Phosphorescent materials
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Accused Products
Abstract
Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
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Citations
20 Claims
- 1. A compound comprising a ligand L having the structure:
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17. 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 compound having the formula;
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18. A heteroleptic complex having the formula Ir(LA-B)2(LC-D),
wherein LA-B is
Specification