Mixed ligand 8-quinolinolato aluminum chelate luminophors

Details Mixed ligand 8-quinolinolato aluminum chelate luminophors Mixed ligand 8-quinolinolato aluminum chelate luminophors

1991-08-01

1992-08-25

Willis, Jr., Prince

Compositions

Organic luminescent material containing compositions

25230126, 546 7, C09K 1106, C07F 506

Patent

active

051416719

ABSTRACT:
A blue-emitting luminescent composition is disclosed comprised of an aluminum chelate containing a phenolato ligand and two R.sup.s -8-quinolinolato ligands, where R.sup.s 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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