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Delayed fluorescent material and preparation method thereof and device prepared by using material

A delayed fluorescence, compound technology, applied in the direction of luminescent materials, electric solid devices, semiconductor devices, etc., to achieve the effect of good performance and simple preparation process

Inactive Publication Date: 2019-03-05
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 reliability have been developed. Therefore, among reliable fluorescent substances, it is necessary to develop substances that increase quantum efficiency and improve luminous efficiency.

Method used

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  • Delayed fluorescent material and preparation method thereof and device prepared by using material
  • Delayed fluorescent material and preparation method thereof and device prepared by using material
  • Delayed fluorescent material and preparation method thereof and device prepared by using material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Synthesis of Intermediates 1-4

[0043]

[0044] Under nitrogen, 7H-dibenzo[c,g]carbazole (13.3g, 49.92mmol), 4-bromo-1-iodo-2-nitrobenzene (32.74g, 99.85mmol), potassium carbonate (13.8 g, 99.85mmol), copper (6.35g, 99.85mmol), ethylene glycol (350ml) were stirred, under the condition of 100 ℃, the stirring reaction was completed after about 1 hour, after washing with deionized water, acetone and methanol were recrystallized, Intermediate 1-1 (15.9 g, 68%) was obtained. Mass spectrum: measured value is 466, theoretical value is 466.03.

[0045] Under nitrogen, intermediate 1-1 (13.7g, 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 room temperature, add deionized water, filter to remove active zinc, add hydrochloric acid solution (hydrochloric acid: deionized water=1:10vol.%) (500ml) to the solution after filtration, after washing with deionized water, o...

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Abstract

The invention relates to a delayed fluorescent compound by connecting an electron-donating group of dibenzoindole carbazole, an electron-withdrawing group of dibenzoindole carbazole, acridine, carbazole or triphenylamine, and dibenzothiophene sulfone or diphenyl sulfone. The delayed fluorescent compound provided by the invention is simple in preparation process and has good performance.

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): C07D487/06C07D519/00C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D487/06C07D519/00C09K2211/1029C09K2211/1092H10K85/631H10K85/6576H10K85/6572H10K50/125
Inventor 贺金鑫姜志远姜晓晨索红光王进政金福荣
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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