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Organic light-emitting compound, and organic electroluminescent device using same

An organic compound and compound technology, applied in the field of organic electroluminescent elements, can solve the problems of poor thermal stability, low glass transition temperature, unsatisfactory life of organic EL elements, etc., and achieve improved efficiency and hole transport capability. excellent effect

Pending Publication Date: 2021-03-02
SOLUS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although conventional materials have advantages in light emitting characteristics, they have a low glass transition temperature and very poor thermal stability, so they cannot achieve a satisfactory level in terms of the lifetime of organic EL devices.

Method used

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  • Organic light-emitting compound, and organic electroluminescent device using same
  • Organic light-emitting compound, and organic electroluminescent device using same
  • Organic light-emitting compound, and organic electroluminescent device using same

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0217] [Synthesis Example 1] Synthesis of Compound 2

[0218]

[0219] In 10.0g (21.7mmol) of 9-bromospiro[benzo[c]fluorene-7,9'-xanthene] obtained in Preparation Example 1 and 7.0g (21.7mmol) of bis([1,1'- After adding 100 mL of toluene to biphenyl]-4-yl)amine, 1.0 g (1.1 mmol) of Pd was added to the reaction solution 2 (dba) 3 , 1.04g (2.2mmol) of XPhos, and 4.2g (43.4mmol) of NaOt-Bu were heated and refluxed at 120° C. for 3 hours. Then, the temperature of the reaction liquid after the above-mentioned heating and reflux was cooled to normal temperature, and 300 mL of purified water was poured into the reaction liquid to complete the reaction. The mixed liquid obtained after completion of the reaction was extracted with 500 mL of E.A., and washed with distilled water to obtain an organic layer. The resulting organic layer was treated with anhydrous MgSO 4 After drying and distillation under reduced pressure, it was purified by gel column chromatography to obtain 11....

Synthetic example 2

[0221] [Synthesis Example 2] Synthesis of Compound 4

[0222]

[0223] Use N-([1,1'-biphenyl]-4-yl)-[1,1'-biphenyl]-2-amine to replace the bis([1,1'-biphenyl) used in Synthesis Example 1 Except for phenyl]-4-yl)amine, the same procedure as [Synthesis Example 1] was carried out to obtain 9.9 g of the target compound (yield 65%).

[0224] [LCMS]: 701

Synthetic example 3

[0225] [Synthesis Example 3] Synthesis of Compound 7

[0226]

[0227] Use N-([1,1'-biphenyl]-2-yl)-9,9-dimethyl-9H-fluoren-2-amine to replace the bis([1,1' Except for -biphenyl]-4-yl)amine, the same procedure as in [Synthesis Example 1] was carried out to obtain 8.5 g of the target compound (yield 70%).

[0228] [LCMS]: 741

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PUM

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Abstract

The present invention relates to a novel organic light-emitting compound and an organic electroluminescent device using same and, more specifically, to a compound having excellent thermal stability, electrochemical stability, light-emitting ability, and hole / electron transport ability; and an organic electroluminescent device which includes the compound in at least one organic material layer and thus has improvements in characteristics such as emission efficiency, driving voltage, and lifespan.

Description

technical field [0001] The present invention relates to a novel organic light-emitting compound and an organic electroluminescent device using the same, and more specifically, to a compound having excellent thermal stability, electrochemical stability, and hole transport ability, and a compound obtained by including it in one or more layers. An organic electroluminescent element with improved properties such as luminous efficiency, driving voltage, and lifetime in an organic layer. Background technique [0002] In an organic electroluminescent element (hereinafter referred to as "organic EL element"), when a current or voltage is applied between two electrodes, holes are injected from the anode into the organic layer, and electrons are injected from the cathode into the organic layer. When the injected holes and electrons meet, an exciton is formed, and the exciton transitions to a ground state to emit light. At this time, substances used for the organic layer are classifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/80H01L51/50C07D335/10C07D405/12C07D407/12C07D409/12C07D409/14H01L51/00
CPCC07D409/12C07D335/04C07D409/14C07D405/12C07D311/96C07D407/12H10K85/636H10K85/631H10K85/6576H10K85/6574H10K85/6572C07D311/80C07D335/10H10K50/15C09K11/06C09K2211/1018H10K85/633H10K85/615
Inventor 沈载依朴镐喆严玟植金荣模李龙焕朴祐材
Owner SOLUS ADVANCED MATERIALS CO LTD
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