Organometallic complexes

Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing

Reexamination Certificate

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C556S007000, C556S008000, C548S100000, C548S101000, C548S110000, C534S015000, C534S016000

Reexamination Certificate

active

07601859

ABSTRACT:
Organometallic complexes comprising a trivalent lanthanide metal ion complexed with one or more polydentate ligands containing one or more pyrazolyl-derived groups, such as trispyrazolyl borate species, are useful in light emitting materials e.g., in electroluminescent flat panel displays. In the complexes, several classes of which are novel, a coordinate bond is formed between the metal and one of the nitrogen atoms of the pyrazolyl rings.

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