# US 2014/0155601 A1 · Hole transport material for organic electroluminescence device and organic electroluminescence device including the same

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- Number: US 2014/0155601 A1
- Document ID: US20140155601A1
- Status: Published application
- Kind: A1
- Application number: 14/091,472
- Filed: 2013-11-27
- 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/US20140155601A1

## CPC

- H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole}
- C07D 405/14: containing three or more hetero rings
- C07D 409/12: linked by a chain containing hetero atoms as chain links
- C07D 409/14: containing three or more hetero rings
- H10K 85/636: {comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom}
- H10K 85/653: {comprising only oxygen as heteroatom}
- H10K 85/654: {comprising only nitrogen as heteroatom (H10K85/652 takes precedence)}
- H10K 85/6576: {comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene}
- H10K 50/15: Hole transporting layers
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)

## Abstract

A hole transport material for an organic electroluminescence (EL) device, and an EL device including the same, the hole transport material being represented by Formula 1, below:

## Claims

### Claim 1

A hole transport material for an organic electroluminescence (EL) device, the hole transport material being represented by Formula 1, below:
wherein:
Ar1 is an aryl group having 6 to 20 carbon atoms,
R1 to R7 are each independently a substituted or unsubstituted straight-chain alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted branched-chain alkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, or a heteroaryl group having 5 to 20 carbon atoms,
a to g are integers indicating the number of substituent R1 to R7,
each R1 is different from or the same as each other R1,
each R2 is different from or the same as each other R2,
each R3 is different from or the same as each other R3,
each R4 is different from or the same as each other R4,
each R5 is different from or the same as each other R5,
each R6 is different from or the same as each other R6,
each R7 is different from or the same as each other R7,
X of ring A is a methine group, a carbon atom, or a nitrogen atom, and
Y is an oxygen atom or a sulfur atom.

### Claim 2 (depends on 1)

The hole transport material as claimed in claim 1, wherein 1 to 3 of the Xs are nitrogen atoms.

### Claim 3 (depends on 2)

The hole transport material as claimed in claim 2, wherein at least one of the Xs of ring A is the carbon atom.

### Claim 4 (depends on 1)

The transport material as claimed in claim 1, wherein a to g satisfy the following relations: 0≦a≦3, 0≦b≦4, 0≦c≦4, 0≦d≦4, 0≦e≦3, 0≦f≦4, and 0≦g≦5.

### Claim 5

An organic EL device comprising a hole transport layer formed of a hole transport material represented by Formula 1, below:
wherein:
Ar1 is an aryl group having 6 to 20 carbon atoms,
R1 to R7 are each independently a substituted or unsubstituted straight-chain alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted branched-chain alkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, or a heteroaryl group having 5 to 20 carbon atoms,
a to g are integers indicating the number of substituent R1 to R7,
each R1 is different from or the same as each other R1,
each R2 is different from or the same as each other R2,
each R3 is different from or the same as each other R3,
each R4 is different from or the same as each other R4,
each R5 is different from or the same as each other R5,
each R6 is different from or the same as each other R6,
each R7 is different from or the same as each other R7,
X of ring A is a methine group, a carbon atom, or a nitrogen atom, and
Y is an oxygen atom or a sulfur atom.

### Claim 6 (depends on 5)

The organic EL device as claimed in claim 5, wherein 1 to 3 of the Xs are nitrogen atoms.

### Claim 7 (depends on 6)

The organic EL device as claimed in claim 6, wherein at least one of the Xs of ring A is the carbon atom.

### Claim 8 (depends on 5)

The organic EL device as claimed in claim 5, wherein a to g satisfy the following relations: 0≦a≦3, 0≦b≦4, 0≦c≦4, 0≦d≦4, 0≦e≦3, 0≦f≦4, and 0≦g≦5.