申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP1775335A2
公开(公告)日:2007-04-18
Materials for organic electroluminescence devices and organic electroluminescence devices which exhibit high efficiency of light emission and have a long life and excellent heat resistance, novel compounds and processes for producing the materials for organic electroluminescence devices are provided.
The material for organic electroluminescence devices is represented by following general formula [1]:
wherein A represents a substituted or unsubstituted arylene group having 22 to 60 carbon atoms, X1 to X4 each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X1 and X2 may be bonded to each other, X3 and X4 may be bonded to each other, Y1 to Y4 each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, when the arylene group represented by A has 26 or less carbon atoms, a+b+c+d>0 and the arylene group does not contain two or more anthracene nucleus;
general formula [2] being:
wherein R1 to R4 each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R1 and R2 or R3 and R4, Z represents a substituted or unsubstituted aryl group having 6 to 20 carbon atoms and n represents 0 or 1.
本发明提供了有机电致发光器件材料和有机电致发光器件,这些材料和器件发光效率高、寿命长、耐热性能优异,还提供了新型化合物和生产有机电致发光器件材料的工艺。
有机电致发光器件材料由以下通式[1]表示:
其中 A 代表具有 22 至 60 个碳原子的取代或未取代芳基,X1 至 X4 各自独立地代表具有 6 至 30 个碳原子的取代或未取代芳基,X1 和 X2 可以相互键合,X3 和 X4 可以相互键合、Y1至Y4各自独立地代表通式[2]所代表的有机基团,a至d各自代表0至2的整数,当A所代表的芳烯基团具有26个或更少的碳原子时,a+b+c+d>0,且芳烯基团不包含两个或更多的蒽核;
通式[2]为
其中 R1 至 R4 各自独立地代表氢原子、具有 1 至 20 个碳原子的取代或未取代的烷基、具有 6 至 20 个碳原子的取代或未取代的芳基、氰基或通过 R1 和 R2 或 R3 和 R4 的连接形成三键,Z 代表具有 6 至 20 个碳原子的取代或未取代的芳基,n 代表 0 或 1。