Polymer and organic light emitting device comprising the same

Patent metadata

Field	Value
Publication number	US-12054565-B2
Application number	US-201916652899-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Jul 31, 2018
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

The present invention provides a novel polymer and an organic light emitting device including the same.

First claim

The invention claimed is:

1. A polymer including a repeating unit represented by the following Chemical Formula 1, a repeating unit represented by the following Chemical Formula 2, and a repeating unit represented by the following Chemical Formula 3:

in Chemical Formula 1,
R 1 to R 3 are each independently hydrogen, or a C 1-10 alkyl,
L 1 is a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing one or more selected from the group consisting of N, O and S,
L 2 is a single bond; a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing one or more selected from the group consisting of N, O and S,
Ar 1 is a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 2-60 heteroaryl containing one or more selected from the group consisting of N, O and S,
Ar 2 and Ar 3 are each independently a substituted or unsubstituted C 1-60 alkoxy, a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 2-60 heteroaryl containing one or more selected from the group consisting of N, O and S, and
x is a molar ratio of the repeating unit of Chemical Formula 1,

in Chemical Formula 2,
R 4 to R 6 are each independently hydrogen, or a C 1-10 alkyl,
L 3 is a single bond; a substituted or unsubstituted C 6-60 arylene; (substituted or unsubstituted C 6-60 arylene)—O—; (substituted or unsubstituted C 6-60 arylene)-O—(substituted or unsubstituted C 1-60 alkylene); or a substituted or unsubstituted C 2-60 heteroarylene containing one or more selected from the group consisting of N, O and S, and
y is a molar ratio of the repeating unit of Chemical Formula 2,

in Chemical Formula 3,
R 7 to R 9 are each independently hydrogen, or a C 1-10 alkyl,
L 4 is a single bond; a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing one or more selected from the group consisting of N, O and S,
Ar 4 is a substituted or unsubstituted C 3-60 cycloalkyl, a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 2-60 heteroaryl containing one or more selected from the group consisting of N, O and S,
Ar 5 is hydrogen, or a substituted or unsubstituted C 6-60 aryl, and
z is a molar ratio of the repeating unit of Chemical Formula 3,
n is an integer of 0 to 5.

2. The polymer according to claim 1 , wherein
x:y:z is 0.5˜0.9:0.05˜0.45:0.05˜0.45.

3. The polymer according to claim 1 , wherein
L 1 is phenylene, or biphenylylene.

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

5. The polymer according to claim 1 , wherein
Ar 1 is phenyl, biphenylyl, dimethylfluorenyl, or diphenylfluorenyl, unsubstituted or substituted with methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tertbutyl, methoxy, ethoxy, propoxy, butoxy, isobutoxy, or neobutoxy.

6. The polymer according to claim 1 , wherein
Ar 2 and Ar 3 are each independently phenyl, biphenylyl, dimethylfluorenyl, or diphenylfluorenyl.

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

8. The polymer according to claim 1 , wherein L 3 is a single bond, phenylene, -(phenylene)-O—, -(phenylene)-O—(butane-1,4-diyl), or biphenylylene.

9. The polymer according to claim 1 , wherein
the Chemical Formula 2 is selected from the group consisting of repeating units represented by the following:

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

11. The polymer according to claim 1 , wherein
Ar 4 is cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, phenyl, phenyl substituted with one or two C 1-4 alkyl, or biphenylyl.

12. The polymer according to claim 1 , wherein
Ar 5 is hydrogen, phenyl, biphenylyl, terphenylyl, or quarterphenylyl.

13. The polymer according to claim 1 , wherein
the Chemical Formula 3 is any one selected from the group consisting of repeating units represented by the following:

wherein TMS means trimethylsilyl and t-Bu means tert-butyl.

14. The polymer according to claim 1 , wherein
the weight average molecular weight of the polymer is 5,000 to 1,000,000.

15. An organic light emitting device comprising an anode; a cathode provided opposite to the anode; a light emitting layer provided between the anode and the cathode; and a hole transport layer provided between the anode and the light emitting layer, wherein the hole transport layer includes the polymer accordin

Assignees

• Lg Chemical Ltd

Inventors

• Kang Esder
• Bae Jaesoon
• Lee Jaechol
• Shin Jiyeon
• Kang Beomgoo
• Seo Minseob
• Park Hyungil

Classifications

• C08F212/28 Primary

  Amines · CPC title

• H10K85/633

  comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom · CPC title

• H10K85/151

  Copolymers · CPC title

• H10K85/141

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

• H10K85/115

  Polyfluorene; Derivatives thereof · CPC title