The present invention is to provide a light emitting device which can generate high-intensity light emission, using a fluorescent material containing a rare earth element ion complex and being excellent in durability and also provide the fluorescent material to be used therein. The present invention relates to a light emitting device comprising a semiconductor light emitting element which emits light within the region from near-ultraviolet light to visible light, and a fluorescent material which contains a rare earth element ion complex having an aromatic ring-containing Bronsted acid ion with a pKa value of 7 or less as a ligand and emits light by the action of light of the semiconductor light emitting element.
US7282160B2
申请人:——
公开号:US7282160B2
公开(公告)日:2007-10-16
US7396488B2
申请人:——
公开号:US7396488B2
公开(公告)日:2008-07-08
Über Bromfluoranthene. 2. Mitteilung. Synthese von 4, 11-Dibrom-fluoranthen
作者:Th. Holbro、E. Tagmann
DOI:10.1002/hlca.19500330723
日期:——
Ausgehend vom 2,7-Dibrom-fluoren-9-carbonsäure-methylester wurde das 4, 11-Dibrom-fluoranthen synthetisch aufgebaut. Dieses ist identisch mit dem durch Bromieren von Fluoranthen erhaltenen, bei 205° schmelzenden Dibrom-fluoranthen.