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A kind of preparation method of blue light doping material

A technology of doping materials and blue light, applied in the field of preparation of blue light doping materials, can solve the problems of high price of phosphorescent materials, unstable blue light materials, attenuation of device efficiency, etc., so as to improve carrier mobility and luminous efficiency, improve Photoelectric characteristics, the effect of reducing the driving voltage

Active Publication Date: 2018-03-30
VALIANT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But phosphorescent materials are expensive and blue light materials are unstable
Factors such as serious attenuation of device efficiency still fail to meet people's needs

Method used

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  • A kind of preparation method of blue light doping material
  • A kind of preparation method of blue light doping material
  • A kind of preparation method of blue light doping material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Example 1: Preparation of the aforementioned material 1

[0077] (1) Preparation of Intermediate A

[0078] Weigh in turn 179g (1mol) 5-chloro-8-hydroxyquinoline, 734.8g (2.5mol) methyl 2,6-dibromobenzoate, 2000g N,N-dimethylformamide, 552g (4mol) carbonic acid Potassium was placed in a 5L three-necked flask, stirred at 100°C for 12 hours, 1500g of water and 1000g of ethyl acetate were added to the reaction system, and the liquids were separated. : 1 passed through the column to prepare 300.6 g of Intermediate A, the yield was 76.6%, and the product purity was GC: 99.5%.

[0079]

[0080] (2) Preparation of Intermediate B and Intermediate C

[0081] Weigh 196.3 g (0.5 mol) of compound A, 80 g (2 mol) of sodium hydroxide, and 1000 g of absolute ethanol in turn, and under nitrogen protection, reflux for 4 h, remove the organic solvent, and add 1000 g of dilute 10% by mass to the system. Hydrochloric acid, the system produces a large amount of white solid, which is f...

Embodiment 2

[0095] Example 2: Preparation of the aforementioned material 2

[0096] The same preparation method and raw material ratio as in the preparation of material 1 in Example 1 were adopted, except that 2-bromobiphenyl was replaced with 2-bromodiphenyl ether in step (3), and the rest remained unchanged. The final obtained material 2 was detected by high performance liquid chromatography (HPLC for short), and it was found that the purity of material 2 was 99.6%, and the high resolution mass spectrometry showed that the theoretical value [M+1] was 734.2729, and the test value was 734.2726.

Embodiment 3

[0097] Example 3: Preparation of the aforementioned material 3

[0098] The same preparation method and raw material ratio as in the preparation of material 1 in Example 1 were adopted, except that 2-bromobiphenyl was replaced with 2-bromodiphenyl sulfide in step (3), and the rest remained unchanged. The final obtained material 3 was detected by high performance liquid chromatography (HPLC for short) and found that the purity of material 3 was 99.6%, and by high-resolution mass spectrometry, the theoretical value [M+1] was 750.2501, and the test value was 750.2506.

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Abstract

The invention discloses a preparation method of a blue-light doped material, which belongs to the technical field of organic photoelectric materials. It has the molecular structure shown in Formula 1: wherein, X is oxygen or sulfur or does not exist; Ar1 ​​and Ar2 are respectively an aryl group with 6-20 carbon atoms, a fused-ring aromatic hydrocarbon group with 10-20 carbon atoms, and an aromatic hydrocarbon group containing At least one of a nitrogen atom, an oxygen atom and a sulfur atom, and one of aromatic heterocyclic groups having 4-20 carbon atoms. The blue-light doped material of the present invention, that is, the compound shown in formula 1, has improved the carrier mobility and luminous efficiency of the blue-light doped material due to the introduction of a spiro group and a triarylamine structure, and greatly improved its Photoelectric properties. In addition, because the xanthene group is the mother nucleus, the compound has good luminescence performance, high luminescence performance, good film-forming property, and good stability at room temperature.

Description

technical field [0001] The invention relates to a preparation method of a blue light doped material, belonging to the technical field of organic optoelectronic materials. Background technique [0002] Since Dr. Deng Qingyun of Kodak reported electroluminescent diodes based on organic materials in 1987, hundreds of high-efficiency organic light-emitting materials have been developed in the past three decades, and the development of organic electroluminescent diodes is also due to different materials. It can be divided into fluorescent OLED and phosphorescent OLED. The first-generation OLEDs mainly use traditional fluorescent materials and have good device stability. However, since traditional fluorescent materials can only use singlet excitons to emit light, their internal quantum efficiency can only reach 25%. In order to make full use of triplet excitons, in 1998, Professor Forrest of Princeton University developed the second-generation OLED material—phosphorescent materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D491/052C07D491/153C07D513/14C09K11/06H01L51/54
CPCC09K11/06C07D491/052C07D491/153C07D513/14C09K2211/1029C09K2211/1007C09K2211/1014C09K2211/1088C09K2211/1092H10K85/657H10K50/11
Inventor 刘英瑞石宇林存生高自良李明姜春晓
Owner VALIANT CO LTD