Platinum metal complex and use thereof in organic electroluminescent device
The present invention relates to a platinum metal complex and an application thereof in an organic light-emitting device. The platinum metal complex is a compound having a structure of chemical formula (I). An organic light-emitting device to which the compound is applied has a relatively low driving voltage, a relatively high luminous efficiency and improved service life to a certain extent; therefore, the complex has the potential of being applied in the field of organic light-emitting devices. Also provided is an organic light-emitting device, including a cathode, an anode, and an organic layer. The organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer; and at least one layer in the organic layer contains the compound of structural formula (I).
1. A platinum metal complex, being a compound having a structure as shown in Formula (I):
wherein:
R 1 -R 32 are each independently selected from:
hydrogen,
deuterium,
halogen,
substituted or unsubstituted alkyl having 1-20 carbon atoms,
substituted or unsubstituted cycloalkyl having 3-20 carbon atoms,
substituted or unsubstituted alkoxy having 1-20 carbon atoms,
substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, and
cyano;
Ar 1 and Ar 2 are independently selected from an aromatic group having 6-14 carbon atoms and an heteroaromatic group having 3-12 carbon atoms, respectively;
heteroatom in the heteroaromatic group is selected from one or more of O, S and N; and
the substitution is chosen from the group consisting of substitution by deuterium, halogen and C1-8 alkyl.
2. The platinum metal complex according to claim 1 , wherein;
the R 1 -R 32 are independently selected from:
hydrogen,
deuterium,
halogen,
substituted or unsubstituted alkyl having 1-6 carbon atoms,
substituted or unsubstituted cycloalkyl having 3-6 carbon atoms,
substituted or unsubstituted aryl having 6-12 carbon atoms, and
substituted or unsubstituted heteroaryl having 3-6 carbon atoms, respectively; and
the Ar 1 and the Ar 2 are independently selected from phenyl and pyridine, respectively.
3. The platinum metal complex according to claim 2 , wherein:
the R 1 -R 32 are independently selected from:
hydrogen,
deuterium,
substituted or unsubstituted alkyl having 1-4 carbon atoms, and
substituted or unsubstituted cycloalkyl having 3-6 carbon atoms, phenyl, tolyl or pyridyl, respectively; and
the Ar 1 and the Ar 2 are the same.
4. The platinum metal complex according to claim 3 , wherein the R 1 -R 32 are independently selected, respectively, from:
hydrogen,
methyl,
isopropyl, and
tert-butyl.
5. The platinum metal complex according to claim 4 ,
wherein;
R 1 -R 3 , R 12 -R 17 and R 26 -R 30 in the R 1 -R 32 are hydrogen;
the remaining R groups are selected from the group consisting of hydrogen, methyl, isopropyl or tert-butyl; and
the Ar 1 and the Ar 2 are phenyl.
6. The platinum metal complex according to claim 1 , which is one of the following compounds:
7. The platinum metal complex according to claim 6 , having one of the following structures:
8. A precursor of the platinum metal complex according to claim 1 , namely, a ligand, having the following structural formula:
9. An organic light-emitting device comprising the platinum metal complex according to claim 1 that is an organic thin film transistor, an organic photovoltaic device, a luminescent electrochemical cell, or a chemical sensor.
10. An organic light-emitting device, comprising:
a cathode,
an anode, and
an organic layer,
wherein;
the organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron injection layer and an electron transport layer; and
the organic layer includes the platinum metal complex according to claim 1 .
11. The organic light-emitting device according to claim 10 , wherein the platinum metal complex is located at the light-emitting layer.
12. The organic light-emitting device according to claim 10 , wherein:
the organic layer has a total thickness of 1-1000 nm; and
the organic layer forms a thin film via evaporation or a solution method.
13. A precursor of the platinum metal complex according to claim 2 , namely, a ligand, having the following structural formula:
14. An organic light-emitting device comprising the platinum metal complex according to claim 2 that is an organic thin film transistor, an organic photovoltaic device, a luminescent electrochemical cell, or a chemical sensor.
15. An organic light-emitting device, comprising:
a cathode,
an anode, and
an organic layer,
wherein:
the organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron injection layer and an electron transport layer; and
the organic layer includes the platinum metal complex according to claim 2 .
16. The organic light-emitting device according to claim 15 , wherein the platinum metal complex is located at the light-emitting layer.
17. A precursor of the platinum metal complex according to claim 6 , namely, a ligand, having the following structural formula:
18. An organic light-emitting device comprising the platinum metal complex according to claim 6 that is an organic thin film transistor, an organic photovoltaic device, a luminescent electrochemical cell, or a chemical sensor.
19. An organic light-emitting device, comprising:
a cathode,
an anode, and
an organic layer,
wherein:
the organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron injection layer and an electron transport layer; and
the organic layer includes the platinum metal complex according to claim 6 .
20. The organic light-emitting device according to claim 19 , wherein the platinum metal complex is located at the light-emitting layer.