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Organic light-emitting material and OLED device comprising same

A light-emitting material, organic technology, applied in the direction of light-emitting materials, organic chemistry, electric solid devices, etc., can solve problems such as insufficient development

Inactive Publication Date: 2020-05-08
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order for organic light-emitting devices to have sufficiently excellent characteristics, materials forming organic material layers, such as hole injection materials, hole transport materials, light emitting materials, electron transport materials, electron injection materials, etc., first need to be supported by stable and effective materials , however, the current development of stable and efficient materials for organic material layers of organic light-emitting devices is still insufficient

Method used

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  • Organic light-emitting material and OLED device comprising same
  • Organic light-emitting material and OLED device comprising same
  • Organic light-emitting material and OLED device comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In this example, compound 1 was prepared by the following method, and the preparation route is as follows:

[0088]

[0089] Compound 1-1 (62.5g, 233.4mmol) was placed in phosphorus trichloride (30.5ml, 350.1mmol), and the compound was heated at 220°C for 3h. Heating was stopped and extracted with tetrahydrofuran, the resulting solid was dissolved in ethanol (600ml) and heated to 80°C, then 10% aqueous potassium hydroxide solution (200ml) was added dropwise to the solution. Then the obtained solid was filtered, recrystallized three times from toluene, and finally purified by sublimation to obtain compound 1-2. Compound 1-2 (26.1g, 83.3mmol), bromobenzene (8.7g, 83.3mmol), cesium carbonate (54.3g, 166.6mmol) and dichloro(1,3-bis(diphenylphosphino)propane) Nickel (4.5 g, 8.3 mmol) was placed in dioxane, and the mixture was refluxed for 1 h. After the reaction was completed, a solid obtained by vacuum distillation of the resultant was extracted with chloroform and wat...

Embodiment 2

[0093] In this example, the preparation method of compound 2 is the same as that of compound 1, the only difference is that its preparation raw materials are different (compounds 2-1 and 2-5 are used as raw materials), and compound 2 can be obtained after final sublimation and purification (yield 81% ), the specific synthetic route is as follows:

[0094]

[0095] Characterization data of compound 2:

[0096] Tg(DSC) 141°C, purity 99.9%; 1 H NMR (400MHz, CDCl 3 )δ (ppm): 8.81 (s, 1H), 8.55 (d, 1H), 8.05 (d, 2H), 7.97 (d, 1H), 7.91 (d, 4H), 7.70 (m, 2H), 7.60 ( d,1H),7.57(d,2H),7.48(d,2H),7.44(m,1H),7.40(d,2H),7.39(m,4H),7.32(m,2H),7.30(m ,5H), 7.22(m,1H).

Embodiment 3

[0098] In this example, the preparation method of compound 3 is the same as that of compound 1, the difference is only that the raw materials for its preparation are different (compounds 3-1 and 3-6 are used as raw materials), and finally compound 3 can be obtained after sublimation and purification (yield 89% ), the specific synthetic route is as follows.

[0099]

[0100] Characterization data of compound 3:

[0101] Tg(DSC) 148°C, purity 99.9%; 1 H NMR (400MHz, CDCl 3 )δ(ppm): 7.70(s,1H),7.54(d,4H),7.50(m,3H),7.48(d,6H),7.40(d,2H),7.32(m,6H),7.30( m,5H), 7.22(m,3H).

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Abstract

The present invention provides an organic light emitting material and an OLED device comprising the same, wherein the organic light emitting material has a structure represented by the following formula I. According to the invention, the organic light emitting material has high stability, high charge transfer ability and high glass transition temperature, and is suitable for being used as an electron transport layer main body material of an OLED device and emits green fluorescence, so that the OLED device obtains high efficiency (more than 76 Cd / A), long service life (LT95 is more than 130 hours) and low driving voltage (less than 4.3 V).

Description

technical field [0001] The invention belongs to the field of organic photoelectric materials, and relates to an organic luminescent material and an OLED device containing the same. Background technique [0002] An organic electroluminescent element has a structure in which a light-emitting layer containing a light-emitting material is sandwiched between a hole-transport layer and an electron-transport layer, and an anode and a cathode are installed on both sides of the sandwich structure. Organic electroluminescence devices are devices that emit light (fluorescence or phosphorescence) when excitons are deactivated by recombination of holes and electrons injected into the light-emitting layer, and are used in displays and the like. [0003] In order for organic light-emitting devices to have sufficiently excellent characteristics, materials forming organic material layers, such as hole injection materials, hole transport materials, light emitting materials, electron transport...

Claims

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Application Information

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IPC IPC(8): C07F9/6568C09K11/06H01L51/50H01L51/54
CPCC07F9/65685C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1096H10K85/615H10K85/657H10K50/11H10K50/16
Inventor 黄雪明梁花李丹丹
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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