Polymer comprising an unsymmetric diarylaminofluoren unit

Patent metadata

Field	Value
Publication number	US-10580992-B2
Application number	US-201715819811-A
Country	US
Kind code	B2
Filing date	Nov 21, 2017
Priority date	Jan 16, 2012
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

A polymer comprising one or more optionally substituted repeat units of formula (I):

wherein each Ar 1 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; each Ar 2 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; n and m in each occurrence is at least 1; and R 1 and R 2 are substituents wherein R 1 and R 2 are different.

First claim

The invention claimed is:

1. A monomer of formula (II):

wherein each Ar 1 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; each Ar 2 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; n and m in each occurrence is at least 1; R 1 and R 2 are substituents, wherein R 1 and R 2 are different, wherein R 1 is bound to the fluorene ring through an sp 2 -hybridised carbon atom and R 2 is bound to the fluorene unit through an sp 3 -hybridised carbon atom; and each L represents a reactive leaving group.

2. The monomer according to claim 1 , wherein each L is a group capable of participating in a metal-mediated cross-coupling reaction.

3. The monomer according to claim 2 , wherein each L is independently selected from the group consisting of halogen; boronic acids and esters thereof; and sulfonic acid esters.

4. A method of forming a polymer comprising one or more unsubstituted or substituted repeat units of formula (I):

wherein each Ar 1 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; each Ar 2 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; n and m in each occurrence is at least 1; and R 1 and R 2 are substituents, wherein R 1 and R 2 are different, wherein R 1 is bound to the fluorene ring through an sp 2 -hybridised carbon atom and R 2 is bound to the fluorene unit through an sp 3 -hybridised carbon atom;
the method comprising the step of polymerising a monomer of claim 1 .

5. The method according to claim 4 , wherein the polymerisation is carried out in the presence of a metal catalyst.

6. The method according to claim 5 , wherein the metal catalyst is selected from nickel and palladium catalysts.

Assignees

• Sumimoto Chemical Company Ltd
• Cambridge Display Tech Ltd
• Sumitomo Chemical Co

Inventors

• Pegington Ruth
• Heidenhain Sophie Barbara
• Mckiernan Mary J

Classifications

• C09K2211/1433

  bridged by heteroatoms, e.g. N, P, Si or B · CPC title

• C07C2603/18

  Fluorenes; Hydrogenated fluorenes · CPC title

• C08G2261/512

  Hole transport · CPC title

• C08G2261/1412

  Saturated aliphatic units · CPC title

• C09K2211/1011

  Condensed systems · CPC title