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Arylamine compound containing indenofluorene group and organic electroluminescent device

An indenofluorene and compound technology, applied in the field of organic electroluminescent materials, can solve problems such as the influence of device life and the phase transition of hole transport materials, and achieve the effects of easy adjustment, increased glass transition temperature, and enhanced stability.

Pending Publication Date: 2022-07-26
上海钥熠电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the hole transport material is prone to phase change under the action of accumulated Joule heat during long-term operation of the device, which has a great impact on the life of the device.

Method used

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  • Arylamine compound containing indenofluorene group and organic electroluminescent device
  • Arylamine compound containing indenofluorene group and organic electroluminescent device
  • Arylamine compound containing indenofluorene group and organic electroluminescent device

Examples

Experimental program
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Embodiment 1

[0034] Synthesis of Example 1 Compound HT-4

[0035]

[0036] (1) Synthesis of compound c2-4

[0037] Under a nitrogen atmosphere, acenaphthene-5-boronic acid (compound c1, 3.0g, 15.0mmol, 1eq), 2-bromo-4-chloro-1-iodobenzene (compound m2-4, 4.8g, 2-bromo-4-chloro-1-iodobenzene (compound m2-4, 4.8g, 15.0mmol, 1eq), and degassed toluene (100mL), after thorough mixing, sodium carbonate (2.4g, 22.5mmol, 1.5eq), tetrakis(triphenylphosphine)palladium (173.4mg, 0.15mmol, 1% eq), and degassed ethanol (40 mL) and deionized water (40 mL). The stirring was turned on, the above system was thoroughly mixed, and the reaction was refluxed for 6 hours under nitrogen atmosphere. After cooling to room temperature, toluene (100 mL) was poured into the reaction system. After standing for layers, extraction was performed with toluene (3×60 mL). The resulting organic phases were combined, dried over anhydrous magnesium sulfate, filtered, and the solvent was distilled off under reduced pressur...

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Abstract

The invention discloses an arylamine compound containing an indenofluorene group and an organic electroluminescent device. The arylamine compound has a structure as shown in a formula 1, r1 and R2 are independently selected from substituted or unsubstituted C1-C20 alkyl groups or substituted or unsubstituted cycloalkylene groups formed by connecting the substituted or unsubstituted alkyl groups with each other, or substituted or unsubstituted subbridged cycloalkylene groups containing no less than 2 rings formed by connecting the substituted or unsubstituted cycloalkylene groups with each other; ar1 and Ar2 are independently selected from a substituted or unsubstituted C6-C30 aryl group and a substituted or unsubstituted C3-C30 heteroaryl group; l, L1 and L2 are respectively and independently selected from a single bond, a substituted or unsubstituted C6-C30 arylene group and a substituted or unsubstituted C3-C30 heteroarylene group. The compound is used as a hole transport material for an organic electroluminescent device, can improve the luminous efficiency, prolong the service life and reduce the driving voltage, and is used for occasions of organic photovoltaics, panel display, illumination light sources and the like.

Description

technical field [0001] The present invention relates to the field of organic electroluminescent materials, in particular to an arylamine compound containing an indenofluorene group and an organic electroluminescent device. Background technique [0002] Organic electroluminescent devices (OLEDs) have the advantages of high brightness, low power consumption, light weight, thin thickness, fast response speed, high contrast ratio, and wide viewing angle, and are receiving extensive attention from academia and industry. At present, common organic electroluminescent devices are mainly composed of electrodes, carrier transport layer and light-emitting layer. The material of hole transport layer is responsible for transferring holes from the anode to the light-emitting layer and occupies a very important position. At present, aromatic amine compounds are mainly used as hole transport materials. These molecules have good hole transport properties and can easily adjust the frontier or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/61C07D333/76C07D307/91C07D345/00C07D307/77C07F7/08C07D209/86C07C211/54C07D333/50C07D421/12C07D409/12C09K11/06H01L51/50H01L51/54
CPCC07C211/61C07D333/76C07D307/91C07D345/00C07D307/77C07F7/0816C07D209/86C07C211/54C07D333/50C07D421/12C07D409/12C09K11/06C09K2211/1007C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1088C09K2211/1092C09K2211/1096H10K85/623H10K85/615H10K85/622H10K85/624H10K85/631H10K85/636H10K85/626H10K85/633H10K85/657H10K85/6576H10K85/6574H10K85/40H10K85/6572H10K50/15
Inventor 何睦王湘成王鹏
Owner 上海钥熠电子科技有限公司
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