University of Southern California

Princeton University

Feras Abdel-Razzaq

Mark Edward Thompson

Stephen R Forrest

Raymond Kwong

Marc A Baldo

Sergey Lamansky

Drew Murphy

Paul E Burrows

Peter I Djurovich

Peter Djurovic

Venkatesan V Krishnan

Alexandre G Dokoutchaev

Paul A Burrows

Shannon C Rice

Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula LMX, wherein L and X are distinct bidentate ligands. Compounds of this formula can be synthesized more facilely than in previous approaches and synthetic options allow insertion of fluorescent molecules into a phosphorescent complex, ligands to fine tune the color of emission, and ligands to trap carriers.

Organometallic complexes as phosphorescent emitters in organic LEDs

Organometallic complexes as phosphorescent emitters in organic leds

Organometallic complexes as phosphorescent emitters in organic LEDS

A method for the production of hydrogen peroxide from a source of hydrogen and oxygen in the presence of a dispersion of a catalyst in an organic reaction medium, the catalyst being composed of inert particles of between 1 and 100 microns, the particles having coated thereon about three to ten layers of a zirconium or hafnium complex, the organic reaction medium having a pH of less than about 3 and composed of at least 50% of a lower alkyl alcohol, a lower alkyl ketone or a mixture thereof, water and a mineral acid.

Method for catalytic production of hydrogen peroxide and catalyst

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Los Angeles, CA, United States of America

Feras Abdel-Razzaq