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OLED (Organic Light Emitting Diode) luminescent material doped with rubrene, and preparation method thereof

A luminescent material, rubrene technology, which is applied in the field of rubrene-doped OLED luminescent material and its preparation, can solve the problems of complicated process, difficult preparation, poor stability, etc., and achieve easy process control, improved luminous efficiency, The effect of not easy to crystallize

Inactive Publication Date: 2017-06-20
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Traditional small-molecule OLED light-emitting materials are difficult to prepare and have poor stability; while the luminous efficiency and stability of general polymer OLED light-emitting materials have always been the main problems; although doped organic light-emitting materials have solved the above problems to a certain extent, but There are many problems in the existing technology such as complex process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Mix 162kg of p-nitrophenylacetonitrile and 122kg of p-hydroxybenzaldehyde, dissolve in methanol, add 0.2L of piperidine dropwise, and heat to make it react. The reaction temperature is 75°C, and the reaction time is 4h. Naturally cool to room temperature after the reaction, filter, and wash with ethanol at least 3 times, then recrystallize to obtain intermediate product A;

[0050] (2) Dissolve 100kg of intermediate product A in 3000kg of dioxane, add 40kg of Na 2 S·9H 2 O, raise the temperature to start the reaction. The reaction temperature is 85°C, and the reaction time is 4.5h. After the reaction was finished, it was naturally cooled to room temperature, and the pH was adjusted to 7.5 with sodium bicarbonate solution, then extracted with ethyl acetate, and the intermediate product B was obtained through column chromatography of petroleum ether and ethyl acetate;

[0051] (3) Dissolve 100kg of intermediate product B in 100L of dimethylformamide, add 30kg of s...

Embodiment 2

[0055] (1) Mix 162kg p-nitrophenylacetonitrile and 122kg p-hydroxybenzaldehyde, dissolve in ethanol, add 0.2L piperidine dropwise, and heat to make it react. The reaction temperature is 80°C, and the reaction time is 3h. Naturally cool to room temperature after the reaction, filter, and wash with ethanol at least 3 times, then recrystallize to obtain intermediate product A;

[0056] (2) Dissolve 100kg of intermediate product A in 3200kg of dioxane, add 45kg of Na 2 S·9H 2 O, raise the temperature to start the reaction. The reaction temperature is 95°C, and the reaction time is 3.5h. After the reaction was finished, it was naturally cooled to room temperature, and the pH was adjusted to 8 with sodium bicarbonate solution, then extracted with ethyl acetate, and the intermediate product B was obtained through column chromatography of petroleum ether and ethyl acetate;

[0057] (3) Dissolve 100kg of intermediate product B in 100L of dimethylformamide, add 30kg of sodium hydrox...

Embodiment 3

[0060] (1) Mix 162kg p-nitrophenylacetonitrile and 122kg p-hydroxybenzaldehyde, dissolve in propylene glycol, add 0.2L piperidine dropwise, and heat to make it react. The reaction temperature is 78°C, and the reaction time is 3.5h. Naturally cool to room temperature after the reaction, filter, and wash with ethanol at least 3 times, then recrystallize to obtain intermediate product A;

[0061] (2) Dissolve 100kg of intermediate product A in 3500kg of dioxane, add 50kg of Na 2 S·9H 2 O, raise the temperature to start the reaction. The reaction temperature is 90°C, and the reaction time is 4h. After the reaction was finished, it was naturally cooled to room temperature, and the pH was adjusted to 7.5 with sodium bicarbonate solution, then extracted with ethyl acetate, and the intermediate product B was obtained through column chromatography of petroleum ether and ethyl acetate;

[0062] (3) Dissolve 100kg of intermediate product B in 100L of dimethylformamide, add 30kg of so...

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Abstract

The invention provides an OLED (Organic Light Emitting Diode) luminescent material doped with rubrene, and a preparation method thereof. A cyanogens group is added into the vinyl of poly(dialkoxyl p-styrene) to obtain cyano-poly(dialkoxyl p-styrene), and red fluorochrome rubrene is doped to greatly improve the stability and the luminous efficiency of the luminescent material. Compared with a small molecular material used by a traditional method, the OLED luminescent material has the characteristics of being unlikely to crystallize so as to be favorable for improving the stability of the device. Compared with a general high polymer material, the OLED luminescent material is characterized in that molecules generate a strong pi-pi accumulation function due to a rigid rodlike cyanostyrene structure, and therefore, fluorescence intensity is greatly enhanced. The scheme of the technology has the advantages of simple process and easily controlled technology and is suitable for mass production.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to the improvement of OLED electroluminescent materials, in particular to a rubrene-doped OLED luminescent material and a preparation method thereof. Background technique [0002] The 21st century is the era of knowledge economy. With the advancement of science and technology and the development of society, the amount of information that human beings come into contact with is constantly increasing. Therefore, the development of fast, miniature, highly integrated and intelligent information display devices has become an One of the research hotspots in this field. In recent years, the new flat panel display (PFD) is a very competitive product to the traditional cathode ray tube display (CRT). Broad room for development. [0003] Liquid crystal display technology is one of the most mature flat panel display technologies at present. It has extensive and mature applications in no...

Claims

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Application Information

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IPC IPC(8): C09K11/06C09K11/02
CPCC09K11/06C09K11/02
Inventor 陈庆曾军堂王镭迪
Owner CHENDU NEW KELI CHEM SCI CO LTD
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