Patent ID: 7001677
Filing Date: 2006-02-21
Classification: C07D,C08K,C09B,C09K,H01L,H05B,Y10S

Abstract:
1. 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 cathode and a light-emitting substance, wherein the light-emitting substance is a diketopyrrolopyrrole (“DPP”) represented by formula I or formula III wherein R Ar Ar or phenanthryl, 2- or 9-fluorenyl, or anthracenyl, wherein R or R and n stands for 0, 1, 2 or 3, and wherein Z stands for a diradical selected from the group consisting of a single bond, C