Blue fluorescence doped material with high efficiency and long service life, application thereof and organic electroluminescent device

A technology of blue fluorescence and doping materials, applied in the field of organic electroluminescence, can solve the problems of poor electronic orbital energy level matching, reduced material working stability, difficulty in light-emitting devices, etc. Stable performance and improved luminous efficiency

Active Publication Date: 2021-03-05
NANJING TOPTO MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the wide energy gap of the blue light material, the matching between the energy level of its electron orbit and the energy level of the carrier injection / transport material is poor, and the high energy level of the excited state will also reduce the working stability of the material, making the development of high-performance It is very difficult to luminescent device with blue light material

Method used

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  • Blue fluorescence doped material with high efficiency and long service life, application thereof and organic electroluminescent device
  • Blue fluorescence doped material with high efficiency and long service life, application thereof and organic electroluminescent device
  • Blue fluorescence doped material with high efficiency and long service life, application thereof and organic electroluminescent device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]

[0042] The preparation method of the blue fluorescent doped material (1) is as follows:

[0043]

[0044]Under nitrogen protection, compound 1-a (1.0g, 172.11g / mol, 5.81mmol), compound 1-b (1eq, 2.35g, 404.99g / mol, 5.81mmol), sodium tert-butoxide (1.1eq, 0.61 g, 96.1g / mol, 6.39mmol), tris(dibenzylideneacetone)dipalladium (0.05eq, 0.27g, 915g / mol, 0.29mmol), tri-tert-butylphosphine (0.05eq, 0.059g, 202.32g / mol, 0.29mol), toluene (10ml) were added in the reaction flask, and after the addition was completed, the temperature was raised to reflux for 5 hours. The organic phase was obtained by liquid separation, and the organic phase was dried with anhydrous magnesium sulfate and then spin-dried, and purified by column chromatography to obtain compound 1-c (2.03g, yield 70.4%), MS (EI): 497 (M + ).

[0045]

[0046] Under nitrogen protection, compound 1-c (1.8g, 497.17g / mol, 3.62mmol) was added into tert-butylbenzene (18ml), stirred and cooled to -40°C, and the ...

Embodiment 2

[0048]

[0049] The preparation method of the blue fluorescent doped material (6) is as follows:

[0050]

[0051] Under nitrogen protection, compound 2-a (1.0g, 169.09g / mol, 5.91mmol), compound 2-b (1eq, 2.4g, 404.99g / mol, 5.91mmol), sodium tert-butoxide (1.1eq, 0.62 g, 96.1g / mol, 6.5mmol), tris(dibenzylideneacetone)dipalladium (0.05eq, 0.27g, 915g / mol, 0.3mmol), tri-tert-butylphosphine (0.05eq, 0.06g, 202.32g / mol, 0.3mol), toluene (10ml) into the reaction flask, after the addition, the temperature was raised to reflux reaction for 10h, after the reaction was completed, it was lowered to room temperature, then added 10ml of water and stirred for 30min to obtain the filtrate, which was filtered through diatomaceous earth The organic phase was obtained by liquid separation, and the organic phase was dried with anhydrous magnesium sulfate and then spin-dried, and purified by column chromatography to obtain compound 2-c (2.13g, yield 72.8%), MS (EI): 494 (M + ).

[0052]...

Embodiment 3

[0055]

[0056] The preparation method of the blue fluorescent doped material (12) is as follows:

[0057]

[0058] Under nitrogen protection, compound 3-a (1.0g, 253.18g / mol, 3.95mmol), compound 3-b (1eq, 1.6g, 404.99g / mol, 3.95mmol), sodium tert-butoxide (1.1eq, 0.42 g, 96.1g / mol, 4.34mmol), tris(dibenzylideneacetone)dipalladium (0.05eq, 0.18g, 915g / mol, 0.2mmol), tri-tert-butylphosphine (0.05eq, 0.04g, 202.32g / mol, 0.2mol), toluene (10ml) were added in the reaction flask, after the addition was completed, the temperature was raised to reflux for 5 hours, after the reaction was completed, the temperature was lowered to room temperature, and 10ml of water was added and stirred for 15 minutes to obtain the filtrate, which was filtered through diatomaceous earth The organic phase was obtained by liquid separation, and the organic phase was dried with anhydrous magnesium sulfate and then spin-dried, and purified by column chromatography to obtain compound 3-c (1.65g, yiel...

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Abstract

The invention discloses a blue fluorescence doped material with high efficiency and long service life, application thereof and an organic electroluminescent device. The structural general formula of the blue fluorescence doped material is shown in the specification. When the blue fluorescence doped material is applied to the organic electroluminescent device, the light-emitting efficiency is improved to a certain extent under the same current density, the starting voltage of the device is reduced to a certain extent, the power consumption of the device is relatively reduced, and the service life of the device is correspondingly prolonged.

Description

technical field [0001] The technical field of organic electroluminescence of the present invention specifically relates to a high-efficiency, long-life blue fluorescent doped material and its application and an organic electroluminescent device. Background technique [0002] As the next-generation flat-panel display technology, organic light-emitting diodes (OLEDs) have the advantages of active light emission, low driving voltage, fast response speed, wide viewing angle, light and thin devices, and flexible display. wide attention from the world and industry. To realize the full-color display of OLEDs, red, green, and blue primary color light-emitting materials are essential. Among them, the blue light material is particularly important, it can not only provide the necessary blue emission light, but also obtain green light and red light through energy transfer. Moreover, blue light materials are also the key to effectively reducing the energy consumption of full-color OLED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/02C07F7/08C09K11/06H01L51/50H01L51/54
CPCC07F5/02C07F7/0812C09K11/06C09K2211/1014C09K2211/1011C09K2211/1007C09K2211/1029C09K2211/1044C09K2211/1055C09K2211/1088C09K2211/1092H10K85/624H10K85/615H10K85/654H10K85/6576H10K85/657H10K85/6574H10K85/6572H10K85/40H10K50/12Y02E10/549
Inventor 钱超许军
Owner NANJING TOPTO MATERIALS CO LTD
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