# US 10,374,169 B2 · Organic hole transport material

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,374,169 B2
- Document ID: US10374169B2
- Status: Granted
- Kind: B2
- Application number: 16/060,936
- Filed: 2016-11-30
- Published: 2018-12-20
- Granted: 2019-08-06
- Earliest claimed: 2015-12-09
- Assignees: Guangdong Aglaia Optoelectronic Materials Co., Ltd
- Applicants: Guangdong Aglaia Optoelectronic Materials Co. Ltd
- Inventors: Kam-Hung Low; Chin-Hsin Chen; Zhe Li; Lei Dai; Lifei Cai
- Web page: https://patentgrep.com/patent/US10374169B2

## CPC

- C07D 209/86: with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system
- H10K 85/624: {containing six or more rings}
- H10K 85/626: {containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene}
- H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole}
- H10K 50/15: Hole transporting layers
- H10K 50/17: Carrier injection layers
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

The present invention relates to an organic hole transport material having a compound of the structure shown in formula (I), wherein R1-R2 independently represent hydrogen, C1-C8 substituted or substituted alkyl, C2-C8 substituted or unsubstituted alkenyl, C2-C8 substituted or unsubstituted alkynyl, or C6-C10 substituted or substituted aryl, the substituents being C1-C4 alkyl or halogen. Device experiments show that the organic hole transport material of the present invention has high glass-transition temperature and high thermal stability; a hole-only organic semiconductor diode device and an organic electroluminescent device manufactured by the organic hole transport material have good hole transport performance, high and stable current efficiency, and a long device life.

## Claims

### Claim 1

An organic hole transport material having a compound of a structure shown in formula (I)
wherein R1-R2 independently represent hydrogen, C1-C8 substituted or substituted alkyl, C2-C8 substituted or unsubstituted alkenyl, C2-C8 substituted or unsubstituted alkynyl, or C6-C10 substituted or substituted aryl, the substituents being C1-C4 alkyl or halogen.

### Claim 2 (depends on 1)

The organic hole transport material according to claim 1, wherein R1-R2 independently represent hydrogen, C1-C4 substituted or substituted alkyl, C2-C4 substituted or unsubstituted alkenyl, C2-C4 substituted or unsubstituted alkynyl, or substituted or substituted aryl.

### Claim 3 (depends on 2)

The organic hole transport material according to claim 2, wherein R1-R2 independently represent hydrogen, C1-C4 substituted or substituted alkyl, phenyl, naphthyl, or C1-C4 alkyl substituted phenyl or naphthyl.

### Claim 4 (depends on 3)

The organic hole transport material according to claim 3, wherein R1 is identical with R2.

### Claim 5 (depends on 4)

The organic hole transport material according to claim 4, having a compound of a structure:

### Claim 6 (depends on 4)

The organic hole transport material according to claim 4, wherein R1 and R2 are hydrogen.

### Claim 7 (depends on 6)

The organic hole transport material according to claim 6, having a compound of a structure: