Conjugated and nonconjugated bipolar-transporting dinuclear europium(III) complexes involving triphenylamine and oxadiazole units: synthesis, photophysical and electroluminescent properties
作者:Yu Liu、Kai Chen、Kongqiang Xing、Yafei Wang、Haigang Jiang、Xiangping Deng、Meixiang Zhu、Weiguo Zhu
DOI:10.1016/j.tet.2013.03.092
日期:2013.6
TPA unit by conjugated and unconjugated linkages for the europium complex A and B, respectively. Compared with complex B, complex A exhibited higher thermal stability and quantum efficiency. A maximum brightness of 296.3 cd/m2 at voltage of 8.5 V was obtained in the complex A-doped devices with saturated red emission using a blend of poly(vinylcarbazole) and 2-(4-biphenyl)-5-(4-tert-butyl-phenyl)-1,3
成功地合成了两种新型的双极传输双核di(III)配合物,将空穴传输的三苯胺(TPA)和电子传输的恶二唑(OXD)单元结合到双菲咯啉双配体中,并通过红外,元素分析,电化学,光物理分析,热重分析,其中OXD单元分别通过for配合物A和B的共轭和非共轭键连接到TPA单元上。与配合物B相比,配合物A表现出更高的热稳定性和量子效率。使用聚(乙烯基咔唑)和2-(4-联苯基)-5-(4-叔丁基)的混合物,在具有饱和红色发射的复杂A掺杂器件中,在8.5 V电压下获得296.3 cd / m 2的最大亮度。-丁基-苯基)-1,3,4-恶二唑作为主体基质,比具有相同配置的复杂B掺杂器件的基质高约两倍。据我们所知,这是基于双核euro复合物通过旋转浇铸法的最佳结果之一。