CN-119751512-B - Organic metal iridium complex and organic electroluminescent device comprising same

Abstract

The invention belongs to the technical field of organic electroluminescent diodes, and discloses an organic metal iridium complex and an organic electroluminescent device containing the same. The structure of the organic metal iridium complex is shown as a formula I: according to the organic metal iridium complex, the phenyl is added at the fixed position on the azadibenzofuran and used as a ligand, tertiary butyl is substituted on the naphthalene ring on the ligand, and the structural combination of the main ligand and the auxiliary ligand is adjusted, so that the luminous efficiency and the service life of the organic electroluminescent device can be further improved.

Inventors

• WANG HUI
• MOU YANG
• ZHANG GUOXU
• Quan Guangchao
• ZHAO MING
• HAN BO

Assignees

• 吉林奥来德光电材料股份有限公司

Dates

Publication Date

20260512

Application Date

20241129

Claims (5)

1. 1. The organic metal iridium complex is characterized by having a structural general formula shown in formula I: ; Wherein, the R 1 、R 2 、R 3 、R 4 is independently selected from hydrogen, deuterium, methyl, ethyl, propyl and tert-butyl; R x and R y are each independently selected from hydrogen, deuterium, and any of the following structures: ; “ "means the position of attachment of a substituent; r Z is selected from hydrogen, -CN, -D or-CD 3 .
2. 2. An organometallic iridium complex characterized in that the structure of the organometallic iridium complex is selected from any one of the following compounds: ; ; 。
3. 3. An organic electroluminescent device, characterized in that the organic electroluminescent device comprises an organic layer, and the organic layer comprises the organometallic iridium complex according to any one of claims 1 to 2.
4. 4. An organic electroluminescent device according to claim 3, wherein the organic layer comprises a light-emitting layer comprising the organometallic iridium complex.
5. 5. The organic electroluminescent device of claim 4, wherein the organometallic iridium complex is used as a red light-doped material.

Description

Organic metal iridium complex and organic electroluminescent device comprising same Technical Field The invention belongs to the technical field of organic electroluminescent diodes, and particularly relates to an organic metal iridium complex and an organic electroluminescent device comprising the same. Background An Organic LIGHT EMITTING (OLED) is a device with a sandwich-like structure, and includes positive and negative electrode layers and an Organic functional material layer sandwiched between the electrode layers. And applying voltage to the electrode of the OLED device, injecting positive charges from the positive electrode, injecting negative charges from the negative electrode, and transferring and meeting the positive charges and the negative charges in the organic layer to emit light compositely under the action of an electric field. Because the OLED device has the advantages of high brightness, quick response, wide viewing angle, simple process, flexibility and the like, the OLED device has a great deal of attention in the novel display technical field and the novel illumination technical field. At present, the technology is widely applied to display panels of products such as novel illumination lamps, smart phones and tablet computers, and further expands the application field of large-size display products such as televisions, and is a novel display technology with rapid development and high technical requirements. With the continuous advancement of the field of illumination and display of OLEDs, research on core materials thereof is also focused on, because an OLED device with good efficiency and long service life is usually the result of optimized matching of device structures and various organic materials. In order to prepare the OLED light-emitting device with lower driving voltage, better light-emitting efficiency and longer service life of the device, the performance of the OLED device is continuously improved, the structure and the manufacturing process of the OLED device are required to be innovated, and the photoelectric functional material in the OLED device is required to be continuously researched and innovated so as to prepare the functional material with higher performance. Based on this, the OLED materials community has been striving to develop new organic electroluminescent materials to achieve low starting voltage, high luminous efficiency and better lifetime of the device. Disclosure of Invention In view of the above, the present disclosure provides an organometallic iridium complex and an organic electroluminescent device including the same, which address the shortcomings of the prior art. According to the organic metal iridium complex disclosed by the invention, the phenyl group is added at the fixed position on the azadibenzofuran as the ligand, and the tertiary butyl group is substituted on the naphthalene ring on the ligand, so that the structural combination of the main ligand and the auxiliary ligand is adjusted, and the luminous efficiency and the service life of the organic electroluminescent device can be further improved. In order to achieve the above object, a first object of the present invention is to provide an organometallic iridium complex, which adopts the following technical scheme: An organometallic iridium complex having the structure of formula I: Wherein, the R 1、R2、R3、R4 is independently selected from hydrogen, deuterium, methyl, ethyl, propyl and tert-butyl; R x and R y are each independently selected from hydrogen, deuterium, substituted or unsubstituted C1-C30 alkyl; r Z is selected from hydrogen, -CN, -D or-CD 3. Alternatively, R x and R y are each independently selected from hydrogen, deuterium, substituted or unsubstituted C1-C12 alkyl. Further, R x and R y are each independently selected from hydrogen, deuterium, and any of the following structures: represents the position of attachment of the substituent. Further, the above groups may be partially or fully substituted with deuterium. In the above-described technical scheme, "substitution" means that a hydrogen atom bonded to a carbon atom of a compound becomes another substituent, and the position of substitution is not limited as long as the position is a position where the hydrogen atom is substituted (i.e., a position where a substituent may be substituted), and when two or more substituents are present, two or more substituents may be the same or different from each other. Further, the above "substitution" means substitution with one, two or more substituents selected from deuterium, cyano, deuterated methyl, C1-C6 alkyl, C3-C10 cycloalkyl, alkoxy, C6-C18 aryl, C3-C24 heterocyclyl, or with or without substituents linked with two or more of the substituents shown above. Further, formula I has any one of the following structures: a second object of the present invention is to provide an organic electroluminescent device comprising an organic layer comprising the organometallic iridium compl