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Electron transport material containing azaspirobifluorene

A technology of carbon atoms and heteroaryl groups, which is applied in the field of electron transport materials containing nitrogen-containing spirobifluorene, can solve the problems of undisclosed or taught pyrimidine/triazine structural fragments, etc., and achieve the effect of long device life

Pending Publication Date: 2021-02-23
BEIJING SUMMER SPROUT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] where X 1 to X 8 Can be CR or N, Y 1 to Y 3 At least two of them are N; specific examples are: In the compounds disclosed in this application, the pyrimidine / triazine structural fragment must be connected to the nitrogen-free benzene ring in the azaspirofluorene structure, and there is no disclosure or teaching that the pyrimidine / triazine structural fragment must be connected to the nitrogen in the azaspirofluorene structure. The case where hetero benzene rings are connected

Method used

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  • Electron transport material containing azaspirobifluorene
  • Electron transport material containing azaspirobifluorene
  • Electron transport material containing azaspirobifluorene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0153] Embodiment: the synthesis of compound 87

[0154] Step 1: Synthesis of [Intermediate a]

[0155]

[0156] Methyl 2,5-dichloronicotinate (11.8g, 57.3mmol), phenylboronic acid (7.08g, 57.9mmol), bistriphenylphosphine palladium dichloride (2.25g, 3.21mmol), potassium carbonate (16.4 g, 118.7mmol) into a 500mL three-necked round-bottomed flask, and then 225mL of 1,4-dioxane and 50mL of water were added. The reaction flask was heated to reflux at 80°C and stirred for 12 hours under nitrogen atmosphere. After the reaction, the reaction system was cooled to room temperature and extracted with ethyl acetate, and the organic phase was dried and concentrated and separated by column chromatography (petroleum ether: ethyl acetate) to obtain a colorless oil [Intermediate a] (12.3g, 49.7mmol , 86.7%).

[0157] Step 2: Synthesis of [Intermediate b]

[0158]

[0159] Add [Intermediate a] (12.3g, 49.7mmol) into a 250mL three-neck round bottom flask, then add methanol 50mL, sod...

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Abstract

The invention discloses an electron transport material containing azaspirobifluorene. The compound is a compound with an azaspirobifluorene structure, and can be used as an electron transport materialin an electroluminescent device. These novel compounds can provide a longer device lifetime. The invention further discloses an electroluminescent device and a compound formula.

Description

technical field [0001] The present invention relates to compounds for use in organic electronic devices, such as organic light emitting devices. More particularly, it relates to a nitrogen-containing heterospirobifluorene structure compound, an organic electroluminescent device and a compound formulation containing the compound. Background technique [0002] Organic electronic devices include but are not limited to the following categories: organic light-emitting diodes (OLEDs), organic field-effect transistors (O-FETs), organic light-emitting transistors (OLETs), organic photovoltaic devices (OPVs), dye-sensitized solar cells (DSSCs) , organic optical detectors, organic photoreceptors, organic field-effect devices (OFQDs), light-emitting electrochemical cells (LECs), organic laser diodes, and organic plasmonic light-emitting devices. [0003] In 1987, Tang and Van Slyke of Eastman Kodak reported a double-layer organic electroluminescent device that included an arylamine ho...

Claims

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Application Information

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IPC IPC(8): C07D401/04C07D405/14C07D409/14C07D401/14C07D401/10H01L51/50H01L51/54
CPCC07D401/04C07D405/14C07D409/14C07D401/14C07D401/10H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/16
Inventor 王俊飞陈晓夏传军邝志远
Owner BEIJING SUMMER SPROUT TECH CO LTD
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