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:
May. 28, 2019
Filed:
Aug. 07, 2018
Applicant:
Kyushu University, Natiional University Corporation, Fukuoka, JP;
Inventors:
Ryota Kabe, Fukuoka, JP;
Chihaya Adachi, Fukuoka, JP;
Assignee:
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka-Shi, Fukuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/06 (2006.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1018 (2013.01);
Abstract
The invention discloses a long persistent luminescence emitter which has an electron-donating molecule that is stable in the radical cation state and an electron-accepting molecule that is stable in the radical anion state and from which luminescence is observed at 10 K after photo-irradiation of the long persistent luminescence emitter stops. According to the disclosed invention, persistent luminescence can be exhibited for a long time with only organic compounds without the use of any rare-earth elements.