【摘要】 设计合成了2个苯胺取代吖啶衍生物N3,N3,N6,N6-四苯基吖啶基-3,6-二胺(1)和N3,N3,N6,N6-四对甲苯基吖啶基-3,6-二胺(2),通过化学修饰在吖啶核的两端引入二苯胺取代基可以调节化合物的能级和堆积结构等性质,从而使这些吖啶衍生物具有良好的发光性能,可用于制备电致发光器件.基于吖啶衍生物为掺杂发光材料制备的电致发光器件均呈现绿光发射,器件开启电压较低(2.4 V),以化合物1和2制备的器件最高功率效率分别为4.9和8.2 lm/W.考察了其光物理、电化学、热学和荧光量子效率等性能.结果表明,化合物1和2具有较高的量子效率及匹配的能级结构,这是获得较高电致发光效率的基础.更多还原

【Abstract】 Two fluorescent acridine derivatives were designed and synthesized for the fabrication of organic light-emitting diodes( OLEDs). By attaching diphenylamino substituent groups to the acridine core,the energy levels and molecular packing structures of them were regulated and controlled. Moreover,OLEDs using these compounds as emitters were fabricated,they all exhibited green emission and low turn-on voltages of 2. 4 V were realized. They achieved the highest power efficienciey( PE) as high as 4. 9 and 8. 2 lm / W together with the peak current efficiency( CE) values of 5. 3 and 7. 4 cd / A,respectively. These results represent very high EL performance based on the simple HTL-EML-ETL architecture from fluorescent organic emitters. The photophysical,electrochemical and thermal properties of the two compounds were also studied,the results proved that acridine derivatives possess promising potential for the application of high-performance fluorescent OLEDs.更多还原