Novel compound and organic electroluminescent device including same

A technology of organic light-emitting devices and compounds, which is applied in the field of organic light-emitting devices and novel arylamine compounds, can solve the problems of high driving voltage, low efficiency, and short life, and achieve high color purity, high efficiency, and film stability and life. Effect

Pending Publication Date: 2018-12-28
DONGJIN SEMICHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, many compounds have been known as substances used in such organic light-emitting devices, but in the case of organic light-emitting d

Method used

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  • Novel compound and organic electroluminescent device including same
  • Novel compound and organic electroluminescent device including same
  • Novel compound and organic electroluminescent device including same

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0082] Preparation Example 1

[0083] The reactants IM 1-1 to IM 1-4 and the reactants IM2-1 to IM 2-6 used for synthesizing the target compound are as follows:

[0084]

[0085]

[0086] Synthesis of compound 1

[0087]

[0088] In a round bottom flask, mix 25.0g of IM 1-1 (2.4eq), 5.0g of IM 2-1 (1eq), t-BuONa (2.5eq), Pd 2 (dba) 3 (0.04eq), (t-Bu) 3 After P (0.08 eq) was dissolved in 10 vol of toluene, it was stirred under reflux. The reaction was confirmed by thin layer chromatography (TLC), and after adding water, the reaction was terminated. After extracting the organic layer with methyl cellulose (MC) and performing filtration under reduced pressure, column purification and recrystallization were performed to obtain 14.8 g (yield 71%) of compound 1.

[0089] m / z: 705.34 (100.0%), 706.34 (58.8%), 707.35 (17.0%), 708.35 (3.2%)

[0090] Synthesis of compound 2

[0091]

[0092] Using IM 2-2 instead of IM 2-1, compound 2 was synthesized by the same method as compound 1 (yield 68%)...

Example Embodiment

[0138] Example 1: Preparation of organic light emitting device

[0139] Ultrasound with distilled water The thickness of the glass substrate is coated with indium tin oxide (ITO) as a thin film for cleaning. When the distilled water cleaning is completed, ultrasonic cleaning is performed with solvents such as isopropanol, acetone, methanol, etc., and after drying, the substrate is transferred to a plasma cleaning machine, and the substrate is cleaned with oxygen plasma for 5 minutes. The upper part of the substrate uses a thermal evaporator as a hole injection layer (H1-01) to form a film as a hole transport layer After the compound 1 is formed into a film, the light-emitting layer is doped with 3% BH01:BD01 to Make a film. Then, as the electron transport layer, ET01: Liq (1:1) after making the film, put LiF, The aluminum (Al) is formed into a film, and the device is encapsulated in a glove box, thereby preparing an organic light-emitting device.

Example

[0140] Example 2 to Example 13: Preparation of organic light emitting device

[0141] Using the same method as in Example 1, an organic light-emitting device in which a hole transport layer was formed into a film using Compound 2 to Compound 13 instead of Compound 1 was prepared.

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Abstract

The invention relates to a novel arylamine compound which, if used as a hole transport layer (HTL), a light emitting auxiliary layer (HT prime) or a hole injection layer (HIL), can increase hole injection and transport characteristics, thereby providing high efficiency and long life of a device.

Description

technical field [0001] The present invention relates to novel arylamine compounds and organic light-emitting devices comprising the same. Background technique [0002] In organic light emitting diodes, materials used as organic layers can be roughly classified into light emitting materials, hole injection materials, hole transport materials, electron transport materials, electron injection materials, etc. according to functions. Moreover, the above-mentioned luminescent materials can be classified into high molecular weight and low molecular weight according to the molecular weight, and can be classified into fluorescent materials derived from the singlet excited state of electrons and phosphorescent materials derived from the triplet excited state of electrons according to the light emitting mechanism. Luminescent colors are classified into blue, green, red luminescent materials and yellow and orange luminescent materials required to reflect better natural colors. Also, in...

Claims

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Application Information

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IPC IPC(8): C07C211/54C07D209/86C07D307/91C07D333/76C07D409/14H01L51/50H01L51/54
CPCC07C211/54C07D209/86C07D307/91C07D333/76C07D409/14C07C2603/18H10K85/626H10K85/615H10K85/631H10K85/6576H10K85/6574H10K85/6572H10K50/00H10K85/633H10K50/156
Inventor 朴旻洙安贤哲姜京敏徐净雅李成圭
Owner DONGJIN SEMICHEM CO LTD
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