Organic luminous compound and organic electroluminescence device thereof

A technology for electroluminescent devices and light-emitting compounds, which is applied in organic chemistry, electro-solid devices, electrical components, etc., to achieve the effect of high luminous efficiency and low driving voltage

Inactive Publication Date: 2019-01-25
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently disclosed electron transport materials need to be improved in terms of efficiency and life, so the development of stable and efficient electron transport materials to improve device efficiency and prolong device life has very important practical application value

Method used

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  • Organic luminous compound and organic electroluminescence device thereof
  • Organic luminous compound and organic electroluminescence device thereof
  • Organic luminous compound and organic electroluminescence device thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0063] The preparation method of the organic electroluminescent compound of the present invention can be prepared by a conventional coupling reaction, for example, it can be prepared by the following synthetic route, but the present invention is not limited thereto:

[0064]

[0065] In the present invention, there is no special limitation on the reaction conditions of the above reactions, and the reaction conditions well known to those skilled in the art can be adopted. The present invention has no special limitation on the sources of the raw materials used in the above reactions, which can be commercially available products or prepared by methods well known to those skilled in the art. The organic electroluminescence compound of the invention has few synthesis steps, simple treatment and easy industrial production.

[0066] The present invention also provides an organic electroluminescent device. The organic electroluminescent device is an organic electroluminescent devic...

Embodiment 1

[0071] Embodiment 1: the preparation of compound 1

[0072]

[0073] Compounds 1-1 (5.16 g, 20 mmol), 1-2 (4.14 g, 20 mmol) and sodium ethoxide were completely dissolved in 100 ml of ethanol in a round bottom flask, and the resulting solution was heated and stirred. After the reaction was completed, the residue obtained by concentrating the obtained product under reduced pressure was diluted with tetrahydrofuran, and washed with water and brine. The organic solvent layer was collected, water was removed over anhydrous magnesium sulfate, and the residue was filtered, then concentrated under reduced pressure. The concentrated solution was purified by silica gel column chromatography to prepare compound 6.70 g of compound 1-3, yield 75%.

[0074] Under the protection of nitrogen, 1-3 (44.70g, 100mmol), 1-4 (38.62g, 100mmol), potassium carbonate (1.24g, 9.00mmol), and toluene 200mL were added into a 2L reactor and stirred. The temperature in the reactor was raised to 70°C, an...

Embodiment 2

[0075] Embodiment 2: the preparation of compound 2

[0076]

[0077] Compound 2 was obtained by replacing 1-4 in Example 1 with 2-4 as shown above. Mass Spectrum m / z: 627.19 (calculated: 627.11). Theoretical element content (%)C 39 h 18 f 5 NS: C, 74.63; H, 2.89; F, 15.13; N, 2.23; S, 5.11 Measured element content (%): C, 74.70; H, 2.90; F, 15.13; N, 2.22; It was confirmed above that the obtained product was the target product 2.

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PUM

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Abstract

The invention provides an organic luminous compound and an organic electroluminescence device thereof and belongs to the technical field of organic electroluminescence. A main body structure of the compound includes fluorene alkene electron-withdrawing groups, the transmission performance of charge carriers is improved, and an excellent electron transmission capability can be represented. Secondly, the fluorene alkene electron-withdrawing groups are connected with dibenzothiophene electron-donating groups through a bridging structure, correspondingly the whole compound has a bipolar characteristic, the binding force between holes and electrons can be enhanced, diffusion of the holes to an electron transmission layer is stopped, and therefore a luminous phenomenon is prevented from happening on the interfaces of a luminous layer and the electron transmission layer. The organic luminous compound is applied to the organic electroluminescence device, shows the advantages of being low in driving voltage and high in luminescence efficiency and is an organic luminous material with excellent properties.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to an organic light-emitting compound and an organic electroluminescence device. Background technique [0002] Organic light-emitting diode (OLED) is a double-injection light-emitting device that converts electrical energy into light energy. Its structure is like a sandwich structure, consisting of an indium tin oxide anode, a metal cathode, and an organic layer between the two. The driving principle is as follows: apply an appropriate voltage between the two poles, holes are injected from the anode side, electrons are injected from the cathode side, and the two pass through the charge transport layer to the light-emitting layer, and form excitons through interaction. The electrons return from the excited state to the ground state, and directly convert electrical energy into light energy of organic semiconductor material molecules. [0003] Organic electrolumine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D333/76C07D409/10C07D409/14C07D409/04C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D333/76C07D409/04C07D409/10C07D409/14C09K2211/1092C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1088H10K85/615H10K85/626H10K85/6576H10K85/6574H10K50/18H10K50/15H10K50/11
Inventor 杜明珠蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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