申请人:Luminescence Technology Corporation
公开号:US08962160B2
公开(公告)日:2015-02-24
The present invention discloses a novel material is represented by the following formula (A), the organic EL device employing the material as blue emitting layer can lower driving voltage, prolong half-lifetime and increase the efficiency.
Wherein m represent an integer of 0 to 4, R1 and R2 are identical or different. R1 and R2 are independently selected from the group consisting of a hydrogen atom, alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms. R3 and R4 are identical or different, R3 and R4 are independently selected from the group consisting of hydrogen atom, a halide, a substituted or unsubstituted arylamine, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.
本发明揭示了一种由以下公式(A)表示的新材料,采用该材料作为蓝色发射层的有机EL器件可以降低驱动电压,延长半衰期并提高效率。其中m表示0至4的整数,R1和R2相同或不同。R1和R2独立地选自由1至20个碳原子的烷基,具有6至30个碳原子的取代或未取代的芳基,具有6至30个碳原子的取代或未取代的芳基烷基。R3和R4相同或不同,R3和R4独立地选自氢原子,卤素,取代或未取代的芳基胺,具有1至20个碳原子的取代或未取代的烷基,具有6至30个碳原子的取代或未取代的芳基。