PHOSPHORESCENT EMITTERS
First Claim
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1. A heteroleptic iridium compound Ir(L1)n(L2)3-n, having the formula:
- wherein n=1 or 2;
wherein is L1;
wherein is L2;
wherein R1, R2, R3, R4, and R5 may represent mono, di, tri, or tetra substitutions; and
wherein R1, R2, R3, R4, and R5 are each independently selected from the group consisting of hydrogen, alkyl, heteroalkyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl.
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Abstract
Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.
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Citations
28 Claims
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1. A heteroleptic iridium compound Ir(L1)n(L2)3-n, having the formula:
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wherein n=1 or 2; wherein is L1; wherein is L2; wherein R1, R2, R3, R4, and R5 may represent mono, di, tri, or tetra substitutions; and wherein R1, R2, R3, R4, and R5 are each independently selected from the group consisting of hydrogen, alkyl, heteroalkyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
wherein R4 is hydrogen or methyl.
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4. The compound of claim 1, wherein R1 is selected from the group consisting of alkyl, heteroalkyl, aryl, heteroaryl, substituted aryl, and substituted heteroaryl;
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wherein R1 does not form a conjugated system with L1.
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5. The compound of claim 4, wherein R1 is
wherein X1 and X2 are independently selected from C and N; -
wherein Y1 is not hydrogen; and wherein Y1 may be joined to other substituents on the aryl ring.
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6. The compound of claim 1, wherein each of R2, R3, and R5 are hydrogen.
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7. The compound of claim 1, wherein L1 is selected from the group consisting of:
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8. The compound of claim 1, wherein L2 is selected from the group consisting of:
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9. The compound of claim 7, wherein L2 is selected from the group consisting of:
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10. The compound of claim 1, wherein L1 is selected from the group consisting of:
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11. The compound of claim 1, wherein L2 is selected from the group consisting of:
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12. The compound of claim 10, wherein L2 is selected from the group consisting of:
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13. The compound of claim 1, wherein the compound is selected from the group consisting of:
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14. The compound of claim 1, wherein the compound is selected from the group consisting of:
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15. The compound of claim 1, wherein the compound is selected from the group consisting of:
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16. The compound of claim 1, wherein the compound has a narrower full width half maximum than either
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17. The compound of claim 1, wherein the compound has a lower sublimation temperature than either
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18. The compound of claim 1, wherein the compound is a green emissive dopant.
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19. An organic light emitting device comprising:
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an anode; a cathode; and an organic layer, disposed between the anode and the cathode, the organic layer further comprising a heteroleptic iridium compound Ir(L1)n(L2)3-n compound having the formula; wherein n=1 or 2; wherein is L1; wherein is L2; wherein R1, R2, R3, R4, and R5 may represent mono, di, tri, or tetra substitutions; and wherein R1, R2, R3, R4, and R5 are each independently selected from the group consisting of hydrogen, alkyl, heteroalkyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
is an emissive compound. -
21. The device of claim 19, wherein R1 is
wherein X1 and X2 are independently selected from C and N; -
wherein Y1 is not hydrogen; and wherein Y1 may be joined to other substituents on the aryl ring.
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22. The device of claim 19, wherein the compound is selected from the group consisting of:
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23. The device of claim 19, wherein the compound is selected from the group consisting of:
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24. The device of claim 19, wherein the compound is selected from the group consisting of:
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25. The device of claim 19, wherein the emissive layer further comprises a host.
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26. The device of claim 25, wherein the host has the formula:
wherein R1 and R2 represent, independently, mono, di, tri or tetra substitutions selected from alkyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl and heteroaryl, or no substitution; and wherein at least one of R1 and R2 includes a triphenylene group.
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27. The device of claim 25, wherein the host has the formula:
wherein each of R1, R2, and R3 is independently a hydrogen, a non-fused aryl group, or a non-fused heteroaryl group having one or more meta-substituents, wherein at least one of R1, R2, and R3 is not hydrogen; and wherein each meta-substituent is a non-fused aryl or heteroaryl group optionally substituted with further substituents selected from the group consisting of non-fused aryl groups, non-fused heteroaryl groups, and alkyl groups.
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28. A consumer product comprising a device, the device further comprising:
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an anode; a cathode; and an organic layer, disposed between the anode and the cathode, the organic layer further comprising a heteroleptic iridium compound Ir(L1)n(L2)3-n, compound having the formula; wherein n=1 or 2; wherein is L1; wherein is L2; wherein R1, R2, R3, R4, and R5 may represent mono, di, tri, or tetra substitutions; and wherein R1, R2, R3, R4, and R5 are each independently selected from the group consisting of hydrogen, alkyl, heteroalkyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl.
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Specification