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Novel organic electroluminescent compounds and organic electroluminescent device using the same

An electroluminescence and compound technology, applied in the field of organic electroluminescence devices, can solve the problems of no matrix-dopant thin layer, lack of reliable data for long life, and difficulty in practical use of color purity and efficiency

Active Publication Date: 2012-05-09
ROHM & HAAS ELECTRONICS MATERIALS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] As mentioned above, conventional materials are composed of a single layer without forming a host-dopant thin layer, and are difficult to use practically in terms of color purity and efficiency
Reliable data are lacking for its long lifespan

Method used

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  • Novel organic electroluminescent compounds and organic electroluminescent device using the same
  • Novel organic electroluminescent compounds and organic electroluminescent device using the same
  • Novel organic electroluminescent compounds and organic electroluminescent device using the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0090] [Preparation Example 1] Preparation of Compound (1)

[0091]

[0092] Preparation of compound (A)

[0093] Charge methyl 2-bromobenzoate (40 g, 152.6 mmol), naphthalen-1-ylboronic acid (31.5 g, 183.2 mmol) and tetrakis(triphenylphosphine) palladium [Pd(PPh 3 ) 4 ] (8.8 g, 7.62 mmol). While stirring the mixture, toluene (1 L) was added, followed by 2M potassium carbonate solution (228 mL, 458 mmol) and ethanol (228 mL). The mixture was then heated to reflux at 100°C for 5 hours. When the reaction was complete, the reaction mixture was cooled to room temperature, extracted with distilled water and ethyl acetate. MgSO for organic layer 4 Dry and evaporate the solvent using a rotary evaporator. Purification by column chromatography (hexane and ethyl acetate as eluents) gave compound (A) (35 g, 87%).

[0094] Preparation of compound (B)

[0095]A single-necked flask containing compound (A) (24 g, 91.49 mmol) was evacuated and filled with argon. After adding tetra...

Embodiment 1

[0114] [Example 1] Production of OLEDs using the electroluminescent compound of the present invention

[0115] OLED devices are fabricated using the electroluminescent materials of the invention.

[0116] First, the transparent electrode ITO film (15Ω / □) made of glass for OLED (purchased from Samsung Corning) was ultrasonically cleaned with trichlorethylene, acetone, ethanol and distilled water in sequence, and stored in isopropyl alcohol before use. alcohol.

[0117] Then, the ITO substrate was installed in the substrate holder (folder) of the vacuum vapor deposition equipment, and the 4.4'0.4"-tri(N,N-(2-naphthyl)-phenylamino) tri(N,N-(2-naphthyl)-phenylamino) tri Aniline (2-TNATA) is placed in the small chamber (cell) of vacuum vapor deposition equipment, then exhausted to indoor vacuum degree reaches 10 -6 support. A current is applied to the small chamber to evaporate 2-TNATA, thereby vapor-depositing a hole injection layer with a thickness of 60 nanometers on the ITO ...

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PUM

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Abstract

Disclosed are novel organic electroluminescent compounds and organic electroluminescent devices comprising the same. With good luminous efficiency and excellent life property, the disclosed organic electroluminescent compounds can be used to manufacture OLED devices having very good operation life.

Description

technical field [0001] The present invention relates to novel organic electroluminescent compounds (especially compounds represented by chemical formula (1)) and organic electroluminescent devices comprising the same. [0002] Background technique [0003] An electroluminescent (EL) device is a self-luminous display device, and among various display devices, the electroluminescent device has advantages of a wide viewing angle, excellent contrast, and a fast response rate. Eastman Kodak first developed an organic EL device in 1987 [Appl.Phys.Lett.51, 913, 1987], which uses low molecular weight aromatic diamine and aluminum complexes Substances of the electroluminescent layer. [0004] An organic EL device is a device having the property that when charges are applied to an organic film formed between an electron injection electrode (cathode) and a hole injection electrode (anode), electrons and holes are paired, then annihilated and emit light. The device can be formed on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06
CPCC09K2211/1011H01L51/5012C09K2211/1029C09K11/06H05B33/14H01L51/0058H10K85/626H10K50/11
Inventor 金荣佶赵英俊权赫柱金奉玉金圣珉尹胜洙
Owner ROHM & HAAS ELECTRONICS MATERIALS LLC