein at least one of R1, R2, R3, R4, R5, and R6 is cycloalkyl, deuterated cycloalkyl, alkyl or deuterated alkyl;
- wherein any two adjacent R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring;
- wherein ring A is attached to the 4- or 5-position of ring B;
- and
- wherein R and R′ represent mono-, di-, tri- or tetra-substitution and 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.
8 more elements
Dependencies are inferred from the claim text.