Oxadiazole tetramers

Stock material or miscellaneous articles – Composite – Of inorganic material

Reexamination Certificate

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C428S917000, C313S504000, C313S506000, C544S179000, C544S180000, C548S110000, C548S125000, C548S131000, C548S146000, C548S215000, C548S250000, C548S300100, C556S413000, C556S465000

Reexamination Certificate

active

07052783

ABSTRACT:
This invention relates to tetraphenylmethane-based oxadiazole molecules that act as electron transporting materials to be used in electroluminescent devices. The oxadiazole compounds are of the following formula. Each variable is defined in the specification.

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patent: WO00/03565 (2000-01-01), None
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Weinfurtner, et al.Novel amorphous molecular materials for organic light-emitting devices. SPIE, vol. 3476, Jul. 1998, pp. 40-48.
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Oldham, Jr., et al.Synthesis, Spectroscopy, and Morphology of Tetrastilbenoidmethanes. J. Am. Chem. Soc., vol. 120, 1998, pp. 2987-2988.
Wang, et al.Synthesis, Morphology, and Optical Properties of Tetrahedral Oligo(phenylenevinylene)Materials. J. Am. Chem Soc., vol. 122, 2000, pp. 5695-5709.

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