Organic electroluminescent material and device

Patent metadata

Field	Value
Publication number	US-11739110-B2
Application number	US-201916675195-A
Country	US
Kind code	B2
Filing date	Nov 5, 2019
Priority date	Nov 5, 2019
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A compound having a first ligand of the following

is described. Ring A represents a monocyclic aromatic group or a polycyclic aromatic group. Ring B represents a polycyclic aromatic group. Z is a carbon. Z and the right N are coordinated to a metal to form a five-membered chelate ring. R 1 and R 2 independently represent mono to a maximum possible number of substitutions, or no substitution.

First claim

What is claimed is:

1. A compound comprising a first ligand of the following formula:

2. The compound of claim 1 , wherein the second ligand is a bidentate ligand of the following formula:

or a tautomer thereof;
wherein G 1 represents a hetero-monocyclic aromatic group or a hetero-polycyclic aromatic group having N as the heteroatom;
wherein G 2 represents a carbo-monocyclic aromatic group or a carbo polycyclic aromatic group;
wherein R 16 and R 17 independently represent mono to a maximum possible number of substitutions, or no substitution; and

wherein each of R 16 or R 17 substitutions are independently selected from the group consisting of halogen, alkyl, alkoxy, aralkyl, heteroaryl, and combinations thereof.

3. The compound of claim 2 , wherein the second ligand is a bidentate ligand having one of the following formulae:

wherein R 3 to R 15 independently represent mono, di, tri, tetra, penta, or hexa substitutions, or no substitution; and
wherein each of R 3 to R 15 substitutions are independently selected from the group consisting of halogen, alkyl, alkoxy, aralkyl, heteroaryl, and combinations thereof.

4. The compound of claim 3 , wherein each of R 3 to R 15 is independently selected from the group consisting of hydrogen, alkyl having 30 or fewer carbon atoms, alkoxy having 30 or fewer carbon atoms, aryl having 30 or fewer carbon atoms, aralkyl having 30 or fewer carbon atoms, heteroaryl having 30 or fewer carbon atoms, and combinations thereof.

5. The compound of claim 4 , wherein each of R 3 to R 15 substitutions are independently selected from the group consisting of a halogen, a methyl group, an isopropyl group, an isobutyl group, a cyclopentyl group, a hexyl group, a cyclohexyl group, a phenyl group, and combinations thereof.

6. The compound of claim 1 , wherein the compound is selected from the group consisting of:

7. An organic electroluminescence device comprising a cathode, an anode and one or more organic layers formed between the anode and the cathode, wherein at least one of the organic layers comprises the compound of claim 1 .

8. The organic electroluminescence device of claim 7 , wherein the compound is comprised as a phosphorescent dopant material.

9. The organic electroluminescence device of claim 7 , wherein the one of the organic layers comprising the compound is an emissive layer emitting green, yellow or red phosphorescence.

10. The organic electroluminescence device of claim 7 , wherein the organic electroluminescence device is a panel free of blue wavelengths.

11. The organic electroluminescence device of claim. 7 , wherein the organic electroluminescence device is a lighting panel.

12. The organic electroluminescence device of claim 7 , wherein the organic electroluminescence device is a backlight panel.

13. An organic electroluminescence device comprising a cathode, an anode and one or more organic layers formed between the anode and the cathode, wherein at least on

Assignees

• Yen Feng Wen
• Huang Tsun Yuan
• Luminescence Tech Corp

Inventors

• Yen Feng-Wen
• Huang Tsun-Yuan

Classifications

• C07F15/0033 Primary

  Iridium compounds · CPC title

• C07D209/88 Primary

  with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system · CPC title

• C07C257/18

  having carbon atoms of amidino groups bound to carbon atoms of six-membered aromatic rings · CPC title

• C07D213/78

  Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals · CPC title

• C07D217/26

  Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen · CPC title