Invention Grant
![Dibenzo[f,h]quinoxaline derivative, method of synthesizing the same, light-emitting element, light-emitting device, electronic appliance, and lighting device](/docs/US/2017-07-04/US09695158B2/abs.jpg.600x600.jpg)
- Patent Title: Dibenzo[f,h]quinoxaline derivative, method of synthesizing the same, light-emitting element, light-emitting device, electronic appliance, and lighting device
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Application No.: US14484693Application Date: 2014-09-12
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Publication No.: US09695158B2Publication Date: 2017-07-04
- Inventor: Hideko Inoue , Tomohiro Kubota , Satoshi Seo , Hayato Yamawaki , Yasushi Kitano
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Husch Blackwell LLP
- Priority: JP2013-190214 20130913; JP2014-097738 20140509
- Main IPC: C07D409/10
- IPC: C07D409/10 ; H01L51/50 ; H01L51/00
![Dibenzo[f,h]quinoxaline derivative, method of synthesizing the same, light-emitting element, light-emitting device, electronic appliance, and lighting device](/abs-image/US/2017/07/04/US09695158B2/abs.jpg.150x150.jpg)
Abstract:
A composition comprising a dibenzo[f,h]quinoxaline derivative in which impurities are reduced and a method of synthesizing dibenzo[f,h]quinoxaline in which impurities are reduced are provided. In addition, a light-emitting element, a light-emitting device, an electronic appliance, or a lighting device with high emission efficiency and high reliability in which dibenzo[f,h]quinoxaline is used as an EL material is provided. In the synthesis method, 2-(chloroaryl)dibenzo[f,h]quinoxaline is used as a synthetic intermediate in a synthetic pathway so that an impurity contained in a final product can be removed easily by purification by sublimation.
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