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US 8,142,909 B2Granted
Blue phosphorescent imidazophenanthridine materials
AssigneeUniversal Display Corporation
InventorsScott Beers, Peter B. Mackenzie, Jui-Yi Tsai, Chun Lin, Walter Yeager, Edward Barron, David B. Knowles, Robert W. Walters, Cory S. Brown
Life of this patent
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Abstract
Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting devices comprising these compounds are also described.
Claims44
An iridium complex of the formula
- wherein n=1, 2 or 3;
- R1a, R1b, R1c, R1d, R1e, R1f, R1g, R1h, and R1i are each, independently, H, hydrocarbyl, heteroatom substituted hydrocarbyl, cyano, fluoro, OR2a, SR2a, NR2aR2b, BR2aR2b, or SiR2aR2bR2c, where R2a-c are each, independently, hydrocarbyl or heteroatom substituted hydrocarbyl, and where any two of R1a-i and R2a-c may be linked to form a saturated or unsaturated, aromatic or non-aromatic ring;
- and
- X-Y is an ancillary ligand.
1 more element
A device, comprising:
- an anode;
- a cathode;
- and
- an organic emissive layer, disposed between the anode and the cathode, the organic layer further comprising an emissive complex having the formula:
- wherein n=1, 2 or 3;
- R1a, R1b, R1c, R1d, R1e, R1f, R1g, R1h, and R1i are each, independently, H, hydrocarbyl, heteroatom substituted hydrocarbyl, cyano, fluoro, OR2a, SR2a, NR2aR2b, or SiR2aR2bR2c, where R2a-c are each, independently, hydrocarbyl or heteroatom substituted hydrocarbyl, and where any two of R1a-i and R2a-c may be linked to form a saturated or unsaturated, aromatic or non-aromatic ring;
- and
- X-Y is an ancillary ligand.
5 more elements
Dependencies are inferred from the claim text.