A compound, oled display panel and electronic device

A display panel and compound technology, which is applied in the field of OLED display panels, can solve the problems of device electron and hole mobility imbalance, device efficiency and life decline, and electron transport performance degradation, etc., and achieves low driving voltage and high glass transition temperature. and thermal decomposition temperature, the effect of excellent film stability and uniformity

Active Publication Date: 2021-09-21
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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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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  • A compound, oled display panel and electronic device
  • A compound, oled display panel and electronic device
  • A compound, oled display panel and electronic device

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0128] Preparation of Compound HB03

[0129]

[0130] The preparation method is as follows:

[0131] (1) Preparation of compound HB03-1:

[0132] In a 250 mL round bottom flask, 2,6-dibromo-4-iodo-pyridine (10 mmol), 2,4-diphenyl-6-boronate-pyrimidine (12 mmol) and Pd(PPh 3 )4 (0.3mmol) was added to a mixture of toluene (30mL) / ethanol (20mL) and potassium carbonate (12mmol) aqueous solution (10mL), and refluxed under nitrogen atmosphere for 12h. The resulting mixture was cooled to room temperature, added to water, and filtered through a pad of celite. The filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude product was purified by silica gel column chromatography The final product HB03-1 was obtained.

[0133] (2) Preparation of compound HB03:

[0134] In a 250 mL round bottom flask, the intermediate product HB03-1, copper iodide (15 mmol), potassium tert-butoxide (65 mmol...

preparation example 2

[0137] Preparation of compound HB11

[0138]

[0139] The preparation method is as follows:

[0140] (1) Preparation of compound HB11-1:

[0141] In a 250 mL round bottom flask, 2,6-dibromo-4-iodo-benzene (10 mmol), 2,6-dinaphthyl-4-boronate-pyridine (12 mmol) and Pd(PPh 3 ) 4 (0.3mmol) was added to a mixture of toluene (30mL) / ethanol (20mL) and potassium carbonate (12mmol) aqueous solution (10mL), and the reaction was refluxed under nitrogen atmosphere for 12h. The resulting mixture was cooled to room temperature, added to water, and filtered through a pad of celite. The filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude product was purified by silica gel column chromatography The final product HB11-1 was obtained.

[0142] (2) Preparation of compound HB11:

[0143] In a 250 mL round bottom flask, the intermediate product HB11-1, copper iodide (15 mmol), potassium tert...

preparation example 3

[0146] Preparation of compound HB35

[0147]

[0148] The preparation method is as follows:

[0149] (1) Preparation of compound HB35-1:

[0150] In a 250 mL round bottom flask, 2,6-dibromo-4-iodo-benzene (10 mmol), 2,6-diphenyl-4-boronate-pyridine (12 mmol) and Pd(PPh 3 ) 4 (0.3mmol) was added to a mixture of toluene (30mL) / ethanol (20mL) and potassium carbonate (12mmol) aqueous solution (10mL), and the reaction was refluxed under nitrogen atmosphere for 12h. The resulting mixture was cooled to room temperature, added to water, and filtered through a pad of celite. The filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude product was purified by silica gel column chromatography The final product HB35-1 was obtained.

[0151] (2) Preparation of compound HB35:

[0152] In a 250 mL round bottom flask, the intermediate product HB35-1 (10 mmol), 2-(4-boronate) benzene-carbazol...

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Abstract

The invention provides a compound, an OLED display panel and electronic equipment, the compound has a structure of formula (I); the OLED display panel includes a first electrode, a second electrode and an electrode arranged on the first electrode and the second electrode An organic thin film layer between, the organic thin film layer includes an electron transport layer, and the electron transport layer includes any one or a combination of at least two of the compounds; the electronic device includes the OLED display panel; The triplet energy level E of luminescent materials T ≥2.7eV, HOMO energy level ≤‑5.85eV, glass transition temperature>120°C, can be used in OLED display panels, improve luminous efficiency, and make electronic equipment including it have better performance.

Description

technical field [0001] The invention relates to the technical field of OLED display panels, in particular to a compound, an OLED display panel and electronic equipment. Background technique [0002] With the commercialization and practical application of electroluminescent devices, people hope to obtain electron transport materials with higher transmission efficiency and better performance. Researchers have done some exploratory work in this field. The electron transport material used in traditional electroluminescent devices is tris(8-hydroxyquinoline)aluminum (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] E...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D401/14C07D403/10C07D401/10C07D403/14C07D413/14C07D417/14C09K11/06H01L51/50H01L51/54
CPCC07D401/14C07D403/10C07D401/10C07D403/14C07D413/14C07D417/14C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1059H10K85/615H10K85/626H10K85/657H10K85/6572H10K50/11H10K50/171H10K50/16C07D239/26C07D213/38H10K85/636H10K85/654H10K85/324H10K85/342H10K2101/10H10K2102/103
Inventor 张磊高威牛晶华代文朋卢艳李杨刘营
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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