Composite hole transport material

A hole transport material and technology for transporting materials, applied in the field of composite hole transport materials, can solve problems such as being unfavorable for making amorphous thin films

Inactive Publication Date: 2003-11-26
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This aromatic triamine with uniform substituents has better symmetry and is easy to crystallize, which is not conducive to the production of amorphous films.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In a nitrogen atmosphere, 6 millimoles of 1,3,5-tris(N-phenylamino)benzene, 60 millimoles of potassium hydroxide, 2.6 grams of active copper powder, and 15 milliliters of n-decane were added to the reaction flask. Then add 30 mmoles of 1-iodonaphthalene, heat and reflux for 12 hours, then add 30 mmoles of iodobenzene, and continue the reaction for 12 hours. After cooling, a solid is obtained, which is washed with methanol and decolorized with activated carbon. The crude product is purified by recrystallization from dichloromethane-methanol, or purified by column chromatography (silica gel G is used as a column, and dichloromethane-petroleum ether or dichloromethane-methanol is used as eluent). The composite aromatic triamine material HT1 is obtained.

Embodiment 2

[0055] In a nitrogen atmosphere, add 6 millimoles of 1,3,5-tris(N-(4-methylphenyl)amino)benzene, 60 millimoles of potassium hydroxide, 2.6 grams of active copper powder, and 15 milliliters to the reaction flask. Diphenyl ether. Then add 20 millimoles of 1-iodonaphthalene and react at 170-190°C for 6 hours, then add 30 millimoles of iodobenzene, and continue the reaction for 18 hours. After cooling, a solid is obtained, which is washed with methanol and decolorized with activated carbon. The crude product is purified by recrystallization from dichloromethane-methanol, or purified by column chromatography (silica gel G is used as a column, and dichloromethane-petroleum ether or dichloromethane-methanol is used as eluent). Obtained composite aromatic triamine material HT2.

Embodiment 3

[0057] Using 1,3,5-tris(N-(3-methylphenyl)amino)benzene as the starting material, first react with 1-iodonaphthalene, and then add iodobenzene to continue the reaction. The reaction conditions and treatment methods are similar to those in Example 1 and Example 2. Obtained composite aromatic triamine material HT3.

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Abstract

The present invention relates to organic functional material and is especially a kind of composite hole transport material. The composite hole transport material is composite aromatic triamine homologues, each of which consists of 2-4 aromatic triamine homologue molecules, and is one kind of mixture with at least a molecule with unbalanced substituting radical. The aromatic triamine compound body of the present invention has excellent hole transferring performance and stability, and may be used in making high performance organic electroluminescent device for planar display.

Description

Technical field [0001] The invention belongs to the technical field of organic functional materials, and specifically relates to a composite hole transport material. technical background [0002] Organic electroluminescent devices are usually composed of an anode, a hole transport layer, a light emitting layer, an electron transport layer, and a cathode ([1] C.W. Tang, S.A. Van Slyke, Appl. Phys. Lett. 1987, 51: 913-915;). As one of the basic components of the light-emitting device, the hole transport layer plays an important role in the performance and lifetime of the light-emitting device. The hole transport layer is formed by forming a film of an organic material capable of transporting hole carriers. Specifically, it can be a single organic molecule film or an organic molecule-polymer medium composite film ([2]S.Shi, F. So, HCLee, US Patent: US5985417). The performance of the hole transport layer is related to factors such as the composition, structure and aggregation morphol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/54C09K11/06H01L33/00
Inventor 徐伟华中一
Owner FUDAN UNIV
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