Electroluminescent compound and electroluminescent device comprising same

A technology of electroluminescent components and compounds, applied in the direction of electroluminescent light sources, silicon organic compounds, electrical components, etc., can solve the problems of low blue color purity, difficulty in reflecting dark blue, insufficient luminous efficiency and brightness, etc., to achieve Excellent color purity, excellent luminous properties, and excellent thermal stability

Active Publication Date: 2015-11-25
SFC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As a blue light-emitting substance, U.S. Patent No. US7053255 discloses a blue light-emitting compound having a diphenylanthracene structure in the center and an aryl group at the end, and an organic electroluminescent device using it, but the luminous efficiency and brightness are insufficient. The problem
On the one hand, U.S. Patent Publication No. US7233019, Korean Laid-Open Patent Publication No. 2006-0006760, etc. disclose an organic electroluminescent device utilizing a pyrene-based compound substituted with an arylamine substituent, but due to blue color purity Low, it is difficult to represent deep blue (deepblue), so it has problems with full-color displays that represent natural colors

Method used

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Embodiment approach

[0031] According to a preferred embodiment of the present invention, when the compound of the [chemical formula 1] is based on L---L', all of A and B or A or B have more than one substituted or unsubstituted silyl group , excluding the case where the substituents from C to D are all hydrogen; on the basis of L---L', all of C and D or C or D have more than one substituted or unsubstituted silyl group, The case where all the substituents of A to B are hydrogen is excluded.

[0032] In the organic electroluminescent compound according to [Chemical Formula 1] of the present invention, although said A to D may each independently be an aryl group having 6 to 40 carbon atoms substituted or unsubstituted by one or more substituents , but in order to specifically describe the present invention, when the above-mentioned A to D are phenyl groups, they can be represented by [Chemical Formula 2] and have an asymmetric structure based on L---L'. However, the scope of the present invention ...

Synthetic example 1

[0129] Synthesis Example 1: Synthesis of [Compound 8]

Synthetic example 1-(1

[0130] Synthesis Example 1-(1): Synthesis of Intermediate 1-a

[0131]

[0132] 40g (0.16mole) of 2,5-dibromoaniline (2,5-Dibormoaniline), Pd(PPh 3 ) 4 Add 7.4g (0.006mole), 88.1g (0.64mole) of potassium carbonate and 46.6g (0.0.38mole) of phenylboronic acid into a 1000mL 4-neck round bottom flask, add 320mL of toluene, 160mL of ethanol, and 120mL of water to reflux for 12 hours. After the reaction, the organic layer was separated, and the aqueous layer was extracted twice with 100 mL of toluene. The collected organic layers were concentrated under reduced pressure, and recrystallized from methanol to obtain Intermediate 1-a (30 g, 76.7%).

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Abstract

The invention relates to an electroluminescent compound and an electroluminescent device comprising the same. The electroluminescent compound is characterized in that the electroluminescent compound is indicated by the following chemical formula (1) and has a non-symmetric structure with L---L' as a benchmark. According to the electroluminescent compound, substituent groups having high efficiency or long service life are respectively combined with pryene compound in a non-symmetric way, so illuminating efficiency and service life are improved and excitation purity and thermal stability are enhanced; the electroluminescent device comprising the same also has excellent excitation purity, illuminating efficiency and long service life; and the electroluminescent compound can be applied to various displaying elements.

Description

technical field [0001] The present invention relates to an organic electroluminescent compound and an organic electroluminescent element comprising the compound having high luminous efficiency and long life. Background technique [0002] The organic electroluminescence phenomenon refers to the phenomenon of converting electrical energy into light energy by using organic substances. An organic electroluminescence element utilizing the organic electroluminescence phenomenon generally has a positive electrode, a negative electrode, and a structure including an organic substance layer therebetween. Here, in order to improve the efficiency and stability of the organic electroluminescent element, the organic layer is mostly composed of a multilayer structure composed of different materials, for example, it may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, Electron injection layer, etc. In the structure of this organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C317/36C07D213/38C07C15/28C07C15/30C07C13/567C07C13/66C07C15/38C07F7/08C07D307/91C07D333/76C07D209/86C07C13/547C07D307/79C07C13/72C07C211/61C07C321/30C07C25/22C07C22/08C07C255/51C09K11/06H01L51/54
CPCY02B20/00H05B33/14C09K11/06C09K2211/1011
Inventor 金正洙柳然权高相原李秀珍金志丸朴真珠
Owner SFC CO LTD
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