Polymer and organic light emitting device comprising same

Patent metadata

Field	Value
Publication number	US-11987665-B2
Application number	US-202117203143-A
Country	US
Kind code	B2
Filing date	Mar 16, 2021
Priority date	Nov 13, 2018
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

The present invention provides a novel polymer comprising repeating unit represented by the following Chemical Formula 1, and an organic light emitting device including the same:

Wherein L 1 , L 2 , Ar 1 , Ar 2 , Ar 3 , R 1 to R 8 , o, p and n are described herein.

First claim

The invention claimed is:

1. A polymer comprising a repeating unit represented by the following Chemical Formula 1:

wherein, in Chemical Formula 1,
L 1 is C 4 H 8 —, —C 5 H 10 —, —C 6 H 12 —, —OC 4 H 8 —, —OC 5 H 10 —, —OC 6 H 12 —, —(OC 2 H 4 ) 2 —, —(OC 2 H 4 ) 3 —, —O(C 2 H 4 )O(C 3 H 6 )O(C 2 H 4 )—, —C 4 F 8 —, —C 5 F 10 —, —C 6 F 12 —, —OC 4 F 8 —, —OC 5 F 10 —, —OC 6 F 12 —, —(OC 2 F 4 ) 2 — or —(OC 2 F 4 ) 3 —,
L 2 is a single bond or a substituted or unsubstituted C 6-60 arylene,
each Ar 1 is independently hydrogen, C 1-10 alkyl, or a substituted or unsubstituted C 6-60 aryl,
Ar 2 and Ar 3 are each independently a substituted or unsubstituted C 6-60 aryl,
R 1 , R 2 and R 3 are each independently hydrogen or C 1-10 alkyl,
each R 4 is independently hydrogen or halogen,
R 5 and R 6 are hydrogen or are linked together to form a single bond,
R 7 and R 8 are hydrogen or are linked together to form a single bond, with the proviso that the case where both R 5 and R 6 , and R 7 and R 8 are linked together to form a single bond is excluded,
o is an integer from 0 to 4,
p is an integer from 0 to 4, and
n is 0 or 1.

2. The polymer according to claim 1 , wherein
the polymer has a weight average molecular weight of 5,000 to 500,000.

3. The polymer according to claim 1 , wherein
the repeating unit represented by Chemical Formula 1 is any one selected from repeating units represented by the following Chemical Formulas 2 to 4:

4. The polymer according to claim 1 , wherein
L 2 is a single bond, phenylene, or biphenylylene.

5. The polymer according to claim 1 , wherein
Ar 2 and Ar 3 are each independently phenyl, biphenylyl, dimethylfluorenyl, or diphenylfluorenyl unsubstituted or substituted with methyl, ethyl, propyl, isopropyl, butyl, isobutyl or tertbutyl.

6. The polymer according to claim 1 , wherein
R 1 , R 2 and R 3 are each independently hydrogen or methyl.

7. The polymer according to claim 1 , wherein
R 4 is hydrogen or fluoro.

8. The polymer according to claim 1 , wherein
the Chemical Formula 1 is any one selected from the group consisting of repeating units represented by the following:

9. An organic light emitting device comprising a first electrode; a second electrode that is disposed opposite to the first electrode; and one or more organic material layers that are disposed between the first electrode and the second electrode, wherein the one or more organic material layers include the polymer according to claim 1 .

10. The organic light emitting device according to claim 9 , wherein
the one or more organic material layers including the polymer are selected from a hole injection layer or a hole transport layer.

11. The organic light emitting device according to claim 9 , wherein the polymer comprises a repeating unit represented by any one selected from the group consisting of repeating units represented by the following:

12. The polymer according to claim 1 , wherein
Ar1 is independently hydrogen, methyl, or phenyl.

Assignees

• Lg Chemical Ltd

Inventors

• Seo Seog Jae
• Bae Jaesoon
• Kang Esder
• Kim Daeho
• Lee Keunsoo
• Kang Beomgoo
• Jung Min Suk
• Lee Jaechol

Classifications

• H10K85/141

  comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE · CPC title

• H10K50/17

  Carrier injection layers · CPC title

• C08F12/26 Primary

  Nitrogen · CPC title

• C08F12/32 Primary

  containing two or more rings · CPC title

• C08G61/04 Primary

  only aliphatic carbon atoms · CPC title