Electroluminscent material containing carbonyl group, and application thereof to OLED

Patent metadata

Field	Value
Publication number	US-12075698-B2
Application number	US-201817048373-A
Country	US
Kind code	B2
Filing date	Oct 25, 2018
Priority date	Apr 16, 2018
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

The disclosure belongs to the technical field of organic photoelectric materials, and discloses carbonyl containing organic electroluminescent materials and use thereof in OLED. The carbonyl containing organic electroluminescent materials have a structure of formula I, wherein R1 and R2 are different in Formula I, R1 and R2 are different electron-donating groups of aromatic ring derivatives; R1 is an electron-donating groups of hole transport host materials or electron-donating groups of bipolar transport host materials. The luminescent materials of the present disclosure are organic electroluminescent materials based on derivatives of a host material and a benzoyl group. They have both AIE and delayed fluorescence characteristics with high-efficiency solid-state emission, high exciton utilization, and bipolar features. The organic electroluminescent device prepared by the organic electroluminescent materials of the present disclosure has very good performance and broad application prospect in the field of organic electroluminescence.

First claim

The invention claimed is:

1. A carbonyl containing organic electroluminescent material having one of the following structures:

2. A method of preparing the carbonyl containing organic electroluminescent material according to claim 1 , comprising the following steps:
using p-fluorobenzoyl chloride and an aromatic derivative R 1 H as raw materials, obtaining organic fluoride through a Friedel-Crafts reaction; and
under the action of a strong base catalyst, carrying out a reaction between the organic fluoride and an aromatic derivative R 2 H to obtain the carbonyl containing organic electroluminescent material,
wherein R 1 H has one of the following structures:

 and
wherein R 2 H has the following structure:

3. The carbonyl containing organic electroluminescent material according to claim 1 , wherein the material has the following structure:

4. The carbonyl containing organic electroluminescent material according to claim 1 , wherein the material has the following structure:

5. The carbonyl containing organic electroluminescent materials according to claim 1 , wherein the material has the following structure:

6. The carbonyl containing organic electroluminescent material according to claim 1 , wherein the material has the following structure:

7. An organic electroluminescent device comprising the carbonyl containing organic electroluminescent material of claim 1 .

Assignees

• Univ South China Tech

Inventors

• Tang Ben Zhong
• Zhao Zujin
• Liu Huijun
• Qin Anjun
• Hu Rongrong
• Wang Zhiming

Classifications

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• H10K85/657

  Polycyclic condensed heteroaromatic hydrocarbons · CPC title

• H10K85/636

  comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom · CPC title

• C09K2211/1018

  Heterocyclic compounds · CPC title

• C09K2211/1007

  Non-condensed systems · CPC title