基于芘并咪唑的电致发光材料的合成与表征

Design,Synthesis and Electroluminescence of Organic Conjugated Compounds Based on Pyrene-imidazole

以芘和咪唑为基本构筑单元,利用"一锅法"合成了一系列芘并咪唑衍生物PyPI,PyTPAI,PyCzI和Pyd-CzI.采用质谱、核磁和元素分析等手段表征了化合物的结构.通过调节与芘并咪唑相连接的共轭基团的种类、大小和空间构型,实现对分子热学性质,分子轨道能级和光电性质的调控.进一步制备了有机电致发光器件,得到了较好的器件性能.

A series of organic fluorescent materials based on pyrene-imidazole was designed and synthesized by one-pot reactions. The compounds were thoroughly characterized by1 H NMR and13 C NMR spectroscopy,mass spectroscopy and elemental analysis and corresponded well with their expected structures. The conjugation degree,spatial structure,the highest occupied molecular orbital（ HOMO） and the lowest unoccupied molecular orbital（ LUMO） energy levels are fine-tuned by the various substituents at C1 position of imidazole.They also increase the thermal stabilities of these pyrene-imidazole derivatives. These materials show potential applications in organic light-emitting diodes.