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Delayed fluorescence compound, preparation method of delayed fluorescence compound and organic electroluminescence device

A technology of delayed fluorescence and compounds, which is applied in the fields of electrical solid state devices, chemical instruments and methods, electrical components, etc., to achieve the effect of simple preparation process, good luminous efficiency and long life.

Inactive Publication Date: 2018-11-02
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of red and green, phosphorescent substances with high luminous efficiency have been developed, but for red, no phosphorescent materials with high luminous efficiency and re

Method used

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  • Delayed fluorescence compound, preparation method of delayed fluorescence compound and organic electroluminescence device
  • Delayed fluorescence compound, preparation method of delayed fluorescence compound and organic electroluminescence device
  • Delayed fluorescence compound, preparation method of delayed fluorescence compound and organic electroluminescence device

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Embodiment Construction

[0049] Synthesis of Intermediates 1-4

[0050]

[0051] Under nitrogen, 9.9-dimethylacridine (10g, 47.8mmol), 4-bromo-1-iodo-2-nitrobenzene (32.74g, 99.85mmol), potassium carbonate (13.8g, 99.85mmol), Copper (6.35g, 99.85mmol) and ethylene glycol (350ml) were stirred, and the reaction was completed after stirring for about 1 hour at 100°C. Extract with acetone, take the organic layer, add hydrochloric acid solution (hydrochloric acid: deionized water = 1:10vol.%) (500ml). After washing with deionized water, recrystallization from acetone and methanol afforded Intermediate 1-1 (12 g, 59%). Mass spectrum: The theoretical value is 408, and the measured value is 408.05.

[0052] Under nitrogen, intermediate 1-1 (12g, 29.31mmol), acetic acid (300ml), stirred at 70°C, active zinc (activated with dilute hydrochloric acid) (15g), after color change, refluxed for 1 hour, cooled to At room temperature, add deionized water, filter to remove active zinc, add hydrochloric acid soluti...

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Abstract

The invention provides a delayed fluorescence compound, a preparation method of the delayed fluorescence compound and an organic electroluminescence device. The delayed fluorescence compound is formedthrough combination by connecting electron-donating groups of indolo[3,2,1-de]acridine with electron withdrawing groups of indolo[3,2,1-de]acridine, acridine, carbazole or triphenylamine and connecting dibenzothiophene sulfone or sulfobenzide.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to a delayed fluorescence compound, a preparation method thereof and an organic electroluminescence device prepared by using the material. Background technique [0002] Recently, with the increase in the size of display devices, the demand for flat-panel display elements with a small space occupation has increased, and organic light-emitting diodes are one of them. The organic light-emitting diodes called organic light emitting diodes (OLED) Technology is also developing at a high speed. [0003] An organic light emitting diode element is an element in which electrons and holes are injected from the cathode and anode into the luminescent material layer formed between the electron injection electrode (cathode) and the hole injection electrode (anode), and they are paired and then eliminated to emit light. Not only can components be formed on flexible (flexible) transpare...

Claims

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Application Information

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IPC IPC(8): C07D471/06C07D519/00C09K11/06H01L51/54
CPCC09K11/06C07D471/06C07D519/00C09K2211/1007C09K2211/1029C09K2211/1014C09K2211/1092H10K85/631H10K85/6576H10K85/6572
Inventor 金福荣贺金鑫王士凯
Owner JILIN OPTICAL & ELECTRONICS MATERIALS