Patent ID: 6861162
Filing Date: 2005-03-01
Classification: C07D,C09K,H01L,Y10S

Abstract:
1. An organic electroluminescence device comprising an anode, a hole transport layer adjacent said anode, at least one organic emitting layer adjacent said hole transport layer, an electron transport layer adjacent said at least one organic emitting layer, and a cathode adjacent said electron transport layer, wherein said at least one organic emitting layer contains a compound of the formula [I] wherein X is N atom each Y, Z, X′, Y′, and Z′ is independently a C or N atom, and each R 1 -R 5 is selected independently from the groups consisting of hydrogen, halogen, cyano, nitro, carbonyl, sulfone, ester, alkoxy, alkyl, alkyl amino, dialkylamino, aryl amino, diarylamino, haloalkyl containing a lower alkyl, hydroxyalkyl containing a lower alkyl, styryl, alkyloxy, alkylthio, aryloxy, arylthio, siloxy, aryl, substituted aryl, heterocyclic hydrocarbon, and substituted heterocyclic hydrocarbon.