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Novel organic electroluminescent material and organic light-emitting device

An electroluminescent material and organic technology, applied in the direction of luminescent materials, electrical solid devices, electrical components, etc., can solve the problems of triplet inactivation, high device driving voltage, and efficiency roll-off, so as to reduce fluorescence quenching and improve The effect of luminous efficiency

Inactive Publication Date: 2017-12-01
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this type of material is used as the host material, the driving voltage of the device is often high
[0005] In addition, when such phosphorescent materials are used in flat-panel displays, the luminous efficiency and energy consumption of the device are not ideal
For devices with diphenylamine or carbazole structures, under the condition of high current density, the triplet state is seriously deactivated, which directly shows the phenomenon of efficiency roll-off

Method used

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  • Novel organic electroluminescent material and organic light-emitting device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: 1 synthesis of compound

[0040]

[0041] Step1. Add 100mmol tripterene into 1L concentrated nitric acid, and react the mixture at 75°C for 24h. The resulting brown solution was cooled to room temperature. Add 5 L of ice water, stir, and filter the filter cake, wash with deionized water, and dry. The obtained crude product was subjected to column chromatography to obtain 64 mmol of the product. Yield 64%.

[0042] Dissolve 64 mmol of the nitrated product of tripterene in THF, add 10 equivalents of hydrazine hydrate and 5 equivalents of Raney nickel, and react at 60°C for 24 hours. The mixture was cooled to room temperature, filtered, and the filtrate was concentrated to obtain a white product, which was subjected to column chromatography to obtain 59 mmol of tripterene amide.

[0043] Dissolve 59 mmol of tripterene amination in concentrated hydrochloric acid, cool to 0°C, slowly add 3 equivalents of sodium nitrite aqueous solution, and stir for 10 m...

Embodiment 2

[0047] Embodiment 2: 2 synthesis of compound

[0048]

[0049] Step1. Add 100mmol tripterene into 1L concentrated nitric acid, and react the mixture at 75°C for 24h. The resulting brown solution was cooled to room temperature. Add 5 L of ice water, stir, and filter the filter cake, wash with deionized water, and dry. The obtained crude product was subjected to column chromatography to obtain 64 mmol of the product. Yield 64%.

[0050] Dissolve 64 mmol of the nitrated product of tripterene in THF, add 10 equivalents of hydrazine hydrate and 5 equivalents of Raney nickel, and react at 60°C for 24 hours. The mixture was cooled to room temperature, filtered, and the filtrate was concentrated to obtain a white product, which was subjected to column chromatography to obtain 59 mmol of tripterene amide.

[0051] Dissolve 59 mmol of tripterene amination in concentrated hydrochloric acid, cool to 0°C, slowly add 3 equivalents of sodium nitrite aqueous solution, and stir for 10 m...

Embodiment 3

[0055] Embodiment 3: 21 synthetics of compound

[0056]

[0057] Step1. Add 100mmol tripterene into 1L concentrated nitric acid, and react the mixture at 75°C for 24h. The resulting brown solution was cooled to room temperature. Add 5 L of ice water, stir, and filter the filter cake, wash with deionized water, and dry. The obtained crude product was subjected to column chromatography to obtain 64 mmol of the product. Yield 64%.

[0058] Dissolve 64 mmol of the nitrated product of tripterene in THF, add 10 equivalents of hydrazine hydrate and 5 equivalents of Raney nickel, and react at 60°C for 24 hours. The mixture was cooled to room temperature, filtered, and the filtrate was concentrated to obtain a white product, which was subjected to column chromatography to obtain 59 mmol of tripterene amide.

[0059] Dissolve 59 mmol of tripterene amination in concentrated hydrochloric acid, cool to 0°C, slowly add 3 equivalents of sodium nitrite aqueous solution, and stir for 10...

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Abstract

The invention provides an organic electroluminescent material and an organic light-emitting device, and belongs to the technical field of organic electroluminescent material materials. A compound of the organic electroluminescent material has a three-dimensional structure of triptycene, and can solve the technical problems of poor light-emitting performances such as low light-emitting efficiency and relatively high drive voltage of the organic electroluminescent material in the prior art. Compared with the prior art, the organic electroluminescent material and the organic light-emitting device have the advantages that: light-emitting efficiency is as high as 15.0 cd / A, drive voltage is as low as 4.7 V, and the organic electroluminescent material is an excellent OLED material.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a novel organic electroluminescent material and an organic light emitting device. Background technique [0002] An organic electroluminescent device is composed of a light emitting layer and a pair of electrodes on both sides of the light emitting layer. When an electric field is applied between the two electrodes, electrons are injected from the negative electrode and holes are injected from the positive electrode. In the light-emitting layer, the electrons and holes recombine to form an excited state, and the energy generated when the excited state returns to the ground state emits light. [0003] Organic electroluminescent materials have been developed for quite a long time, and fluorescent materials, as the first generation of light-emitting materials, are often used in the light-emitting layer. In addition, phosphorescent materials have also received...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D498/18C07D513/18C07F9/6561C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D498/18C07D513/18C07F9/6561C09K2211/1029C09K2211/1044C09K2211/1037C09K2211/1033H10K85/657H10K50/00
Inventor 孙可一蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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