ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
First Claim
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1. A compound having a structure (LA)nMLm according to Formula 1:
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Abstract
Imidazophenanthridine ligands and metal complexes are provided. The compounds exhibit improved stability through a linking substitution that links a nitrogen bonded carbon of an imidizole ring to a carbon on the adjacent fused aryl ring. The compounds may be used in organic light emitting devices, particularly as emissive dopants, providing devices with improved efficiency, stability, and manufacturing. In particular, the compounds provided herein may be used in blue devices having high efficiency.
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Citations
52 Claims
- 1. A compound having a structure (LA)nMLm according to Formula 1:
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4-6. -6. (canceled)
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9-12. -12. (canceled)
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14-16. -16. (canceled)
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18. (canceled)
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21-22. -22. (canceled)
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25-26. -26. (canceled)
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31-38. -38. (canceled)
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40-43. -43. (canceled)
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44. An organic light emitting device (OLED) comprising:
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an anode; a cathode; an organic layer disposed between the anode and the cathode, wherein the organic layer comprising a compound having a structure (LA)nMLm according to Formula 1; - View Dependent Claims (45, 48)
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46-47. -47. (canceled)
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49-50. -50. (canceled)
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52-69. -69. (canceled)
Specification