# US 2014/0155622 A1 · Indolocarbazole derivative and organic electroluminescence device including the same

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- Number: US 2014/0155622 A1
- Document ID: US20140155622A1
- Status: Published application
- Kind: A1
- Application number: 14/089,981
- Filed: 2013-11-26
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Xiulan JIN
- Web page: https://patentgrep.com/patent/US20140155622A1

## CPC

- H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole}
- C07D 487/04: Ortho-condensed systems
- C07D 519/00: Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
- C09K 11/06: containing organic luminescent materials
- H05B 33/14: characterised by the chemical or physical composition or the arrangement of the electroluminescent material {, or by the simultaneous addition of the electroluminescent material in or onto the light source}
- C09K 2211/1029: containing one nitrogen atom as the heteroatom
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 85/324: {comprising aluminium, e.g. Alq3}
- H10K 85/654: {comprising only nitrogen as heteroatom (H10K85/652 takes precedence)}
- H10K 2102/103: {comprising indium oxides, e.g. ITO}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

An indolocarbazole derivative and an organic electroluminescence device, the indolocarbazole derivative having a structure represented by A-L-B, wherein A and B are each independently an indolocarbazolyl group represented by one of Formulae (1) to (6), below:

## Claims

### Claim 1

An indolocarbazole derivative having a structure represented by A-L-B, wherein A and B are each independently an indolocarbazolyl group represented by one of Formulae (1) to (6), below:
wherein, L is a connecting part and is selected from a single bond, an arylene group, or a heteroarylene group,
Ar1 to Ar12 are each independnetly a substituted or unsubstituted aryl or heteroaryl group, and
each R is independently hydrogen, an alkyl group, an aryl group, a heteroaryl group having less than or equal to 20 carbon atoms, or the connecting part L.

### Claim 2 (depends on 1)

The indolocarbazole derivative as claimed in claim 1, wherein:
the indolocarbazole group A is represented by one of Formulae (1) to (6) and the indolocarbazole group B is represented by a different one of Formulae (1) to (6), and
the indolocarbazole derivative has an asymmetric structure.

### Claim 3 (depends on 1)

The indolocarbazole derivative as claimed in claim 1, wherein, when the indolocarbazolyl group A and the indolocarbazolyl group B are each independently represented by one of Formulae (1) to (6):
a kind of An to Ar12 of the indolocarbazole group A is different from a kind of Ar1 to Ar12 of the indolocarbazole group B,
a number and/or a kind of R of the indolocarbazole group A is different from a number and/or a kind of R of the indolocarbazole group B, or
a binding site of the connecting part L to the indolocarbazole group A is different from a binding site of the connecting part L to the indolocarbazole group B.

### Claim 4 (depends on 3)

The indolocarbazole derivative as claimed in claim 3, wherein the connecting part L is the single bond.

### Claim 5 (depends on 4)

The indolocarbazole derivative as claimed in claim 4, wherein at least one end of the single bond is bound to a benzene ring included in an indolocarbazole skeleton of the indolocarbazolyl group A or the indolocarbazolyl group B.

### Claim 6 (depends on 5)

The indolocarbazole derivative as claimed in claim 5, wherein both ends of the single bond are bound to benzene rings respectively included in the indolocarbazole skeletons of the indolocarbazolyl group A and the indolocarbazolyl group B.

### Claim 7 (depends on 1)

The indolocarbazole derivative as claimed in claim 1, wherein the connecting part L is the single bond.

### Claim 8

An organic electroluminescence device comprising an emission layer, the emission layer including an indolocarbazole derivative having a structure represented by A-L-B, wherein A and B are each independently an indolocarbazolyl group represented by one of Formulae (1) to (6), below:
wherein, L is a connecting part and is selected from a single bond, an arylene group, or a heteroarylene group,
Ar1 to Ar12 are each independnetly a substituted or unsubstituted aryl or heteroaryl group, and
each R is independently hydrogen, an alkyl group, an aryl group, a heteroaryl group having less than or equal to 20 carbon atoms, or the connecting part L.

### Claim 9 (depends on 8)

The organic electroluminescence device as claimed in claim 8, wherein:
the indolocarbazole group A is represented by one of Formulae (1) to (6) and the indolocarbazole group B is represented by a different one of Formulae (1) to (6), and
the indolocarbazole derivative has an asymmetric structure.

### Claim 10 (depends on 8)

The organic electroluminescence device as claimed in claim 8, wherein, when the indolocarbazolyl group A and the indolocarbazolyl group B are each independently represented by one of Formulae (1) to (6):
a kind of Ar1 to Ar12 of the indolocarbazole group A is different from a kind of Ar1 to Ar12 of the indolocarbazole group B,
a number and/or a kind of R of the indolocarbazole group A is different from a number and/or a kind of R of the indolocarbazole group B, or
a binding site of the connecting part L to the indolocarbazole group A is different from a binding site of the connecting part L to the indolocarbazole group B.

### Claim 11 (depends on 10)

Then organic electroluminescence device as claimed in claim 10, wherein the connecting part L is the single bond.

### Claim 12 (depends on 11)

The organic electroluminescence device as claimed in claim 11, wherein at least one end of the single bond is bound to a benzene ring included in an indolocarbazole skeleton of the indolocarbazolyl group A or the indolocarbazolyl group B.

### Claim 13 (depends on 12)

The organic electroluminescence device as claimed in claim 12, wherein both ends of the single bond are bound to benzene rings respectively included in the indolocarbazole skeletons of the indolocarbazolyl group A and the indolocarbazolyl group B.

### Claim 14 (depends on 8)

The organic electroluminescence device as claimed in claim 8, wherein the connecting part L is the single bond.