The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2023
Filed:
Nov. 16, 2018
Kwansei Gakuin Educational Foundation, Hyogo, JP;
Jnc Corporation, Tokyo, JP;
Takuji Hatakeyama, Hyogo, JP;
Kazushi Shiren, Chiba, JP;
Yuko Yamaga, Chiba, JP;
Guofang Wang, Chiba, JP;
Yasuyuki Sasada, Chiba, JP;
KWANSEI GAKUIN EDUCATIONAL FOUNDATION, Hyogo, JP;
SK MATERIALS JNC CO., LTD., Gyeonggi-Do, KR;
Abstract
A polycyclic aromatic compound represented by general formula (1) described below and having a bulky substituent in a molecule is used as a material for an organic device, whereby, for example, an organic EL device excellent in quantum efficiency can be provided. In particular, concentration quenching can be suppressed even if a use concentration is comparatively high, and therefore the present art is advantageous in a device production process. In formula (1) described above, R, R, Rto R, Rto Rand Rto Rare independently hydrogen, aryl or the like, Xis —O— or >N—R (R is aryl or the like), Zand Zare a bulky substituent such as aryl, and at least one hydrogen in the compound represented by formula (1) may be replaced by halogen or deuterium.