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:
Mar. 17, 2015
Filed:
Apr. 03, 2007
Mohammad Khaja Nazeeruddin, Ecublens, CH;
Cedric Klein, Brumath, FR;
Michael Graetzel, Saint Sulpice, CH;
Mohammad Khaja Nazeeruddin, Ecublens, CH;
Cedric Klein, Brumath, FR;
Michael Graetzel, Saint Sulpice, CH;
Solvay (Societe Anonyme), Brussels, BE;
Abstract
This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C^N]M(T)(L), comprising chelate dialkylamino-substituted C^N ligands, monodentate neutral ligand (L) having sphybridized N atom and a monodentate anionic ligand (T) chosen among CN, CNO, CNS. It has been surprisingly found that when the metal has bound thereto in addition to substituted orthometalated ligands, both an anion chosen among cyanide, thiocyanate, cyanate, possessing strong C donor and π acceptor properties, and a monodentate neutral ligand L, as above defined, said ligands advantageously participate in the emission process, significantly shifting emission towards higher energies (blue-shift) and enabling appreciable improvement of the emission efficiency of complexes [C^N]M(T)(L). Still objects of the invention are the use of said light emitting materials and organic light emitting device comprising said light emitting material.