Indolocarbazole compound for use in organic...

Details Indolocarbazole compound for use in organic... Indolocarbazole compound for use in organic...

2007-11-08

2011-11-22

Garrett, Dawn L (Department: 1786)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C546S276700

Reexamination Certificate

active

08062769

ABSTRACT:
Provided is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, fully secured of driving stability, and simply constructed. The EL device has a light-emitting layer disposed between an anode and a cathode stacked one upon another on a substrate and the light-emitting layer comprises a phosphorescent dopant and an indolocarbazole derivative as a host material. Examples of the indolocarbazole compounds include a compound represented by the following formula (2) or (3), wherein X is N or CH, at least one of Xs is N, and Ar1to Ar3each is a substituted or unsubstituted aromatic group.

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Pindur et al., “Indolo[3,2-b]carbazol: Reaktionsprodukt der Umsetzung von 3,3′—Bisindolylmethan mit Orthoameisensäuretriethylester”, Archiv der Pharmzaie, vol. 320, p. 280-282, Mar. 1987.
Hu et al., “An Efficient and General Synthesis of Indolo[2,3-a]carbazoles Using the Fischer Indole Synthesis”, Synlett, No. 1, p. 0042-0048, 2005.

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