Compound, display panel and display device

A compound and connection position technology, which is applied in the field of organic electroluminescent materials, can solve the problems of device electron and hole mobility imbalance, device efficiency and life reduction, electron transport performance reduction, etc., to achieve improved ability and high electron transfer efficiency, excellent film stability

Inactive Publication Date: 2019-08-20
SHANGHAI TIANMA AM OLED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the electron transport material is crystallized, the intermolecular charge transition mechanism will be different from the normal operation of the amorphous film mechanism, resulting in a decrease in the performance of electron transport, resulting in an imbalance in the mobility of electrons and holes in the entire device, and the formation of excitons. The efficiency is greatly reduced, and the formation of excitons will be concentrated at the interface between the electron transport layer and the light-emitting layer, resulting in a serious decrease in device efficiency and lifetime

Method used

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  • Compound, display panel and display device
  • Compound, display panel and display device
  • Compound, display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Synthesis of compound ET01

[0118]

[0119] Nitrogen was passed into a 250mL three-necked flask, 1-bromo-3,5-diiodobenzene (10mmol), 4-phenyl-2-boronic acid ester-quinazoline (10mmol) and Na 2 CO 3 were added to toluene / EtOH / H 2 O (75 / 25 / 50mL) solvent, forming a mixed solution, Pd (PPh 3 ) 4 (0.48mmol) was added to the above mixed solution, and the reaction was refluxed under nitrogen atmosphere for 20h. The mixture was then cooled to room temperature and extracted with ethyl acetate. The aqueous layer was further extracted with dichloromethane, and the combined organic layers were washed with brine, MgSO 4 After drying, filtering and concentrating, the residue was recrystallized from dichloromethane and methanol to obtain the product ET01-1;

[0120] Nitrogen was passed into a 250mL three-necked flask, and the intermediate ET01-1 (10mmol), 3-boronate-dibenzofuran (20mmol) and Na 2 CO 3 were added to toluene / EtOH / H 2 O (75 / 25 / 50mL) solvent, forming a mixed ...

Embodiment 2

[0123] Synthesis of Compound ET02

[0124]

[0125] Nitrogen was passed into a 250mL three-necked flask, 1-bromo-4-iodobenzene (10mmol), 4-phenyl-2-boronate-quinazoline (10mmol) and Na 2 CO 3were added to toluene / EtOH / H 2 O (75 / 25 / 50mL) solvent, forming a mixed solution, Pd (PPh 3 ) 4 (0.48mmol) was added to the above mixed solution, and the reaction was refluxed under nitrogen atmosphere for 20h. The mixture was then cooled to room temperature and extracted with ethyl acetate, the aqueous layer was further extracted with dichloromethane, the combined organic layers were washed with brine, MgSO 4 Dry, filter and concentrate. The residue was recrystallized from dichloromethane and methanol to obtain the product ET02-1;

[0126] Nitrogen was passed into a 250mL three-necked flask, and the intermediate ET02-1 (10mmol), 1-boronate-dibenzofuran (10mmol) and Na 2 CO 3 were added to toluene / EtOH / H 2 O (75 / 25 / 50mL) solvent, forming a mixed solution, Pd (PPh 3 ) 4 (0.48mm...

Embodiment 3

[0129] Synthesis of compound ET03

[0130]

[0131] Nitrogen was passed into a 250mL three-necked flask, 4'-bromo-3,5-diiodo-1,1'-biphenyl (10mmol), 4-phenyl-2-boronic acid ester-quinazoline (10mmol) and Na 2 CO 3 were added to toluene / EtOH / H 2 O (75 / 25 / 50mL) solvent, forming a mixed solution, Pd (PPh 3 ) 4 (0.48mmol) was added to the above mixed solution, and the reaction was refluxed under nitrogen atmosphere for 20h. The mixture was then cooled to room temperature and extracted with ethyl acetate, the aqueous layer was further extracted with dichloromethane, the combined organic layers were washed with brine, MgSO 4 Dry, filter and concentrate. The residue was recrystallized from dichloromethane and methanol to give the product ET03-1;

[0132] Nitrogen was passed into a 250mL three-necked flask, and the intermediate ET03-1 (10mmol), 3-boronate-dibenzofuran (20mmol) and Na 2 CO 3 were added to toluene / EtOH / H 2 O (75 / 25 / 50mL) solvent, forming a mixed solution, P...

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Abstract

The present invention discloses a compound. The structure of the compound is represented by general formula I (A)m-L1-(B)n, wherein L1 is selected from substituted or unsubstituted C4-C40 aryl or heteroaryl groups; A has a structural formula shown in the description, B has a structural formula shown in the description, and * represents the linkage position. All substituent groups in the formulas are as defined in the description. The compound has a suitable HOMO value and a low LUMO value as an electron transporting material including quinolinzole and an electron-donating group, and can improve the electron transporting ability and effectively block holes.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescent materials, in particular to a compound containing an aromatic heterocycle and an electron-donating group, a display panel and a display device containing the compound. Background technique [0002] The electron transport material used in traditional electroluminescent devices is Alq3, but the electron mobility of Alq3 is relatively low (about l0 -6 cm 2 / Vs), which makes the electron transport and hole transport of the device unbalanced. With the commercialization and practical application of electroluminescent devices, people hope to obtain ETL materials with higher transmission efficiency and better performance. In this field, researchers have done a lot of exploratory work. [0003] Electron transport materials such as batho-phenanthroline (BPhen), bathocuproine (BCP) and TmPyPB, which are widely used in the market, can generally meet the market demand of organic electrolum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D405/14C07D409/14C07D409/10C07D413/10C07D417/10C07D411/10C07D407/10C07D407/14C09K11/06G09F9/30
CPCC07D405/14C07D407/10C07D407/14C07D409/10C07D409/14C07D411/10C07D413/10C07D417/10C09K11/06C09K2211/1007C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1088C09K2211/1092G09F9/30
Inventor 张磊高威代文朋牛晶华
Owner SHANGHAI TIANMA AM OLED
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