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US Patent 9397302 Organic electroluminescent materials and devices

Patent 9397302 was granted and assigned to Universal Display Corporation on July, 2016 by the United States Patent and Trademark Office.

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Patent abstract

Novel ligands for metal complex compounds that are useful as a phosphorescent emitter in organic light emitting devices that incorporate fluorinated side chains in the ligands are disclosed. Such metal complex has at least one substituent R selected from the group consisting of partially fluorinated alkyl, partially fluorinated cycloalkyl, and combinations thereof, wherein R is directly bonded to an aromatic ring, In the compound, C having an F attached thereto is separated by at least one carbon atom from the aromatic ring.

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