Fluorene-containing triarylamine compound as well as application and light-emitting device thereof

A technology of triaromatic amines and compounds, applied in the field of organic electroluminescent materials, can solve the problems of high preparation energy consumption, affect device efficiency, poor thermal stability, etc., and achieve high luminous purity, high luminous efficiency, and good thermal stability. Effect

Inactive Publication Date: 2018-10-16
SHANGHIA TAOE CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional hole injection materials, such as copperphthalocyanine (CuPc), are slow to degrade, consume high energy for preparation, are not conducive to environmental protection, and they absorb light, which affects the efficiency of devices
The original hole transport materials such as NPB have poor thermal stability, which also greatly affects the life of the device.

Method used

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  • Fluorene-containing triarylamine compound as well as application and light-emitting device thereof
  • Fluorene-containing triarylamine compound as well as application and light-emitting device thereof
  • Fluorene-containing triarylamine compound as well as application and light-emitting device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Synthetic route of compound 3

[0049]

[0050] The synthetic method of intermediate 3-1

[0051] In the flask, add 2,4-diphenylphenylboronic acid (25g, 91mmol), o-bromoiodobenzene (25.6g, 91mmol), potassium carbonate (25g, 182mmol), tetrakistriphenylphosphine palladium (0.5g), Tetrahydrofuran (250 mL) and water (100 mL) were heated to reflux for 12 hours under the protection of nitrogen, cooled, extracted with dichloromethane, dried, concentrated, and the crude product was purified by column chromatography to obtain 18.9 g of product with a yield of 54%.

[0052] The synthetic method of intermediate 3-2

[0053] In the flask, add intermediate 3-1 (15g, 39mmol), anhydrous tetrahydrofuran (150mL), cool to -78 degrees under nitrogen protection, slowly add 2.5M n-butyllithium solution (15.6mL, 39mmol), Stir for 2 hours, then slowly add this solution to a tetrahydrofuran solution dissolved in 2-bromofluorenone (10g, 39mmol), react for 5 hours, then slowly add 1N dilute...

Embodiment 21-40

[0065] Fabrication of Organic Electroluminescent Devices

[0066] Preparation of OLEDs using the compounds of the Examples

[0067] First, the transparent conductive ITO glass substrate 110 (with anode 120 on it) (China CSG Group Co., Ltd.) was washed in sequence with deionized water, ethanol, acetone and deionized water, and then treated with oxygen plasma for 30 seconds.

[0068] Then, PEDOT:PSS (polyethylenedioxythiophene-poly(styrene sulfonate)) with a thickness of 45 nm was spin-coated on the ITO as the hole injection layer 130, and dried at 150° C. for 30 minutes.

[0069] Then, the compound of the present invention was vapor-deposited as the hole transport material 140 on the hole injection layer to a thickness of 40 nm.

[0070] Then, a luminescent layer 150 with a thickness of 30nm is evaporated on the electron blocking layer, wherein CBP is the host luminescent material, and the weight ratio is 8% of Ir(ppy) 3 As a phosphorescent doping guest material.

[0071] Th...

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Abstract

The invention provides a fluorene-containing triarylamine compound. The fluorene-containing triarylamine compound has the following structural formula: (as described in the specification); and the compound has good thermal stability, high luminous efficiency and high luminous purity, and can be applied to the fields of organic electroluminescent devices, solar cells, organic thin film transistorsor organic photoreceptors. The organic electroluminescent devices made of the fluorene-containing triarylamine compound have the advantages of good electroluminescent efficiency, excellent color purity and long service life.

Description

technical field [0001] The invention relates to the field of organic electroluminescent materials, in particular to a fluorene-containing triarylamine compound and its application, and also to a light-emitting device. Background technique [0002] Organic electroluminescent devices (OLEDs) are devices prepared by depositing a layer of organic materials between two metal electrodes by spin coating or vacuum evaporation. A classic three-layer organic electroluminescent device includes a hole transport layer, emissive layer and electron transport layer. The holes generated by the anode are combined with the electrons generated by the cathode through the hole transport layer to form excitons in the light emitting layer through the hole transport layer, and then emit light. Organic electroluminescent devices can be adjusted to emit various required lights by changing the material of the light-emitting layer as required. [0003] As a new type of display technology, organic elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/61C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07C211/61C09K2211/1014C09K2211/1007C09K2211/1011H10K85/615H10K85/624H10K85/633H10K50/11H10K50/15H10K50/16H10K50/17H10K50/18Y02E10/549
Inventor 黄锦海苏建华
Owner SHANGHIA TAOE CHEM TECH CO LTD
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