Mixed ligand aluminum chelate luminophors

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 11/06 (2006.01) C07F 5/06 (2006.01) H01L 51/30 (2006.01) H01L 51/50 (2006.01)

Patent

CA 2086192

MIXED LIGAND ALUMINUM CHELATE LUMINOPHORS Abstract A blue-emitting luminescent composition is disclosed comprised of an aluminum chelate containing a phenolato ligand and two RS-8-quinolinolato ligands, where Rs substituents are chosen to block the attachment of more than two substituted 8-quinolinolato ligands to the aluminum atom. The presence of the phenolato ligand shifts emission to the blue region of the spectrum. Emission can be shifted to even shorter blue wavelengths by the incorporation of a pentacarbocyclic aromatic fluorescent dye.

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