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Organic luminescent compound, preparation method thereof, and organic electroluminescent device containing compound

A light-emitting compound and compound technology, applied in the direction of silicon organic compounds, tin organic compounds, germanium organic compounds, etc., can solve the problems of high driving voltage, reduced lifespan, low glass transition temperature, etc., and achieve high power efficiency and good repeatability , the effect of high yield

Inactive Publication Date: 2019-01-11
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these materials provide good light emitting characteristics, they have the following disadvantages: (1) Reduced lifetime of the device due to their low glass transition temperature and poor thermal stability
(2) Organic EL devices containing phosphorescent host materials require higher driving voltages
However, organic EL devices using these materials have problems in quantum efficiency and lifetime

Method used

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  • Organic luminescent compound, preparation method thereof, and organic electroluminescent device containing compound
  • Organic luminescent compound, preparation method thereof, and organic electroluminescent device containing compound
  • Organic luminescent compound, preparation method thereof, and organic electroluminescent device containing compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Embodiment 1: preparation compound 1

[0082]

[0083] After adding 4-bromo-9-phenylcarbazole (60 mmol) and 200 mL of tetrahydrofuran to the reaction vessel, the vessel was cooled to -78°C under a nitrogen atmosphere. Then n-butyllithium (2.5M, 60mmol) was slowly added dropwise to the mixture. After stirring the mixture at -78°C for 30 minutes, it was stirred at room temperature for 3 hours and cooled to -78°C. Thereafter, fluorenone (60 mmol) dissolved in 200 mL of tetrahydrofuran was slowly added dropwise to the mixture. After the addition, the reaction temperature was allowed to warm slowly to room temperature, and the mixture was stirred for 16 hours. Aqueous ammonium chloride solution was then added to the reaction solution to complete the reaction, and the reaction solution was extracted with ethyl acetate. The extracted organic layer was then dried using magnesium sulfate, and the solvent was removed using a rotary evaporator. The remaining material was pu...

Embodiment 2

[0085] Embodiment 2: preparation compound 7

[0086]

[0087] Compound 7 was prepared according to the method of Example 1 (yield = 75% mass spectrum value: 818.0). The difference from Example 1 is that Intermediate 1-2 is used instead of Intermediate 1-1, and Intermediate 2-7 is used instead of Intermediate 2-1.

Embodiment 3

[0088] Embodiment 3: preparation compound 13

[0089]

[0090] Compound 13 was prepared according to the method of Example 2 (yield = 78% mass spectrum value: 776.15.0). The difference from Example 2 is that Intermediate 2-13 is used instead of Intermediate 2-7.

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Abstract

The invention relates to the field of organic luminescent materials, and concretely relates to an organic luminescent compound, a preparation method thereof, and an organic electroluminescent device containing the compound. Introduction of arylamine makes the organic luminescent compound have hole injection ability / transport ability, a high power efficiency and a long life; and a suitable glass transition temperature is obtained by introducing a heterocycle in order to obtain the high-quality organic electroluminescent material. The organic electroluminescent device produced from the organic luminescent compound has an excellent current efficiency, an excellent power efficiency and a long life. The preparation method of the organic luminescent compound has the advantages of good repeatability and high yield.

Description

technical field [0001] The invention relates to the technical field of organic luminescent materials, in particular to an organic luminescent compound, a preparation method and an organic electroluminescent device containing the compound. Background technique [0002] Electroluminescent devices (EL devices) are self-luminescent devices that are advantageous in that they provide wider viewing angles, greater contrast ratios, and faster response times. [0003] The organic EL element is a self-luminous element utilizing the principle that a fluorescent substance emits light by utilizing the recombination energy of holes injected from the anode and electrons injected from the cathode by applying an electric field. It has the following structure: an anode, a cathode, and an organic layer in between. In order to improve the efficiency and stability of organic EL elements, the organic material layer includes multiple layers with different materials such as hole injection layer (H...

Claims

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Application Information

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IPC IPC(8): C07D209/86C07D405/12C07D209/88C07D405/14C07D409/14C07D413/12C07D401/12C07D403/12C07D209/80C07D495/04C07D491/048C07D487/04C07D513/04C07D498/04C07D471/04C07F7/08C07F7/22C07F7/30C07D333/58C07D307/79C07D277/66C07D263/57C07D235/18C07D317/46C07D271/12C07D285/14C07D249/18C07D327/04C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D209/80C07D209/86C07D209/88C07D235/18C07D249/18C07D263/57C07D271/12C07D277/66C07D285/14C07D307/79C07D317/46C07D327/04C07D333/58C07D401/12C07D403/12C07D405/12C07D405/14C07D409/14C07D413/12C07D471/04C07D487/04C07D491/048C07D495/04C07D498/04C07D513/04C07F7/0807C07F7/30C09K2211/1011C09K2211/1014C09K2211/1022C09K2211/1029C09K2211/1007C09K2211/1092C09K2211/1096C09K2211/1088C09K2211/1051C09K2211/1059C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1048H10K85/624H10K85/615H10K85/622H10K85/631H10K85/6565H10K85/636H10K85/626H10K85/633H10K85/654H10K85/657H10K85/6576H10K85/6574H10K85/40H10K85/6572H10K50/12H10K50/15H10K50/17
Inventor 汪康王辉马晓宇张成成孙毅金成寿李文军
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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