Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 6, 2010
Patent Application Number
11713755
Date Filed
March 5, 2007
Patent Primary Examiner
Patent abstract
Disclosed are electrophosphorescent organic metal complexes with formula (I) or (II), of either geometrical isomers, comprising two bidentate NN-type ligandsor a tetradentate NNNN-type ligand, and a transition metal. These electrophosphorescent materials are valuable to the application in organic light-emitting devices (OLEDs), including red-, orange-, or yellow-light OLEDs.
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