Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, and organic EL lighting device

Patent metadata

Field	Value
Publication number	US-10270035-B2
Application number	US-201615252427-A
Country	US
Kind code	B2
Filing date	Aug 31, 2016
Priority date	Mar 3, 2014
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

The object of the present invention is to provide a polymer capable of being insolubilized at a low temperature in a short time, having a high hole injecting and transporting ability and a high durability, and a composition for organic electroluminescent element comprising the polymer. The polymer of the present invention comprises a specific crosslinkable group.

First claim

The invention claimed is:

1. A polymer having a crosslinkable group represented by the following formula (1):

wherein the 1,2-dihydrocyclobuta[a]naphthalene ring may have a substituent.

2. The polymer according to claim 1 , which comprises a repeating unit represented by the following formula (2):

wherein p represents an integer of 0 to 3,
Ar 1 and Ar 2 each independently represent a direct bond, an aromatic hydrocarbon group that may have a substituent, or an aromatic heterocyclic group that may have a substituent,
Ar 3 to Ar 5 each independently represent an aromatic hydrocarbon group that may have a substituent, or an aromatic heterocyclic group that may have a substituent, and
the Ar 1 and Ar 2 are not direct bonds at the same time.

3. The polymer according to claim 1 , which comprises a repeating unit represented by the following formula (3):

wherein q represents an integer of 0 to 3,
R 1 represents an alkyl group of 1 to 24 carbon atoms that may have a substituent, an aromatic hydrocarbon group that may have a substituent, or an aromatic heterocyclic group that may have a substituent,
Ar 6 and Ar 7 each independently represents a direct bond, an aromatic hydrocarbon group that may have a substituent, or an aromatic heterocyclic group that may have a substituent,
Ar 8 to Ar 12 each independently represents an aromatic hydrocarbon group that may have a substituent, or an aromatic heterocyclic group that may have a substituent, and
the Ar 6 and Ar 7 are not direct bonds at the same time.

4. The polymer according to claim 1 , which comprises a repeating unit represented by the following formula (4):

wherein r represents an integer of 0 to 3,
Ar 13 , Ar 14 , Ar 16 , and Ar 17 each independently represent an aromatic hydrocarbon group that may have a substituent, or an aromatic heterocyclic group that may have a substituent, and
Ar 15 represents a direct bond, an aromatic hydrocarbon group that may have a substituent, or an aromatic heterocyclic group that may have a substituent.

5. The polymer according to claim 1 , which has a weight-average molecular weight (Mw) of 20,000 or more, and a degree of dispersion (Mw/Mn) of 2.5 or less.

6. A composition for organic electroluminescent element, which comprises the polymer of claim 1 .

7. An organic electroluminescent element comprising a substrate, an anode and a cathode provided on the substrate, and an organic layer provided between the anode and the cathode, wherein the organic layer contains a layer formed by a wet film formation method using the composition for organic electroluminescent elements of claim 6 .

8. The organic electroluminescent element according to claim 7 , wherein the layer formed by a wet film formation method is at least one of a hole injection layer and a hole transport layer.

9. The organic electroluminescent element according to claim 7 , which comprises a hole injection layer, a hole transport layer and a light-emitting layer between the anode and the cathode, wherein the hole injection layer, the hole transport layer, and the light-emitting layer are all formed by a wet film formation method.

10. An organic EL display device comprising the organic electroluminescent element of claim 7 .

11. An organic EL lighting device comprising the organic electroluminescent element of claim 7 .

12. A compound represented by the following formula (5):

wherein X represents a halogen atom.

Assignees

• Mitsubishi Chem Corp

Inventors

• Iida Koichiro
• Li Yanjun
• Umemoto Tomokazu
• Gao Qi
• Goromaru Hideki

Classifications

• C07C2603/08

  containing three- or four-membered rings · CPC title

• C07C2602/06

  the other ring being four-membered · CPC title

• C07C39/17

  containing other rings in addition to the six-membered aromatic rings {, e.g. cyclohexylphenol} · CPC title

• C07C25/02

  Monocyclic aromatic halogenated hydrocarbons · CPC title

• C07C211/45

  Monoamines · CPC title