Light emitting material, manufacture method thereof and organic light emitting diode using the light emitting material

Patent metadata

Field	Value
Publication number	US-10280365-B2
Application number	US-201615122410-A
Country	US
Kind code	B2
Filing date	Aug 17, 2016
Priority date	Jul 20, 2016
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A light emitting material of the constitutional formula

is provided. The structure is unitary, and the formula weight is determined, and the better solubility and film formation are provided, and the thin film status is stable; it possesses a very high decomposition temperature and a lower sublimation temperature, and is easy to sublime to be light emitting material of high purity, and can be applied for small molecule organic light emitting diode. In a manufacture method of the light emitting material, p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile are employed as starting materials, and the intermediate of the light emitting material is obtained with a series of simple reactions, and finally, the light emitting material is obtained with Ullmann reaction or Suzuki reaction, and the steps are simple and the production is high.

First claim

What is claimed is:

1. A light emitting material of the following constitutional formula:

wherein Ar 1 and Ar 2 are respectively selected from aromatic amine groups shown in formula (1), formula (2), formula (3), formula (4), formula (5), formula (6), formula (7);

2. The light emitting material according to claim 1 , wherein Ar 1 and Ar 2 are the same.

3. The light emitting material according to claim 2 , selected from one of the following compounds:

4. An organic light emitting diode, comprising a substrate, and an anode, a hole injection layer, a hole transporting layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode stacking up on the substrate from bottom to top in order;
the light emitting layer comprises a light emitting material of the following constitutional formula

wherein Ar 1 and Ar 2 are respectively selected from aromatic amine groups shown in formula (1), formula (2), formula (3), formula (4), formula (5), formula (6), formula (7);

5. The organic light emitting diode according to claim 4 , wherein Ar 1 and Ar 2 are the same.

6. The organic light emitting diode according to claim 5 , wherein the light emitting material comprises one or more of following compounds:

Assignees

• Shenzhen China Star Optoelect

Inventors

• Li Xianjie
• Wu Yuanchun
• Su Shijian
• Li Yunchuan

Classifications

• C07D417/14

  containing three or more hetero rings · CPC title

• C09K2211/1037

  with sulfur · CPC title

• C09K11/06 Primary

  containing organic luminescent materials · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C07D339/08

  Six-membered rings · CPC title