一种星型有机低聚物的合成及光电性能

通过多步反应合成了一种新型的具有“双极(bipolar)”性质和发光性能的以N原子为中心的星型有机小分子低聚物——三(4-(5-(4-(5-(4-(二苯胺基)苯基)-1,3,4-噁二唑-2)苯基)-1,3,4-噁二唑-2)苯基)胺. 用¹H NMR, MS和元素分析进行了表征, 研究了化合物的热稳定性和固体粉末的光致发光性质, 并用循环伏安法测定了其电化学性能. 结果表明, 这种合成的同时具备空穴传导和电子输入双重功能基团的星型有机小分子光致发光性能优良(量子效率92%), 热稳定性好, 可以作为制作有机电致发光器件的候选材料.

Synthesis and Photo-electricity Properties of a Star-shaped Organic Oligomer

A star-shaped organic oligomer, tris(4-(5-(4-(5-(4-(diphenylamino)phenyl)-1,3,4-oxadia- zol-2-yl)phenyl)-1,3,4-oxadiazol-2-yl)phenyl)amine, TDPAPOPOPA, based on a N core, containing a hole-transporting arylamine and an electron-transporting 1,3,4-oxadiazole units has been synthesized using a facile multi-step procedure. The star-shaped organic oligomer emits green light with high fluorescence quantum yields (0.92), indicating that the star-shaped organic oligomer is a highly efficient light-emitting material. Reversible anodic oxidation results suggested that the star-shaped organic oligomer should be predominantly hole-transporting. All the results indicate that the synthesized star-shaped organic oligomer is potentially good candidated as bipolar (hole-transporting/electron-transporting) and emitting material for fabrication of organic light-emitting diodes.