# US 8,541,525 B2 · Compound comprising phenyl pyridine units

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- Number: US 8,541,525 B2
- Document ID: US8541525B2
- Status: Granted
- Kind: B2
- Application number: 13/056,539
- Filed: 2009-07-09
- Published: 2011-08-25
- Granted: 2013-09-24
- Earliest claimed: 2008-08-07
- Assignees: General Electric Company
- Applicants: Qing Ye; Jie Liu
- Inventors: Qing Ye; Jie Liu
- Web page: https://patentgrep.com/patent/US8541525B2

## CPC

- C07F 5/027: {Organoboranes and organoborohydrides}
- H10K 85/151: {Copolymers}
- H10K 85/658: {Organoboranes}
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 50/14: Carrier transporting layers
- H10K 50/171: {Electron injection layers}
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Polymers comprising structural units derived from compounds of formula I may be used in optoelectronic devices wherein R1 is independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; and a is independently at each occurrence 0, or an integer ranging from 1 to 4.

## Claims

### Claim 1

A compound of formula I:
wherein
R1 is independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; and
a is independently at each occurrence 0, or an integer ranging from 1 to 4.

### Claim 2 (depends on 1)

The compound of claim 1, having chemical formula II

### Claim 3

A polymer comprising structural units derived from a compound of formula I
wherein
R1 is independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; and
a is independently at each occurrence 0, or an integer ranging from 1 to 4.

### Claim 4 (depends on 3)

The polymer of claim 3, additionally comprising structural units of formula

### Claim 5

A polymer comprising structural units derived from a compound of formula II

### Claim 6 (depends on 5)

The polymer of claim 5, additionally comprising structural units of formula

### Claim 7

An optoelectronic device comprising a polymer comprising structural units derived from formula I
wherein
R1 is independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; and
a is independently at each occurrence 0, or an integer ranging from 1 to 4.

### Claim 8 (depends on 7)

The optoelectronic device of claim 7, wherein the polymer additionally comprises structural units of formula

### Claim 9 (depends on 7)

The optoelectronic device of claim 7, wherein the optical electronic device is a single layer OLED.

### Claim 10 (depends on 9)

The optoelectronic device of claim 9, further comprising at least one blue, yellow, orange, green or red phosphorescent dye.

### Claim 11

An optoelectronic device comprising a polymer having structural units derived from a compound of formula II

### Claim 12 (depends on 11)

The optoelectronic device of claim 11, wherein the polymer additionally comprises structural units of formula