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

Patent metadata

Field	Value
Publication number	US-10961447-B2
Application number	US-202016737913-A
Country	US
Kind code	B2
Filing date	Jan 9, 2020
Priority date	Jul 20, 2016
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A method for manufacturing 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 the method for manufacturing the light emitting material, p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile are employed to be starting materials, and an 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 these steps are simple and the production is high.

First claim

What is claimed is:

1. A method for manufacturing a light emitting material, comprising the following steps:
Step 1, manufacturing an intermediate

Step 2, obtaining a light emitting material with an Ullmann reaction or Suzuki reaction of the intermediate

and an aromatic amine compound, wherein the light emitting material is of the following constitutional formula:

where 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), and formula (7):

wherein Ar 1 and Ar 2 are the same;
wherein the light emitting material is selected from the following compound:

wherein Step 1 comprises:
Step 11, obtaining

with a reaction of p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile;
Step 12, hydrolyzing

in an alkaline condition, and
acidizing the same to obtain

Step 13, subjecting

to a dehydration condensation reaction to obtain

and
Step 14, obtaining the intermediate

with a reaction of

and hydrogen peroxide.

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

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

Classifications

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C07D417/14

  containing three or more hetero rings · CPC title

• C07D409/14 Primary

  containing three or more hetero rings · CPC title

• C09K11/06 Primary

  containing organic luminescent materials · CPC title

• C07D335/16

  Oxygen atoms, e.g. thioxanthones · CPC title