# US 8,785,002 B1 · High-energy triplet host materials, luminescent layer comprising the same, and organic electroluminescent device comprising the luminescent layer

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- Number: US 8,785,002 B1
- Document ID: US8785002B1
- Status: Granted
- Kind: B1
- Application number: 12/381,247
- Filed: 2009-03-10
- Granted: 2014-07-22
- Earliest claimed: 2008-10-07
- Assignees: Bowling Green State University
- Applicants: Pavel Anzenbacher, Jr.; Shin-ya Takizawa
- Inventors: Pavel Anzenbacher, Jr.; Shin-ya Takizawa
- Web page: https://patentgrep.com/patent/US8785002B1

## CPC

- C07D 235/18: with aryl radicals directly attached in position 2
- C07D 401/14: containing three or more hetero rings
- C07D 403/10: linked by a carbon chain containing aromatic rings
- C07D 403/14: containing three or more hetero rings
- C07D 409/14: containing three or more hetero rings
- C07D 413/14: containing three or more hetero rings
- H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole}
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 2101/10: Triplet emission
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

The present invention includes high triplet energy compositions of matter, methods of their manufacture, devices incorporating the compositions of matter, and methods of using those compositions of matter and devices. The devices incorporating the high triplet energy compositions of matter include electroluminescence devices including organic light-emitting diodes (OLEDs). The present invention also includes methods of using the compositions of matter, such as by operating the devices of the present invention incorporating them, to provide light through electroluminescence, as well as obtaining and/or operating devices of the present invention through the application of electrical energy or potential, as well as methods of providing light through electroluminescence through their operation.

## Claims

### Claim 1

A material having the structure:

### Claim 2 (depends on 1)

An emissive layer comprising material according to claim 1.

### Claim 3 (depends on 1)

An emissive layer comprising material according to claim 1 and a dopant.

### Claim 4

A material having the structure:

### Claim 5 (depends on 4)

An emissive layer comprising material according to claim 4.

### Claim 6 (depends on 4)

An emissive layer comprising material according to claim 4 and a dopant.

### Claim 7

An organic light emitting device, comprising: (a) an anode; (b) a cathode; and (c) an emissive layer disposed between the anode and the cathode, the emissive layer comprising material having the structure:

### Claim 8

An organic light emitting device, comprising: (a) an anode; (b) a cathode; and (c) an emissive layer disposed between the anode and the cathode, the emissive layer, comprising material having the structure: