Metal complex with fluorine substitution
AssigneeBeijing Summer Sprout Technology Co., Ltd.
InventorsWei Cai, Ming Sang, Zhen Wang, Tao Wang, Chi Yuen Raymond Kwong, Chuanjun Xia
Life of this patent
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Abstract
A metal complex with fluorine substitution is disclosed, which employs a series of new ligands containing fluorine-substituted structure can be used as a luminescent material in an emissive layer of an electroluminescent device. By using the metal complex can provide much longer device lifetime, better thermal stability, no blue-shifted illumination, and higher luminous efficiency. An electroluminescent device and compound formulation are also disclosed.
Claims19
A metal complex comprising a partial structure represented by Formula 1:
- wherein Cy is a substituted or unsubstituted carbocyclic group or heterocyclic group having 5 to 24 aromatic ring atoms;
- wherein Cy is combined with M through a metal-carbon bond or a metal-nitrogen bond;
- wherein M is selected from the group consisting of copper, silver, gold, rhodium, ruthenium, palladium, osmium, iridium, and platinum;
- preferably, M is selected from iridium or platinum;
- wherein X is selected from O, S or Se;
- wherein X1 to X7 are independently selected from N or CR;
- wherein R is selected from the group consisting of hydrogen, deuterium, halogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted heteroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted arylalkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a nitrile group, an isonitrile group, a thioalkyl group, a sulfinyl group, a sulfonyl group, a phosphine group, and combinations thereof;
- two adjacent substitutions are optionally joined to form a ring;
- X1, X2, X3, or X4 is connected to M through a metal-carbon bond or a metal-nitrogen bond.
An electroluminescent device comprises an anode, a cathode, and an organic layer, disposed between the anode and the cathode, wherein the organic layer comprises a metal complex comprising a partial structure represented by Formula 1:
- wherein Cy is a substituted or unsubstituted carbocyclic group or heterocyclic group having 5 to 24 aromatic ring atoms;
- wherein Cy is combined with M through a metal-carbon bond or a metal-nitrogen bond;
- wherein M is selected from the group consisting of copper, silver, gold, rhodium, ruthenium, palladium, osmium, iridium, and platinum;
- wherein X is selected from O, S or Se;
- wherein X1 to X7 are independently selected from N or CR;
- wherein R is selected from the group consisting of hydrogen, deuterium, halogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted heteroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted arylalkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a nitrile group, an isonitrile group, a thioalkyl group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;
- two adjacent substitutions are optionally joined to form a ring;
- X1, X2, X3, or X4 is connected to M through a metal carbon bond or a metal-nitrogen bond.
Dependencies are inferred from the claim text.