A seven-membered nitrogen-containing heterocyclic derivative and its organic electroluminescent device

A technology of derivatives and nitrogen heterocycles, which is applied in the field of seven-membered nitrogen-containing heterocycle derivatives and their organic electroluminescent devices, can solve the problems of device performance degradation, achieve reduced conjugation range, good film-forming properties, The effect of good performance

Active Publication Date: 2021-04-02
CHANGCHUN HYPERIONS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the hole mobility of the hole transport material in the device is generally much greater than the electron mobility of the electron transport material, this will lead to a decrease in device performance

Method used

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  • A seven-membered nitrogen-containing heterocyclic derivative and its organic electroluminescent device
  • A seven-membered nitrogen-containing heterocyclic derivative and its organic electroluminescent device
  • A seven-membered nitrogen-containing heterocyclic derivative and its organic electroluminescent device

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preparation example Construction

[0047] The preparation of the seven-membered nitrogen-containing heterocyclic derivatives of the present invention, first, using iminostilbene (Y1) as a raw material, produces intermediate A through Buchwald-hartwing reaction with dibromoiodobenzene (X); then, the intermediate Body A is prepared by ring-forming reaction to obtain intermediate B; afterward, intermediate B reacts with biboronic acid pinacol ester to prepare intermediate C; finally, intermediate C and bromide Y2 occur Suzuki reaction to prepare target compound (I ), the specific synthetic route is as follows,

[0048]

[0049] Wherein, said L is selected from single bonds and arylene groups with 6 to 12 carbon atoms,

[0050] Said X 1 、X 2 、X 3 independently selected from CH or nitrogen atoms,

[0051] The Ar 1 、Ar 2 Independently selected from one of aryl groups with 6 to 30 carbon atoms and heteroaryl groups with 3 to 20 carbon atoms, the heteroaryl groups contain at least one of oxygen atom, sulfur at...

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Abstract

The invention provides a seven-membered nitrogen-containing heterocyclic derivative and an organic electroluminescence device thereof, which relate to the technical field of organic photoelectric materials. The compound connects a seven-membered nitrogen-containing heterocyclic group derived from triphenylamine containing a double bond to a six-membered conjugated ring containing at least one nitrogen atom. First, the seven-membered nitrogen-containing heterocyclic ring has a large steric hindrance, and the compound The thermal stability of the compound is good; the seven-membered nitrogen-containing heterocyclic ring is connected with a six-membered conjugated ring containing at least one nitrogen atom, so that the compound has enhanced electron-absorbing ability and good electron transport ability when an appropriate voltage is applied; the seven-membered nitrogen-containing heterocycle The intermolecular aggregation of nitrogen heterocyclic derivatives is small, and the film-forming property is good. The compound is used as an electron transport layer material and a light-emitting layer host material in organic electroluminescent devices, which can reduce the driving voltage of the device, and can also significantly improve the luminous efficiency and life of the device. It is a kind of organic electroluminescent device with excellent performance Material.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a seven-membered nitrogen-containing heterocyclic derivative and an organic electroluminescence device thereof. Background technique [0002] After entering the 21st century, people have higher and higher requirements for the performance of flat-panel displays, and the future trend is to transmit a large amount of information and images on light and flexible bodies. The application of LED in flat panel display has gone through decades, but due to its own insurmountable defects, for example, it needs epitaxial growth on a single crystal substrate, and the pixel pitch at the connection between modules is uneven, resulting in display The overall picture of the screen produces a block-cut image. [0003] In contrast, organic electroluminescent devices (OLEDs), compared with LEDs, have good performance in temperature adaptability, response time, video characte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D487/06H01L51/54H01L51/50
CPCC07D487/06H10K85/622H10K85/636H10K85/626H10K85/633H10K85/631H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/16H10K50/11
Inventor 周雯庭孙月邵钰杰
Owner CHANGCHUN HYPERIONS TECH CO LTD
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