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Phosphorescence main body compound containing indole groups and organic electroluminescent device of phosphorescence main body compound

A technology of phosphorescent host and indole group, applied in the field of phosphorescent host compounds and organic electroluminescent devices, can solve the problems of unbalanced charge in the light-emitting layer, reduced device efficiency, difficult electron flow, etc., and achieves high light-emitting purity, good The effect of thermal stability and high luminous efficiency

Active Publication Date: 2016-05-25
SHANGHIA TAOE CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of CBP that holes are easy to transport and electrons are difficult to flow, the charge in the light-emitting layer is unbalanced, which reduces the efficiency of the device.

Method used

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  • Phosphorescence main body compound containing indole groups and organic electroluminescent device of phosphorescence main body compound
  • Phosphorescence main body compound containing indole groups and organic electroluminescent device of phosphorescence main body compound
  • Phosphorescence main body compound containing indole groups and organic electroluminescent device of phosphorescence main body compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Synthesis of compound 2

[0051]

[0052] Synthesis of Intermediate 2-1

[0053] In a 500mL single-neck flask, add 5-bromoindole (20.00g, 0.1mol), pinacol diborate (51.80g, 0.2mmol), potassium acetate (22.80g, 0.2mol), [1,1 '-Bis(diphenylphosphino)ferrocene]palladium dichloride (1.50g), 350mL dioxane, reflux for 8h under nitrogen protection. After cooling, the dioxane was removed by rotary evaporation, washed with 200 mL of distilled water, and extracted with dichloromethane three times. The product was recrystallized from methanol-dichloromethane to obtain 21.8 g of the product, and the yield was 90%.

[0054] Synthesis of Intermediate 2-2

[0055] In a 50mL single-necked flask, add Intermediate 2-1 (2.4g, 10mmol), 9-phenyl-9-(4-bromophenyl) fluorene (4.4g, 11mmol), potassium carbonate (2.7g, 20mmol) ), palladium tetrakistriphenylphosphorus (50mg), dioxane (20.0mL) and water (4.0mL), reflux for 5h under nitrogen protection. After cooling, the dioxane was removed by rotary ...

Embodiment 2

[0059] Synthesis of compound 3

[0060]

[0061] The synthesis method is the same as that of compound 2, except that 2-chloro-4,6-diphenyl-s-triazine is used instead of 2-chloro-4,6-diphenylpyrimidine, the yield is 85%.

Embodiment 3

[0063] Synthesis of compound 18

[0064]

[0065] In a three-necked flask, add Intermediate 2-2 (2g, 4.6mmol), 2-(3-bromophenyl)-4,6-diphenyl-1,3,5-triazine (1.8g, 4.6mmol) ), potassium carbonate (1.2g, 9.2mmol), cuprous iodide (0.3g), o-phenanthroline (0.3g) and nitrobenzene (30ml), heated to reflux for 12 hours, cooled, and removed the solvent under reduced pressure. The product was purified by column chromatography to obtain a yield of 2.3 g and a yield of 68%.

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Abstract

The invention provides a phosphorescence main body compound containing indole groups. The compound has better thermal stability, high luminous efficiency and high luminous purity, can be used for manufacturing organic electroluminescent devices, and is applied to the fields of organic solar batteries, organic thin film transistors or organic photoreceptors. The invention also provides an organic electroluminescent device, which comprises an anode, a cathode and an organic layer, wherein the organic layer comprises one layer or more than one layer in a luminous layer, a hole injection layer, a hole transmission layer, a hole blocking layer, an electron injection layer and an electron transmission layer; at least one layer in the organic layer comprises the compound shown as the structural formula I. The structural formula I is shown as the accompanying drawing.

Description

Technical field [0001] The invention relates to the field of organic electroluminescent materials, in particular to a phosphorescent host compound containing an indole group and an organic electroluminescent device thereof, and belongs to the technical field of organic electroluminescent device display. Background technique [0002] Organic electroluminescent devices (OLEDs) are devices prepared by depositing a layer of organic material between two metal electrodes by spin coating or vacuum evaporation. A classic three-layer organic electroluminescent device includes a hole transport layer, Emitting layer and electron transport layer. Holes generated by the anode through the hole transport layer and electrons generated by the cathode through the electron transport layer combine in the light-emitting layer to form excitons, and then emit light. The organic electroluminescence device can adjust the emission of various required light by changing the material of the light-emitting l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D401/04C07D403/04C07D401/10C07D403/10C09K11/06H01L51/54
CPCC09K11/06C07D401/04C07D401/10C07D403/04C07D403/10C09K2211/1029C09K2211/1059C09K2211/1044H10K85/615H10K85/654H10K85/6572Y02E10/549
Inventor 黄锦海苏建华
Owner SHANGHIA TAOE CHEM TECH CO LTD
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