Electroluminescent devices comprising diketopyrrolopyrroles

Details Electroluminescent devices comprising diketopyrrolopyrroles Electroluminescent devices comprising diketopyrrolopyrroles

2006-02-21

2006-02-21

Yamnitzky, Marie (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C252S301160

Reexamination Certificate

active

07001677

ABSTRACT:
Electroluminescent device comprising in this order(a) an anode(b) a hole transporting layer(c) a light-emitting layer(d) optionally an electron transporting layer and(e) a cathodeand a light-emitting substance, wherein the light-emitting substance is a diketopyrrolopyrrole represented by formula I or formula IIIprocesses for the preparation of compounds I, its uses and compositions comprising the compounds I and/or III.

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