Organic electroluminescent materials and devices
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Abstract
Novel organic compounds containing an imidazole core and electron donor and acceptor fragments are provided. By selection of the disclosed donor and acceptor groups, compounds exhibiting small singlet-triplet gaps are obtained. These compounds are useful in OLED devices as host materials or as delayed fluorescent emitters.
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Citations
22 Claims
- 1. A compound having the formula:
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6. A first device comprising a first organic light emitting device, further comprising:
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an anode; a cathode; and an organic layer, disposed between the anode and the cathode; wherein the organic layer comprises a compound having the formula; - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of making a first organic light emitting device, comprising:
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depositing an anode on a substrate; depositing at least one organic layer comprising a compound of formula; - View Dependent Claims (22)
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Specification