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US 12,312,367 B2Granted
Iridium complex-containing composition, organic light emitting device having the same, display apparatus, imaging apparatus, electronic equipment, lighting apparatus, and moving body
AssigneeCanon Kabushiki Kaisha
InventorsTakeshi Sekiguchi, Kentaro Ito, Katsuyuki Hotta
Life of this patent
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Abstract
A composition that contains an iridium complex and an isomer of the iridium complex, in which the amount of the isomer of the iridium complex is decreased. The iridium complex is a homo-N-trans (HNT) iridium complex having an iridium atom, and a first ligand, a second ligand, and a third ligand that are bonded to the iridium atom. The isomer has an iridium atom, a fourth ligand, a fifth ligand, and the third ligand. The composition ratio of the isomer relative to a total of the iridium complex and the isomer is 1.0% or less.
Claims23
A composition comprising:
- a homo-N-trans (HNT) iridium complex having an iridium atom, and a first ligand, a second ligand, and a third ligand that are bonded to the iridium atom,
- the second ligand having the same structure as the first ligand,
- the third ligand having a different structure from the first and second ligands;
- and
- an isomer of the iridium complex, the isomer having an iridium atom, a fourth ligand, a fifth ligand, and the third ligand,
- the fourth ligand being a ligand represented by the same rational formula as that of the first ligand, and
- the fifth ligand being a ligand represented by the same rational formula as that of the second ligand,
- wherein a composition ratio of the isomer relative to a total of the iridium complex and the isomer is 1.0% or less and more than 0%.
5 more elements
Dependencies are inferred from the claim text.