Benzo-carbazole compound and organic light-emitting device thereof

An organic light-emitting device, benzocarbazole technology, applied in the field of organic optoelectronic materials to achieve the effect of improving carrier injection balance and improving recombination rate

Inactive Publication Date: 2018-02-16
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the industrialization process of this technology still faces many key problems, and it is necessary to design new materials with better performance for adjustment.

Method used

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  • Benzo-carbazole compound and organic light-emitting device thereof
  • Benzo-carbazole compound and organic light-emitting device thereof
  • Benzo-carbazole compound and organic light-emitting device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Preparation of Compound 1

[0038] Preparation of Intermediate 1-A:

[0039]

[0040] Weigh compound 1-a (30.6g, 251mmol), compound 1-b (103.38g, 251mmol), tetrakistriphenylphosphine palladium (11g, 10mmol) and potassium carbonate (84.2g, 609mmol), and weigh the reaction The substance was dissolved in a solvent of toluene (1L) / EtOH (200mL) / distilled water (200mL), heated at 90°C for 2 hours, several layers were distilled under reduced pressure and then pulverized with methanol. The obtained solid was dissolved in dichloromethane and filtered through silica gel. , Pulverized with dichloromethane and hexane to obtain compound 1-c (72.70, 80%).

[0041] Compound 1-c (13.61g, 37.6mmol) was dissolved in tetrahydrofuran (140mL), hexane solvent and 2.5M n-butyllithium (18mL, 45.1mmol) were added dropwise at -78°C, followed by stirring for 1 hour. After adding trimethyl borate (13 mL, 56.4 mmol) slowly, the mixture was stirred for 2 h. Then 2M hydrochloric acid was added...

Embodiment 2

[0054] Example 2: Preparation of Compound 5

[0055] Preparation of Intermediate 5-B:

[0056]

[0057] The synthesis steps are the same as those of Intermediate 1-B, except that one of the raw materials is replaced with 1-g with 5-g.

[0058] Preparation of compound 5:

[0059]

[0060] The synthesis procedure is the same as that of compound 1, except that the raw materials 1-B and 1-h are replaced with 5-B and 5-h.

Embodiment 4

[0061] Example 4: Preparation of Compound 9

[0062] Preparation of Intermediate 9-A:

[0063]

[0064] The synthesis procedure is the same as that of Intermediate 1-A, except that the raw material 1-a is replaced with 9-a.

[0065] Preparation of Intermediate 9-B:

[0066]

[0067] The synthesis procedure is the same as that of Intermediate 1-B, except that the raw materials 1-A and 1-g are replaced with 9-A and 9-g.

[0068] Preparation of compound 9:

[0069]

[0070] The synthesis procedure is the same as that of compound 1, except that the raw materials 1-B and 1-h are replaced with 9-B and 9-h.

[0071] Example 4: Preparation of Compound 10

[0072] Preparation of Intermediate 10-B:

[0073]

[0074] The synthesis steps are the same as those of Intermediate 1-B, except that one of the raw materials is replaced with 1-g for 10-g.

[0075] Preparation of compound 10:

[0076]

[0077] The synthesis procedure is the same as that of compound 1, except that the raw materials 1-B and 1-h are ...

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PUM

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Abstract

The invention provides a benzo-carbazole compound and an organic light-emitting device thereof, belongs to the technical field of organic light-emitting materials, and solves the problems of low light-emitting efficiency and short service life of a device in the prior art. Carrier injection balance is improved by adjusting groups R1, R2, Ar1 and Ar2 on benzo-carbazole, and the recombination rate of electrons and holes on a light-emitting layer is increased. The organic light-emitting device prepared by the benzo-carbazole compound, particularly a main material serving as the light-emitting layer of the organic light-emitting device has the advantages of higher light-emitting efficiency and obviously prolonged service life, and the organic light-emitting device is superior to an existing common OLED (organic light emitting diode) device.

Description

Technical field [0001] The present invention relates to the technical field of organic photoelectric materials, in particular to a benzocarbazole compound and an organic light emitting device. Background technique [0002] Organic electroluminescence device (OLED) is a new type of flat display device. It has the characteristics of low driving voltage, high luminous efficiency and luminous brightness, long life, light weight, flexibility, and relatively simple manufacturing process, which has caused people Great interest, and is generally considered to be the mainstream of next-generation display devices. The luminescence of organic electroluminescence devices belongs to injection type luminescence. Driven by the forward voltage, the anode injects holes into the light-emitting layer, and the cathode injects electrons into the light-emitting layer. The injected holes and electrons meet in the light-emitting layer and combine to form excitons, which recombine and transfer energy t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/80C07D401/14C07D405/14C07D409/14H01L51/54
CPCC07D209/80C07D401/14C07D405/14C07D409/14H10K85/615H10K85/626H10K85/654H10K85/6576H10K85/6574H10K85/6572
Inventor 蔡辉王雪
Owner CHANGCHUN HYPERIONS TECH CO LTD
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