Polymer, coating composition comprising same, and organic light emitting device using same

Patent metadata

Field	Value
Publication number	US-11706970-B2
Application number	US-201917047261-A
Country	US
Kind code	B2
Filing date	Aug 16, 2019
Priority date	Aug 17, 2018
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

The present specification relates to a polymer including a unit represented by Chemical Formula 1, a coating composition including the same, and an organic light emitting device formed using the same:wherein all the variables are described herein.

First claim

The invention claimed is:

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

wherein, in Chemical Formula 1,
L1 is a direct bond; a substituted or unsubstituted phenylene group; a substituted or unsubstituted naphthylene group; a substituted or unsubstituted biphenylene group; a substituted or unsubstituted divalent fluorenyl group; or a substituted or unsubstituted divalent carbazolyl group;
l1 is an integer of 1 to 10;
Ar1 and Ar2 are the same as or different from each other, and each independently a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group;
R1 to R8 are the same as or different from each other, and each independently hydrogen;
deuterium; a halogen group; a hydroxyl group; a cyano group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group;
r4, r6 and r8 are each independently an integer of 1 to 4;
r5 and r7 are each independently an integer of 1 to 3;
when r4 is 2 or greater, the two or more R4s are the same as or different from each other;
when r5 is 2 or greater, the two or more R5s are the same as or different from each other;
when r6 is 2 or greater, the two or more R6s are the same as or different from each other;
when r7 is 2 or greater, the two or more R7s are the same as or different from each other;
when r8 is 2 or greater, the two or more R8s are the same as or different from each other;
when l1 is 2 or greater, the two or more L1s are the same as or different from each other; and
n is, as a repetition number of the unit, an integer of 1 to 10,000.

2. The polymer of claim 1 , wherein the unit represented by Chemical Formula 1 is represented by the following Chemical Formula 1-1:

in Chemical Formula 1-1,
L1, l1, Ar1, Ar2 and n have the same definitions as in Chemical Formula 1.

3. The polymer of claim 1 , wherein L1 is a direct bond; a phenylene group unsubstituted or substituted with an alkyl group; an unsubstituted naphthylene group; an unsubstituted biphenylene group; a divalent fluorenyl group unsubstituted or substituted with an alkyl group; or a divalent carbazolyl group unsubstituted or substituted with an aryl group.

4. The polymer of claim 1 , wherein Ar1 and Ar2 are the same as or different from each other, and each independently an aryl group unsubstituted or substituted with an unsubstituted aryl group; an aryl group substituted with an unsubstituted heteroaryl group; an aryl group substituted with an alkyl group; an aryl group substituted with an aryl group substituted with an alkyl group; an aryl group substituted with a heteroaryl group substituted with an aryl group; or a heteroaryl group unsubstituted or substituted with an unsubstituted or substituted aryl group.

5. The polymer of claim 1 , wherein the unit represented by Chemical Formula 1 is selected from among the following structures:

in the structures,
n is, as a repetition number of the unit, an integer of 1 to 10,000.

6. The polymer of claim 1 , which has a number average molecular weight of 5,000 g/mol to 1,000,000 g/mol.

7. The polymer of claim 1 , which has molecular weight distribution of 1 to 10.

8. A monomer represented by the following Chemical Formula 2:

wherein, in Chemical Formula 2,
L1 is a direct bond; a substituted or unsubstituted phenylene group; a substituted or unsubstituted naphthylene group; a substituted or unsubstituted biphenylene group; a substituted or unsubstituted divalent fluorenyl group; or a substituted or unsubstituted divalent carbazolyl group;
l1 is an integer of 1 to 10;
Ar1 and Ar2 are the same as or different from each other, and each independently a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group;
R1 to R8 are the same as or different from each other, and each independently hydrogen;
deuterium; a halogen group; a hydroxyl group; a cyano group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group;
r4, r6 and r8 are each independently an integer of 1 to 4;
r5 and r7 are each independently an integer of 1 to 3;
when r4 is 2 or greater, the two or more R4s are the same as or different from each other;
when r5 is 2 or greater, the two or more R5s are the same as or different from each other;
when r6 is 2 or greater, the two or more R6s are the same as or different from each other;
when r7 is 2 or greater, the two or more R7s are the same as or different from each other;
when r8 is 2 or greater, the two or more R8s are the same as or different from each other; and
when l1 is 2 or greater, the two or more L1s are the same as or different from each other.

9. A coating composition comprising the polymer including the unit represented by Chemical Formula 1 of claim 1 .

10. A coating composition comprising the monomer represented by Chemical Formula 2 of claim 8 .

11. An organic light emitting device comprising:
a first electrode;
a second electrode provided opposite to the first electrode; and
at least one organic material layers provided between the first electrode and

Assignees

• Lg Chemical Ltd

Inventors

• Jung Min Suk
• Kang Esder
• Kang Beomgoo
• Bae Jaesoon
• Lee Jaechol
• Shin Jiyeon
• Seo Seog Jae
• Park Hyungil
• Lim Byeong Yun
• Lim Dowon

Classifications

• H10K85/115 Primary

  Polyfluorene; Derivatives thereof · CPC title

• C07C211/61 Primary

  with at least one of the condensed ring systems formed by three or more rings · CPC title

• C07C211/54

  having amino groups bound to two or three six-membered aromatic rings · CPC title

• C07D209/86

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

• C07D209/88

  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