Organometallic materials and electroluminescent devices
OwnerShouquan Huo, Joseph Deaton +2inventors
InventorsShouquan Huo, Joseph Deaton, Marina Kondakova, Christopher Brown
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Abstract
An electroluminescent device comprises a light-emitting layer containing an organometallic compound comprising a metal and a ligand that coordinates to the metal through at least four bonds as represented by Formula (1) wherein at least one is a carbon-metal bond: MX)n (1) wherein M represents a metal, X represents an independently selected atom, n≧4, at least one X is carbon, and all X are linked to form a multidentate ligand.
Claims37
An electroluminescent device comprising a light-emitting layer containing an organometallic compound comprising a metal and a ligand that coordinates to the metal through at least four bonds as represented by Formula (1) wherein at least one is a carbon-metal bond:
- MX)n (1)
- wherein M represents a metal, X represents an independently selected atom, n≧4, at least one X is carbon, and all X are linked to form a multidentate ligand.
A method for preparation of an organometallic compound that has a structure represented by Formula (8), (9), (10), (11), and (12):
- wherein,
- M is Pt;
- R1-R7 represent hydrogen or independently selected substituents, provided that R1 and R2, R2 and R3, R3 and R4, R4 and R5, R5 and R6, as well as R6 and R7 may join to form a ring group;
- R8-R14 represent hydrogen or independently selected substituents, provided that R8 and R9, R9 and R10, R10 and R11, R11 and R12, R12 and R13, as well as R13 and R14 may join to form a ring group;
- R21-R31 and R41-R51 represent hydrogen or independently selected substituents;
- G represents nitrogen or carbon;
- and
- E represents a bridging group selected from the following:
- wherein R and R′ represent hydrogen or independently selected substituents;
- provided R and R′ may combine to form a ring group comprising a step of reacting, in an organic solvent, a tetradentate cyclometallating ligand with a platinum (II) salt;
- or
- wherein,
- R1-R7 represent hydrogen or independently selected substituents, provided that R1 and R2, R2 and R3, R3 and R4, R4 and R5, R5 and R6, as well as R6 and R7 may combine to form a ring group;
- R8-R14 represent hydrogen or independently selected substituents, provided that R8 and R9, R9 and R10, R10 and R11, R11 and R12, R12 and R13, as well as R13 and R14 may combine to form a ring group;
- Z1-Z5 represent hydrogen or independently selected substituents, provided that Z1 and Z2, Z2 and Z3, Z3 and Z4, as well as Z4 and Z5 may combine to form a ring group,
- comprising a step of reacting, in an organic solvent, a tetradentate cyclometallating ligand with a platinum (II) salt.
An organometallic compound comprising a metal and a tetradentate cyclometallating ligand that coordinates to the metal through four bonds wherein at least one is a carbon-metal bond.
Dependencies are inferred from the claim text.