2-azatriphenylene materials for organic light emitting diodes
AssigneeUniversal Display Corporation
InventorsBin Ma, Raymond C. Kwong
Life of this patent
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Abstract
Compounds containing 2-azatriphenylene are provided. In particular, compounds containing a 2-azatriphenylene core having an additional aromatic group are provided. The compounds provided may be emissive or non-emissive materials. The compounds may be used in organic light emitting devices, particularly as host materials, hole blocking layer materials, or emitting dopants. Devices comprising 2-azatriphenylene containing compounds may demonstrate improved stability and efficiency.
Claims21
A compound including the structure;
- wherein R1, R2, and R3 may represent up to tetra substitutions;
- wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl, and heteroaryl;
- and
- wherein at least one of R1, R2, and R3 comprises a heteroaryl.
A compound comprising a ligand L having a formula selected from the group consisting of:
- wherein A is a 5-membered or 6-membered aryl or heteroaryl ring;
- wherein RA may represent up to tetra substitutions;
- wherein RA is selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl, and heteroaryl;
- wherein R1, R2, R3, R4, and R5 may represent up to tetra substitutions;
- wherein R1, R2, R3, R4 and R5 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl, and heteroaryl;
- and
- wherein the ligand L is coordinated to a metal having an atomic number greater than 40.
A first device comprising an organic light emitting device, comprising:
- an anode;
- a cathode;
- and
- a first organic layer, disposed between the anode and the cathode, the first organic layer further comprising a compound that includes the structure:
- wherein R1, R2, and R3 may represent up to tetra substitutions;
- wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl, and heteroaryl;
- and
- wherein at least one of R1, R2, and R3 comprises a heteroaryl.
A first device comprising an organic light emitting device, comprising:
- an anode;
- a cathode;
- and
- a first organic layer, disposed between the anode and the cathode, the first organic layer further comprising a compound comprising
- a ligand L having a formula selected from the group consisting of:
- wherein A is a 5-membered or 6-membered aryl or heteroaryl ring;
- wherein RA may represent up to tetra substitutions;
- wherein RA is selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl, and heteroaryl;
- wherein R1, R2, R3, R4, and R5 may represent up to tetra substitutions;
- wherein R1, R2, R3, R4 and R5 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl, and heteroaryl;
- and
- wherein the ligand L is coordinated to a metal having an atomic number greater than 40.
Dependencies are inferred from the claim text.