Patent number: 7037600
Abstract: Compounds of formula [I] wherein each R1 to R8 is independently selected from the group consisting of halogen atoms, cyano, isocyano, mercapto, amino, carbonyl, carboxy, sulfone, nitro and hydroxy groups, and optionally substituted alkyl, alkenyl, alkynyl, haloalkyl, hydroxyalkyl, aryl, alkoxy, aryloxy, alkylamino, arylamino, alkylarylamino, amide, alkylthio, arylthio, alkoxy carbonyl, siloxy, cyclic hydrocarbon or heterocyclic groups; each x is independently zero, one, two or three; each y is independently zero or one; and each z is independently zero, one, two or three are useful in organic electroluminescence devices. Such compounds are disclosed herein, as well as organic electroluminescence devices using the compounds in the emissive layer.
Type:
Grant
Filed:
March 18, 2003
Date of Patent:
May 2, 2006
Assignee:
City University of Hong Kong
Inventors:
Shuit-Tong Lee, Chun-Sing Lee, Liang-Sun Hung, Baoxiu Mi, Zhi-Qiang Gao
