Fluorene derivative and organic light emitting device comprising same

Patent metadata

Field	Value
Publication number	US-11542237-B2
Application number	US-201816629296-A
Country	US
Kind code	B2
Filing date	Jul 23, 2018
Priority date	Jul 28, 2017
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

Provided is a fluorene derivative of Chemical Formula 1:

and an organic light emitting device comprising the same.

First claim

The invention claimed is:

1. A fluorene derivative of any one of Chemical Formulae 7 to 9:

wherein:
L1 is a direct bond, a naphthylene group, or a phenylene group that is unsubstituted or substituted by an alkyl group;
L3 is a direct bond, a phenylene group, a biphenylene group, a naphthylene group, a phenanthrene group, a divalent fluorene group that is unsubstituted or substituted by an alkyl group, or a divalent fluorene group that is unsubstituted or substituted by an aryl group;
L5 is a phenylene group, a biphenylene group, a naphthylene group, a phenanthrene group, a divalent fluorene group that is unsubstituted or substituted by an alkyl group, or a divalent fluorene group that is unsubstituted or substituted by an aryl group;
Ar2 and Ar4 are hydrogen;
b and d are each 5;
X1 to X3 are identical to or different from one another, and are each independently N or CR1, wherein two or more of X1 to X3 are N;
R1 and R2 are identical to or different from one another, and are each independently hydrogen or deuterium;
Y1 and Y2 are identical to or different from one another, and are each independently hydrogen, deuterium, or an aryl group having 6 to 20 atoms that is unsubstituted or substituted with an alkyl group;
n is an integer of 0 to 4, in which, when n is 2 or more, R2 are identical to or different from each other;
m is 1.

2. The fluorene derivative of claim 1 , wherein Y1 or Y2 is an aryl group having 6 to 20 carbon atoms.

3. A fluorene derivative selected from among the following compounds:

4. An organic light emitting device comprising:
a first electrode;
a second electrode facing the first electrode; and
at least one organic material layer interposed between the first electrode and the second electrode,
wherein the at least one organic material layer comprises the fluorene derivative of claim 1 .

5. The organic light emitting device of claim 4 , wherein the organic material layer comprises a light emitting layer,
wherein the light emitting layer comprises the fluorene derivative.

6. The organic light emitting device of claim 4 , wherein the organic material layer comprises a hole injection layer or a hole transport layer,
wherein the hole injection layer or the hole transport layer comprises the fluorene derivative.

7. The organic light emitting device of claim 4 , wherein the organic material layer comprises an electron injection layer, an electron transport layer, or an electron injection and transport layer,
wherein the electron injection layer, the electron transport layer, or the electron injection and transport layer comprises the fluorene derivative.

8. The fluorene derivative of claim 1 , wherein L1 is each independently a naphthylene group or a phenylene group that is unsubstituted or substituted by an alkyl group having 1 to 10 carbon atoms.

9. The fluorene derivative of claim 1 , wherein Y1 and Y2 are identical to or different from one another, and are each independently a biphenyl group or a phenyl group that is unsubstituted or substituted by an alkyl group having 1 to 10 carbon atoms.

10. An organic light emitting device comprising:
a first electrode;
a second electrode facing the first electrode; and
at least one organic material layer interposed between the first electrode and the second electrode,
wherein the at least one organic material layer comprises the fluorene derivative of claim 5 .

11. The organic light emitting device of claim 10 , wherein the organic material layer comprises a light emitting layer, and the light emitting layer comprises the fluorene derivative.

12. The organic light emitting device of claim 10 , wherein the organic material layer comprises a hole injection layer or a hole transport layer, and the hole injection layer or the hole transport layer comprises the fluorene derivative.

13. The organic light emitting device of claim 10 , wherein the organic material layer comprises an electron injection layer, an electron transport layer, or an electron injection and transport layer, and the electron injection layer, the electron transport layer, or the electron injection and transport layer comprises the fluorene derivative.

Assignees

• Lg Chemical Ltd

Inventors

• Han Miyeon
• Lee Dong Hoon
• Huh Jungoh
• Jang Boonjae
• Heo Dong Uk
• Yang Junghoon
• Yun Heekyung

Classifications

• C07D251/14 Primary

  with hydrogen or carbon atoms directly attached to at least one ring carbon atom · CPC title

• C07D239/26 Primary

  with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms · CPC title

• C07D251/24 Primary

  to three ring carbon atoms · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• H01L51/5056

  Electricity · mapped topic