Osmium(IV) complexes for OLED materials
AssigneeUniversal Display Corporation
InventorsJui-Yi Tsai, Chuanjun Xia, Miguel A. Esteruelas
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Abstract
A novel compound having the formula Os(L)n is disclosed, wherein Os is osmium(IV) metal, L is a ligand coordinating to the Os atom, and n is an integer from 1 to 6, wherein each L can be same or different, wherein at least one L is a multidentate ligand, and wherein the compound is neutral.
Claims20
A compound having the formula Os(L)n, wherein Os is osmium(IV) metal, L is a ligand coordinating to Os, and n is an integer from 1 to 6;
- wherein each L can be same or different;
- wherein at least one L is a multidentate ligand;
- and
- wherein the compound is neutral, wherein (i) the multidentate ligand is selected from the group consisting of:
- or (ii) the compound has a formula
- wherein X is a neutral coordinating atom selected from the group consisting of carbene, phosphorus, and nitrogen;
- wherein C is an anionic coordinating carbon atom;
- wherein C′ is carbene;
- wherein N is an anionic coordinating nitrogen atom;
- wherein O is an anionic coordinating oxygen atom;
- and
- wherein H is hydride.
A first device comprising a first organic light emitting device, the first organic light emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Os(L)n, wherein Os is Os(IV) metal, L is a ligand coordinating to Os, and n is an integer from 1 to 6;
- wherein each L can be same or different;
- wherein at least one L is a multidentate ligand;
- and
- wherein the compound is neutral, wherein (i) the multidentate ligand is selected from the group consisting of:
- or (ii) the compound has a formula
- wherein X is a neutral coordinating atom selected from the group consisting of carbene, phosphorus, and nitrogen;
- wherein C is an anionic coordinating carbon atom;
- wherein C′ is carbene;
- wherein N is an anionic coordinating nitrogen atom;
- wherein O is an anionic coordinating oxygen atom;
- and
- wherein H is hydride.
A formulation comprising a compound having the formula Os(L)n, wherein Os is Os(IV) metal, L is a ligand coordinating to Os, and n is an integer from 1 to 6 representing a maximum number of the L ligands that can coordinate to Os;
- wherein each L can be same or different;
- wherein at least one L is a multidentate ligand;
- and
- wherein the compound is neutral, wherein (i) the multidentate ligand is selected from the group consisting of:
- or (ii) the compound has a formula
- wherein X is a neutral coordinating atom selected from the group consisting of carbene, phosphorus, and nitrogen;
- wherein C is an anionic coordinating carbon atom;
- wherein C′ is carbene;
- wherein N is an anionic coordinating nitrogen atom;
- wherein O is an anionic coordinating oxygen atom;
- and
- wherein H is hydride.
Dependencies are inferred from the claim text.