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Diamine derivative for organic electroluminescent device

An electroluminescent device, a technology of diamine derivatives, applied in the field of semiconductors, can solve the problems of short life and high voltage, achieve the effect of improving hole injection efficiency and reducing the risk of Cross-talk

Pending Publication Date: 2021-10-01
JIANGSU SUNERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, aromatic amine compounds are mostly used on the hole transport side, but the devices made of these materials still have the problems of high voltage and short life. Therefore, improving the life of blue light devices and reducing the device voltage are still problems that we need to overcome.

Method used

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  • Diamine derivative for organic electroluminescent device
  • Diamine derivative for organic electroluminescent device
  • Diamine derivative for organic electroluminescent device

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Example 1: Synthesis of Compound 1:

[0039]

[0040] 250ml three-necked flask, under the atmosphere of nitrogen, add 0.01mol raw material A-1, 0.012mol raw material B-1, 0.03mol potassium tert-butoxide, 1×10 -4 mol pd 2 (dba) 3 , 1 × 10 -4 mol triphenylphosphine, 150 ml of toluene, heated to reflux for 12 hours, sampling point plate, the reaction was complete; naturally cooled, filtered, the filtrate was rotary evaporated, passed through a silica gel column to obtain intermediate D-1; elemental analysis structure (molecular formula C 34 H 24 ClN): Theoretical C, 84.72; H, 5.02; N, 7.35; Cl, ​​2.91; found: C, 84.75; H, 5.01; N, 7.34; Cl, ​​2.90. ESI-MS(m / z)(M + ): The theoretical value is 481.16, and the measured value is 481.32.

[0041] In a 250ml three-necked bottle, under a nitrogen atmosphere, add 0.01mol of intermediate D-1, 0.012mol of raw material C-1, 0.03mol of potassium tert-butoxide, 1×10 -4 mol pd 2 (dba) 3 , 1 × 10 -4mol triphenylphosphine, 15...

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Abstract

The invention relates to a diamine derivative for an organic electroluminescent device, and belongs to the technical field of semiconductors. The structure of the diamine derivative is shown in general formula (1). The diamine derivative provided by the invention has relatively strong hole injection capability and relatively excellent hole transport performance, can effectively reduce the driving voltage and turn-on voltage of a device when being applied as a hole transport layer material, also has excellent film phase stability, and can effectively solve the problem of short service life caused by unstable film phase state in a device driving process as a hole transport layer material, .

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a diamine derivative and its application in organic electroluminescence devices. Background technique [0002] Organic electroluminescence (OLED: Organic Light Emission Diodes) device technology can be used to manufacture new display products and new lighting products. The OLED light-emitting device is like a sandwich structure, including electrode material film layers and organic functional materials sandwiched between different electrode film layers. Various functional materials are superimposed on each other according to the purpose to form an OLED light-emitting device. As a current device, when a voltage is applied to the electrodes at both ends of the OLED light-emitting device, the positive and negative charges in the functional material film layer of the organic layer are acted by the electric field, and the positive and negative charges are further combined in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/58C07C211/50C09K11/06H01L51/50H01L51/54
CPCC07C211/58C07C211/50C09K11/06C09K2211/1007C09K2211/1011C09K2211/1014H10K85/626H10K85/633H10K85/631H10K50/15
Inventor 王芳张兆超李崇
Owner JIANGSU SUNERA TECH CO LTD