The present invention discloses a dipyridine-based compound which can be used as electron-transporting and/or hole blocking material or phosphorous host in organic electroluminescence devices is disclosed. The mentioned dipyridine-based compound is represented by the following formula:
wherein R1 and R2 are identical or different, and R1 and R2 are independently selected from the group consisting of: hydrogen atom, aryl moiety, hetero cycle, multiple fused ring, multiple fused ring with hetero atom(s); A is selected from the following group:
wherein R3 and R4 are identical or different, R5 and R6 are identical or different, R7 and R8 are identical or different, R3, R4, R7, R8 are independently selected from the group consisting of: alkyl moiety and aryl moiety, and R5, R6 are independently selected from the group consisting of: alkyl moiety, aryl moiety and arylamine moiety.
本发明揭示了一种基于二
吡啶的化合物,可用作有机电致发光器件中的电子传输和/或阻挡材料或
磷主体。所述的二
吡啶基化合物由以下公式表示:其中R1和R2相同或不同,并且R1和R2独立地选择自以下组:氢原子、芳基基团、杂环、多重螺环、带有杂原子的多重螺环;A从以下组中选择:其中R3和R4相同或不同,R5和R6相同或不同,R7和R8相同或不同,R3、R4、R7、R8独立地选择自以下组:烷基基团和芳基基团,而R5、R6独立地选择自以下组:烷基基团、芳基基团和芳胺基团。