Red-emitting organic electroluminescent elements

Stock material or miscellaneous articles – Composite – Of inorganic material

Reexamination Certificate

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C428S917000, C252S301160, C313S504000, C313S506000

Reexamination Certificate

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07037600

ABSTRACT:
Compounds of formula [I]wherein each R1to R8is independently selected from the group consisting of halogen atoms, cyano, isocyano, mercapto, amino, carbonyl, carboxy, sulfone, nitro and hydroxy groups, and optionally substituted alkyl, alkenyl, alkynyl, haloalkyl, hydroxyalkyl, aryl, alkoxy, aryloxy, alkylamino, arylamino, alkylarylamino, amide, alkylthio, arylthio, alkoxy carbonyl, siloxy, cyclic hydrocarbon or heterocyclic groups; each x is independently zero, one, two or three; each y is independently zero or one; and each z is independently zero, one, two or three are useful in organic electroluminescence devices. Such compounds are disclosed herein, as well as organic electroluminescence devices using the compounds in the emissive layer.

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C.H. Chen et al., “Recent Developments in Molecular Organic Electroluminescent Materials,”Macromol. Symp.125, 1-48 (1997).
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Y. Shirota, “Organic Materials for Electronic and Optoelectronic Devices,”J. Mater. Chem.10, 1-25 (2000).

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