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CN-118420628-B - Compound containing triazine structure and organic electroluminescent device

CN118420628BCN 118420628 BCN118420628 BCN 118420628BCN-118420628-B

Abstract

The invention designs a compound containing a triazine structure and an organic electroluminescent device, and the compound has very good thermal stability and chemical stability, so that the stability and the service life of the device are effectively improved. The device has higher conjugation effect, further has good carrier mobility, and improves the luminous efficiency of the device. All the compounds of the invention have certain torque and steric hindrance, and further have proper triplet energy level, so that the compounds are more suitable for being used as RH, the triplet energy level can be better matched with RD for use, the transfer of energy from RH to RD is facilitated, and the luminous efficiency and the service life of the device are further improved. Through device verification, the devices prepared by using the compound have good luminous efficiency and service life.

Inventors

  • XU JUN
  • GUO SHUAI
  • HUANG MINGHUI
  • MA RUJIE

Assignees

  • 南京高光半导体材料有限公司

Dates

Publication Date
20260512
Application Date
20240430

Claims (10)

  1. 1. A compound containing a triazine structure is characterized in that the chemical structural formula is shown as formula 1: ; Wherein, the X is S or O; L 1 and L 2 are each independently a single bond, a substituted or unsubstituted C6-C20 arylene group, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C6-C30 aryl, C6-C30 deuterated aryl, C5-C30 heteroaryl; Ar 1 and Ar 2 are substituted or unsubstituted aryl of C6-C30 or heteroaryl of C5-C30, the substituents of which are selected from one or more of deuterium, fluorine, cyano, alkyl of C1-C10, deuterated alkyl of C1-C10, aryl of C6-C30, deuterated aryl of C6-C30, heteroaryl of C5-C30; r 1 -R 2 is each independently hydrogen, deuterium, fluorine, cyano, C1-C10 alkyl, C1-C10 deuterated alkyl, C6-C20 aryl or C6-C20 deuterated aryl; n and m are positive integers of 0-4.
  2. 2. A compound according to claim 1 wherein, ; Wherein, the X is S or O; L 1 and L 2 are each independently a single bond or a substituted or unsubstituted phenyl, naphthyl, biphenyl group, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C6-C30 aryl, C6-C30 deuterated aryl, C5-C30 heteroaryl; Ar 1 and Ar 2 are substituted or unsubstituted aryl of C6-C18 or heteroaryl of C5-C24, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C1-C6 alkyl, C1-C6 deuterated alkyl, C6-C18 aryl, C6-C18 deuterated aryl, C5-C24 heteroaryl.
  3. 3. A compound according to claim 1 wherein, L 1 and L 2 are each independently a single bond, a substituted or unsubstituted C6-C20 arylene group, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C6-C30 aryl; Ar 1 and Ar 2 are substituted or unsubstituted phenyl, biphenyl, anthracenyl, dibenzofuranyl, dibenzothiophenyl, fluorenyl, phenanthryl, benzophenanthrofuranyl, wherein the substituent is selected from one or more of deuterium, fluorine, cyano, C6-C12 aryl, C6-C12 deuterated aryl and C5-C20 heteroaryl.
  4. 4. A compound according to claim 1 wherein, L 1 and L 2 are each independently a single bond or a substituted or unsubstituted phenyl, naphthyl, biphenyl group, the substituents of which are selected from one or more of deuterium, fluorine, cyano; Ar 1 and Ar 2 are substituted or unsubstituted phenyl, biphenyl, dibenzofuranyl, dibenzothiophenyl, fluorenyl or phenanthryl, wherein the substituent is selected from one or more of deuterium, fluorine, cyano, C6-C12 aryl, C6-C12 deuterated aryl and C5-C20 heteroaryl.
  5. 5. A compound according to claim 1 wherein, L 1 and L 2 are each independently a single bond, a substituted or unsubstituted phenyl or biphenyl group; Ar 1 and Ar 2 are substituted or unsubstituted phenyl, biphenyl, dibenzofuranyl and dibenzothienyl, wherein the substituent is one or more of deuterium, phenyl and biphenyl.
  6. 6. The compound of claim 1, wherein the compound is any one of the following: 。
  7. 7. An organic electroluminescent device comprising a first electrode, a second electrode, and an organic layer formed between the first electrode and the second electrode; the organic layer comprises a hole injection layer, a first hole transport layer, a second hole transport layer, a light emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer, wherein at least one layer of the hole injection layer, the first hole transport layer, the second hole transport layer, the light emitting layer, the hole blocking layer, the electron transport layer and the electron injection layer contains the compound according to any one of claims 1 to 6.
  8. 8. The organic electroluminescent device according to claim 7, wherein the light-emitting layer comprises a light-emitting host material, the light-emitting host material is formed by mixing any one or more of the following P-Type compounds with the compounds according to any one of claims 1 to 6, and the P-Type compounds are as follows: 。
  9. 9. An electronic display device comprising the organic electroluminescent device as claimed in claim 7.
  10. 10. An OLED lighting device comprising the organic electroluminescent device as claimed in claim 7.

