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Blue fluorescent doped compound and application thereof

A compound and fluorescence technology, which is applied in the field of blue light fluorescent doping compounds, can solve the problems of limiting device efficiency and achieve the effects of wide energy gap, low driving voltage, improved glass transition temperature and luminous efficiency

Active Publication Date: 2021-11-05
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of spin prohibition, fluorescent materials can only use 25% of the singlet excitons to emit light, which limits the efficiency of the device

Method used

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  • Blue fluorescent doped compound and application thereof
  • Blue fluorescent doped compound and application thereof
  • Blue fluorescent doped compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] A blue-ray fluorescent doping compound, a structural formula, a preparation method thereof, comprising the steps of:

[0091]

[0092] step 1:

[0093]Under nitrogen protection, the reactants A-1 (50 mmol) and potassium carbonate (2.5 mmol) were added to 300 mL of DMAC (dimethylacetamide) solvent, and then heated to 160 ° C and stirred. Add four (triphenylphosphine) palladium (PD (PPH) under reflux 3 ) 4 (0.5 mmol), stirred for 1 hour, cooled to room temperature, and filtered the obtained solids B-1 (28.1 g, MS: 654.61, yield: 87%).

[0094] Step 2:

[0095] Under nitrogen protection, intermediate B-1 (37.5 mmol), reactant C-1 (41.25 mmol), tetra (triphenylphosphine) palladium (0.375 mmol) and potassium carbonate (75 mmol) were added to toluene, ethanol, respectively. In the mixed solvent of the water, the temperature rising to 100 ° C refluxing for 8 h, after the reaction, cooled to room temperature, after the solid was precipitated, washed with water, washed with water,...

Embodiment 2

[0102] A blue-ray fluorescent doping compound, a structural formula, a compound 23, wherein the preparation method thereof comprises the steps of:

[0103]

[0104] step 1:

[0105] Under nitrogen protection, the reactants A-23 (50 mmol) and potassium carbonate (5 mmol) were added to 300 mL of DMAC (dimethylacetamide) solvent, and then heated to 160 ° C and stirring. Add four (triphenylphosphine) palladium (PD (PPH) under reflux 3 ) 4 (0.75 mmol), stirred for 1 hour, cooled to room temperature, the obtained solid was filtered to obtain a compound represented by intermediate B-23 (21.5 g, MS: 500.09, yield: 86%).

[0106] Step 2:

[0107] Under nitrogen protection, intermediate B-23 (37.5 mmol), reactant C-23 (48.75 mmol), tetra (triphenylphosphine) palladium (0.6 mmol) and potassium carbonate (85 mmol) were added to toluene, ethanol, respectively. In the mixed solvent of the water, the temperature is warmed to 110 ° C for 8 h, after the reaction, cool to room temperature, after ...

Embodiment 3

[0114] A blue-ray fluorescent doping compound, a structural formula is a compound 70, wherein the preparation method thereof comprises the steps of:

[0115]

[0116] step 1:

[0117] Under nitrogen protection, the reactants A-70 (50 mmol) and potassium carbonate (4 mmol) were added to 300 mL of DMAC (dimethylacetamide) solvent, and then heated to 165 ° C and stirred. Add four (triphenylphosphine) palladium (PD (PPH) under reflux 3 ) 4 (1 mmol), stirred for 1 hour, cooled to room temperature, the obtained solid was filtered to give the compound represented by intermediate B-70 (26.8 g, MS: 654.61, yield: 82%).

[0118] Step 2:

[0119] Under nitrogen protection, intermediate B-70 (37.5 mmol), reactant C-70 (45 mmol), tetra (triphenylphosphine) palladium (0.375 mmol) and potassium carbonate (75 mmol) were added to toluene, ethanol, water, respectively. In the mixed solvent, the temperature was warmed to 120 ° C for 8 h, and after the reaction was completed, it was cooled to room ...

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Abstract

The invention discloses a blue fluorescent doped compound and application thereof, and belongs to the technical field of organic light-emitting materials. The structure of the blue fluorescent doped compound is shown as a chemical formula 1. Meanwhile, the invention also discloses an application of the blue fluorescent doped compound in an organic electroluminescent device. The organic electroluminescent device comprises a luminescent layer, and the luminescent layer comprises a host material and a doping material; the mass ratio of the host material to the doping material is (90-99.5): (0.5-10); and the doping material comprises the blue light fluorescence doped compound. The compound prepared by the invention is used as a blue light fluorescence doped material, and the parent nucleus indolocarbazole has the advantages of high fluorescence quantum efficiency, easy structure modification, wide energy gap and the like. When the blue light fluorescent compound provided by the invention is applied to the organic electroluminescent device, the organic electroluminescent device has the performance characteristics of long service life, low voltage and high efficiency.

Description

Technical field [0001] The present invention relates to the field of organic light-emitting materials, and more particularly to a blue-ray fluorescent doping compound and its application thereof. Background technique [0002] The 21st century is the era of high-speed development in information technology. A variety of news media, social platforms have become an important means of gain, share and disseminate information. Terminal displays as information visualization, whether it is mobile phone, computer or TV, people more and more sought after excellent performance display devices. With the development of technology, all kinds of wearable electronic equipment and portable electronic devices have put forward higher requirements and challenges on display technology. Therefore, there is an urgent need to develop highlighting, thin and energy-efficient display devices. [0003] As an emerging flat-panel display device, OLED has full solid state, high brightness, wide viewing angle, f...

Claims

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Application Information

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IPC IPC(8): C07D487/06C09K11/06H01L51/50H01L51/54C07B59/00
CPCC07D487/06C09K11/06C07B59/002C09K2211/1029C09K2211/1022C07B2200/05H10K85/615H10K85/631H10K85/636H10K85/633H10K85/6572H10K50/11
Inventor 张雪张鹤黄悦马晓宇汪康
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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