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OLED (Organic Light Emitting Diode) material and application thereof

A technology selected from phenyl and phenyl, which is applied in the field of small-molecule OLED materials, can solve problems such as difficult to meet the needs of use, and achieve the effect of excellent molecular quality and improved device efficiency

Inactive Publication Date: 2019-01-18
VALIANT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, the hole transport layer material plays the role of transporting positive charges in the OLED device, and its chemical structure is mainly a triarylamine structure, that is, a nitrogen atom is connected to three aromatic substitutions with the same or different structures. The earliest reported hole transport material is NPB (CAS-RN: 123847-85-8). NPB is the most widely used hole transport material, but NPB also has its specific scope of application and inherent Disadvantages, with the continuous expansion of the application field of OLED technology, hole transport materials such as NPB have become more and more difficult to meet the needs of use, so it is of great significance to further develop OLED materials with good stability, high efficiency and strong applicability

Method used

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  • OLED (Organic Light Emitting Diode) material and application thereof
  • OLED (Organic Light Emitting Diode) material and application thereof
  • OLED (Organic Light Emitting Diode) material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of embodiment 1 intermediate D01

[0028]

[0029] Using compound A01 (CAS-RN: 84-12-8) and compound B01 as raw materials, the intermediate D01 was prepared by referring to the method described in the literature (DOI: 10.1021 / ol502418k), and 42.7 g of the target product was obtained. High-resolution mass spectrum, positive ion mode , formula C 17 h 12 N 2 O, theoretical value 260.0950, test value 260.0957.

Embodiment 2

[0030] The preparation of embodiment 2 intermediate D02

[0031]

[0032] Using compound A01 and compound B02 as raw materials, the intermediate D02 was prepared according to the method described in the literature (DOI: 10.1021 / ol502418k), and 37.4 g of the target product was obtained. High-resolution mass spectrometry, positive ion mode, molecular formula C 27 h 16 N 2 O, theoretical value 384.1263, test value 384.1258.

Embodiment 3

[0033] The preparation of embodiment 3 intermediate F01

[0034]

[0035] In a 1000mL three-necked flask, add 2,2'-dibromo-1,1'-biphenyl (46.8g, 0.15mol), tetrahydrofuran (330g), under nitrogen protection, cool down to -85°C, add n-butyl Lithium n-hexane solution (2.5mol / L, 60mL, 0.15mol), 1 hour dropwise addition is completed, insulation 0.5 hour, the compound D01 (39.1g, 0.15mol) prepared in the embodiment 1 is dissolved in 220g tetrahydrofuran, then Slowly drop it into the above-mentioned 1000mL three-neck bottle, control the temperature to be less than -75°C, complete the dropwise addition in 1.5 hours, keep it warm for 2 hours, move the three-necked bottle into a water bath at 25°C, naturally raise the temperature to 5°C, and drop in a mass concentration of 5 % dilute hydrochloric acid 120g, stirred for 0.5 hours, separated, collected the organic phase, and removed the solvent to obtain 82.2g of the crude product of compound E01, which was directly put into the next st...

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Abstract

The invention relates to an OLED (Organic Light Emitting Diode) material and relates to application of OLED materials in organic electroluminescence devices. The material has a molecular structure ofa formula (I), wherein the structural formula is as shown in the specification. In the formula (I), R is selected from one of methyl and phenyl; and Ar1 and Ar3 are the same or different and are independently selected from one of phenyl, biphenyl, terphenyl, 9,9-dimethyl fluorenyl and dibenzofuran. The OLED material has appropriate molecular mass and excellent thermal stability, can adapt to an evaporation process of making a small-molecule organic electroluminescence device, can be made into an organic film by virtue of sublimation, and has excellent film stability. The OLED material simultaneously contains electron-absorbing cyclofluorenedienonaphthisodiazine structural units and electron donating triarylamine structural units, is applicable to an electron transfer layer and a hole transport layer of the OLED device, and is applied to the field of organic electroluminescence.

Description

technical field [0001] The invention relates to a small molecule OLED material with carrier transport capability, and relates to the application of the material in the field of organic electroluminescence, which belongs to the field of organic photoelectric materials. Background technique [0002] Organic electroluminescent diode (OLED) was produced in the 1980s. It is an organic device that converts electrical energy into light energy. It has self-illumination, wide viewing angle, fast response speed, wide color gamut, and flexible display. After 30 years of continuous development, this technology has gradually matured. At present, organic electroluminescent technology has been widely used in many products such as smart phones, flat-panel TVs, and virtual reality. [0003] Organic electroluminescent diode is a solid thin film light-emitting component, which has a sandwich-like multi-layer sandwich structure, in which each interlayer carries a different function, called a fu...

Claims

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Application Information

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IPC IPC(8): C07D471/10C09K11/06H01L51/54
CPCC09K11/06C07D471/10C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1088H10K85/636H10K85/633H10K85/6572H10K85/6574
Inventor 盛磊高宪鹏李银花胡葆华周银波孟凡民
Owner VALIANT CO LTD
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