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A kind of blue light fluorescent doping compound and its application

A compound and fluorescent technology, applied in the field of blue-light fluorescent doped compounds, can solve the problems of limiting device efficiency and achieve the effects of wide energy gap, low driving voltage, and high fluorescent quantum efficiency

Active Publication Date: 2022-06-17
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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  • A kind of blue light fluorescent doping compound and its application
  • A kind of blue light fluorescent doping compound and its application
  • A kind of blue light fluorescent doping compound and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] A blue light fluorescent doped compound, the structural formula is compound 1, and the preparation method thereof comprises the following steps:

[0091]

[0092] step 1:

[0093]Under nitrogen, reactant A-1 (50 mmol) and potassium carbonate (2.5 mmol) were added to 300 mL of DMAc (dimethylacetamide) solvent, then heated to 160°C and stirred. Tetrakis(triphenylphosphine)palladium (Pd(PPh) was added under reflux 3 ) 4 ) (0.5 mmol), stirred for 1 hour, cooled to room temperature, and the obtained solid was filtered to obtain Intermediate 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), tetrakis(triphenylphosphine) palladium (0.375 mmol) and potassium carbonate (75 mmol) were added to toluene, ethanol, In a mixed solvent of water, the temperature was raised to 100°C and refluxed for 8 hours. After the reaction was completed, the mixture was cooled to room temperature. ...

Embodiment 2

[0102] A blue light fluorescent doped compound, the structural formula is compound 23, and the preparation method thereof comprises the following steps:

[0103]

[0104] step 1:

[0105] Under nitrogen, reactant A-23 (50 mmol) and potassium carbonate (5 mmol) were added to 300 mL of DMAc (dimethylacetamide) solvent, then heated to 160°C and stirred. Tetrakis(triphenylphosphine)palladium (Pd(PPh) was added under reflux 3 ) 4 ) (0.75 mmol), stirred for 1 hour, cooled to room temperature, and the obtained solid was filtered to obtain the 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), tetrakis (triphenylphosphine) palladium (0.6 mmol) and potassium carbonate (85 mmol) were added to toluene, ethanol, In the mixed solvent of water, the temperature was raised to 110 °C and refluxed for 8 h. After the reaction was completed, the mixture w...

Embodiment 3

[0114] A blue light fluorescent doped compound, the structural formula is compound 70, and the preparation method thereof comprises the following steps:

[0115]

[0116] step 1:

[0117] Under nitrogen, reactant A-70 (50 mmol) and potassium carbonate (4 mmol) were added to 300 mL of DMAc (dimethylacetamide) solvent, then heated to 165°C and stirred. Tetrakis(triphenylphosphine)palladium (Pd(PPh) was added under reflux 3 ) 4 ) (1 mmol), stirred for 1 hour, cooled to room temperature, and the obtained solid was filtered to obtain 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), tetrakis(triphenylphosphine) palladium (0.375 mmol) and potassium carbonate (75 mmol) were added to toluene, ethanol and water, respectively. The mixed solvent was heated to 120°C and refluxed for 8 hours. After the reaction was completed, it was cooled to roo...

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Abstract

The invention discloses a blue-light fluorescent doping compound and an application thereof, belonging to the technical field of organic light-emitting materials, wherein the structure of the blue-light fluorescent doping compound is shown in Chemical Formula 1. Simultaneously, the present invention also discloses the application of the blue light fluorescent doping compound in the organic electroluminescent device, comprising a light-emitting layer, the light-emitting layer comprising a host material and a dopant material; the mass ratio of the host material to the dopant material is 90‑99.5:0.5‑10; the dopant material includes a blue light fluorescent doping compound. The compound prepared by the invention is used as a blue-light fluorescent doping material, and its core 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 an organic electroluminescent device, the organic electroluminescent device can have the performance characteristics of long life, low voltage and high efficiency.

Description

technical field [0001] The present invention relates to the technical field of organic light-emitting materials, in particular to a blue-light fluorescent doping compound and its application. Background technique [0002] The 21st century is an era of rapid development of information technology. Various news media and social platforms have become important means for people to acquire, share and disseminate information. As a terminal display for information visualization, whether it is a mobile phone, a computer or a TV, people are increasingly pursuing display devices with excellent performance. With the development of science and technology, the emergence of various wearable electronic devices and portable electronic devices has put forward higher requirements and challenges to display technology. Therefore, there is an urgent need to develop a display device with excellent color rendering effect, light weight, energy saving and high efficiency. [0003] As an emerging f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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