Description

Compound containing triazine structure and organic electroluminescent device Technical Field The invention relates to the technical field of organic electroluminescence, in particular to a compound containing a triazine structure and an organic electroluminescent device. Background An Organic Light-EMITTING DEVICES (OLED) is an spontaneous Light-emitting device using the principle that a fluorescent substance emits Light by recombination of holes injected from a positive electrode and electrons injected from a negative electrode when an electric field is applied. The self-luminous device has the characteristics of low voltage, high brightness, wide viewing angle, quick response, good temperature adaptability and the like, is ultrathin, can be manufactured on a flexible panel and the like, and is widely applied to the fields of mobile phones, tablet computers, televisions, illumination and the like. An OLED is a current-type organic light emitting device, which is a phenomenon of emitting light by injection and recombination of carriers, and the intensity of the light emission is proportional to the current injected. Under the action of an electric field, holes generated by the anode and electrons generated by the cathode of the OLED move, are respectively injected into the hole transport layer and the electron transport layer, and migrate to the light emitting layer. When the two meet at the light emitting layer, an energy exciton is generated, thereby exciting the light emitting molecule to finally generate visible light. Currently, an OLED device is formed by a substrate, a cathode, an anode, a Hole Injection Layer (HIL), an Electron Injection Layer (EIL), a Hole Transport Layer (HTL), an Electron Transport Layer (ETL), an Electron Blocking Layer (EBL), a Hole Blocking Layer (HBL), an emission layer (EML), and the like, and when a voltage is applied to the electrodes at both ends of the OLED device, positive and negative charges are generated in the organic layer functional material film layer by an electric field, and the positive and negative charges are further recombined in the emission layer, so that light can be generated. The visual field of the OLED is wide, which can reach about 170 degrees, and the LCD blocks light during operation, so that natural observation barriers exist at certain angles, and the OLED can emit light, so that the visual field is also wide. In view of the actual demands of the current organic electroluminescent industry, the development of the current organic electroluminescent materials is far insufficient, and far falls behind the requirements of panel manufacturing enterprises. Disclosure of Invention The invention aims to provide a compound containing a triazine structure and an organic electroluminescent device based on the prior art. The technical scheme of the invention is as follows: A compound containing a triazine structure has a chemical structural formula shown in a formula 1: Wherein, the X is S or O; L 1 and L 2 are each independently a single bond, a substituted or unsubstituted C6-C20 arylene group, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C6-C30 aryl, C6-C30 deuterated aryl, C5-C30 heteroaryl; Ar 1 and Ar 2 are substituted or unsubstituted aryl of C6-C30 or heteroaryl of C5-C30, the substituents of which are selected from one or more of deuterium, fluorine, cyano, alkyl of C1-C10, deuterated alkyl of C1-C10, aryl of C6-C30, deuterated aryl of C6-C30, heteroaryl of C5-C30; r 1-R2 is each independently hydrogen, deuterium, fluorine, cyano, C1-C10 alkyl, C1-C10 deuterated alkyl, C6-C20 aryl or C6-C20 deuterated aryl, N and m are positive integers of 0-4. Preferably, the structural formula of the compound of the present invention is shown in the following formula 2: Wherein, the X is S or O; L 1 and L 2 are each independently a single bond or a substituted or unsubstituted phenyl, naphthyl, biphenyl group, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C6-C30 aryl, C6-C30 deuterated aryl, C5-C30 heteroaryl; Ar 1 and Ar 2 are substituted or unsubstituted aryl of C6-C18 or heteroaryl of C5-C24, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C1-C6 alkyl, C1-C6 deuterated alkyl, C6-C18 aryl, C6-C18 deuterated aryl, C5-C24 heteroaryl. In a preferred embodiment of the invention, L 1 and L 2 are each independently a single bond, a substituted or unsubstituted C6-C20 arylene group, the substituents of which are selected from one or more of deuterium, fluorine, cyano, C6-C30 aryl; Preferably, L 1 and L 2 are each independently a single bond or a substituted or unsubstituted phenyl, naphthyl, biphenyl group, the substituents of which are selected from one or more of deuterium, fluorine, cyano; Further preferred, L 1 and L 2 are each independently a single bond, a substituted or unsubstituted phenyl or biphenyl group. In a preferred embodiment Ar 1 a