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Organic electroluminescence material and preparation method and application thereof

An electroluminescent material and electroluminescent technology, which are applied in the fields of luminescent materials, organic chemistry, chemical instruments and methods, etc., can solve the problems of increased device manufacturing cost, and achieve the advantages of simple preparation method, improved luminous efficiency, and excellent electron transport ability. Effect

Inactive Publication Date: 2017-05-31
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to balance the carrier injection rate and improve the luminous efficiency of the device, an electron transport layer composed of an electron transport material and a hole transport layer composed of a hole transport material are usually introduced into the light emitting device, but the electron and hole transport The introduction of layers often leads to an increase in the cost of device fabrication

Method used

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  • Organic electroluminescence material and preparation method and application thereof
  • Organic electroluminescence material and preparation method and application thereof
  • Organic electroluminescence material and preparation method and application thereof

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preparation example Construction

[0039] The present invention also provides a method for preparing an organic electroluminescence material, comprising:

[0040] Under the protection of argon, the compound shown in Formula A is subjected to a coupling reaction to obtain the organic electroluminescent material of the present invention:

[0041]

[0042] The selection of the R group is the same as above, and will not be repeated here.

[0043] According to the intermediate A of the present invention, it is prepared according to the following method:

[0044] (1) Take 100mmol iii and add iv 50mmol, 2M K 2 CO 3 Solution 150ml, solvent THF 600ml, tetrakistriphenylphosphopalladium 1mmol, Ar gas replacement three times, reflux reaction for 6h, to obtain the product.

[0045] (2) Take 40mmol of the product from the previous step and add v 40mmol, 2M K 2 CO 3 Solution 60ml, solvent THF 300ml, tetrakistriphenylphosphopalladium 0.4mmol, Ar gas replacement three times, reflux reaction for 6h, to obtain the product...

Embodiment 1

[0057] Embodiment 1: the preparation of intermediate A

[0058] (1) Take 100mmol iii and add iv 50mmol, 2M K 2 CO 3 Solution 150ml, solvent THF 600ml, tetrakistriphenylphosphopalladium 1mmol, Ar gas replacement three times, reflux reaction for 6h, and recrystallization to obtain 42mmol of the product.

[0059] (2) Take 40mmol of the product from the previous step and add v 40mmol, 2M K 2 CO 3 Solution 60ml, solvent THF 300ml, tetrakistriphenylphosphopalladium 0.4mmol, Ar gas replacement three times, reflux reaction for 6h, to obtain the product 31mmol.

[0060] (3) Take 30 mmol of the product from the previous step, add 150 mmol of triethyl phosphite, 100 ml of o-dichlorobenzene as a solvent, and react under reflux for 24 hours to obtain 21 mmol of product vi.

[0061] (4) Take 20mmol of the product vi from the previous step, add 18mmol of NBS, and 100ml of dichloromethane as a solvent, and react at room temperature for 10h to obtain 14mmol of product i.

[0062] (5) Take...

Embodiment 2

[0066] Embodiment 2: the synthesis of compound M1:

[0067]

[0068] Take 10mmol of intermediate A, add 10mmol of iodoethane, solvent toluene, potassium tert-butoxide 30mmol, Pd2(dba) 30.2mmol, replace with Ar gas three times, add 0.8mmol of tri-tert-butylphosphine, and replace with Ar again three times. The temperature was raised to reflux for 8h. The crude product was passed through a silica gel column to obtain 7 mmol of the product with a yield of 85%. Mass Spectrum m / z: 553.18 (calculated: 553.17). Theoretical element content (%)C 35 h 24 f 5 N: C, 75.94; H, 4.37; F, 17.16; N, 2.53; Measured element content (%): C, 75.84; H, 4.47; F, 17.08; N, 2.61. The above results confirmed that the obtained product was the target product.

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Abstract

The invention provides an organic electroluminescence material and a preparation method and application thereof, and belongs to the technical field of the organic photoelectric material. The material is capable of using a carbazole radical group as the center, and connected with a dimethyl fluorene radical and a pentafluorophenyl. The material has the excellent electronic transmission capability and cavity transport capability, and the luminous efficiency is greatly improved, so the material can be used for preparing an organic electroluminescence device, and specifically used as the main material of the luminescent layer in the organic electroluminescence device. Compared with the current OLED device, the organic electroluminescence device has good performance. The invention further provides the preparation method for the organic electroluminescence material. The preparation method is simple, and suitable for the industrial production.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to an organic electroluminescent material and its preparation method and application. Background technique [0002] Organic Light Emitting Diode (OLED) is a current-driven light-emitting device that uses organic materials as active materials. Specifically, organic semiconductor materials and organic light-emitting materials are driven by electric fields through carrier injection and Composite technology that leads to luminescence. The research on the phenomenon of organic electroluminescence began in the 1960s. In 1963, Pope et al. of New York University in the United States first observed electroluminescence on anthracene single crystals, but due to the excessive thickness of the single crystal, the driving voltage was as high as 400V, which lacked practical value. Subsequent studies have reported a series of electroluminescence phenomena of host organic m...

Claims

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Application Information

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IPC IPC(8): C07D209/86C07D401/04C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D209/86C07D401/04C09K2211/1029H10K85/6572H10K50/11
Inventor 赵倩郭建华
Owner CHANGCHUN HYPERIONS TECH CO LTD
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