Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsDavid KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER
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 diode devices comprising these compounds are also described.
Claims20
A phosphorescent compound comprising a metal and a monoanionic, bidentate ligand as set forth below, wherein the metal is selected from the group consisting of the non-radioactive metals with atomic numbers greater than 40, and wherein the bidentate ligand may be linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand;
- wherein:
- E1a-q are selected from the group consisting of C and N and collectively comprise an 18 pi-electron system, provided that E1a and E1p are different;
- R1b and R1c are linked, and R1b and R1c are independently, hydrocarbyl, heteroatom substituted hydrocarbyl, OR2a, SR2a, NR2aR2b, BR2aR2b, or SiR2aR2bR2c, where R2a-c are each, independently, hydrocarbyl or heteroatom substituted hydrocarbyl;
- R1a and R1d-i 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 R1d-i and R2a-c may be linked to form a saturated or unsaturated, aromatic or non-aromatic ring.
An organic light-emitting device (OLED) comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a compound comprising a metal and a monoanionic, bidentate ligand as set forth below, wherein the metal is selected from the group consisting of the non-radioactive metals with atomic numbers greater than 40, and wherein the bidentate ligand may be linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand;
- wherein:
- E1a-q are selected from the group consisting of C and N and collectively comprise an 18 pi-electron system, provided that E1a and E1p are different;
- R1b and R1c are linked, and R1b and R1c are independently, hydrocarbyl, heteroatom substituted hydrocarbyl, OR2a, SR2a, NR2aR2b, BR2aR2b, or SiR2aR2bR2c, where R2a-c are each, independently, hydrocarbyl or heteroatom substituted hydrocarbyl;
- R1a and R1d-i 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 R1d-i and R2a-c may be linked to form a saturated or unsaturated, aromatic or non-aromatic ring.
A consumer product comprising an organic light-emitting device, the organic light-emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a compound comprising a metal and a monoanionic, bidentate ligand as set forth below, wherein the metal is selected from the group consisting of the non-radioactive metals with atomic numbers greater than 40, and wherein the bidentate ligand may be linked with other ligands to comprise a tridentate, tetradentate pentadentate or hexadentate ligand
- wherein:
- E1a-q are selected from the group consisting of C and N and collectively comprise an 18 pi-electron system, provided that E1a and E1p are different;
- R1b and R1c are linked, and R1b and R1c are independently, hydrocarbyl, heteroatom substituted hydrocarbyl, OR2a, SR2a, NR2aR2b, BR2aR2b, or SiR2aR2bR2c, where R2a-c are each, independently, hydrocarbyl or heteroatom substituted hydrocarbyl;
- R1a and R1d-i 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 R1d-i and R2a-c may be linked to form a saturated or unsaturated, aromatic or non-aromatic ring;
- and
- wherein the consumer product is one of a flat panel display, a computer monitor, a television, a billboard, a light for interior or exterior illumination and/or signaling, a heads up display, a fully transparent display, a flexible display, a laser printer, a telephone, a cell phone, a personal digital assistant (PDA), a laptop computer, a digital camera, a camcorder, a viewfinder, a micro-display, a vehicle, a large area wall, theater or stadium screen, or a sign.
Dependencies are inferred from the claim text.