Star- and Banana-Shaped Oligomers with a Pyrimidine Core: Synthesis and Light-Emitting Properties
作者:Sylvain Achelle、Yvan Ramondenc、Francis Marsais、Nelly Plé
DOI:10.1002/ejoc.200800139
日期:2008.6
reactions we have synthesised a series of star- and banana-shaped oligomers with a pyrimidine unit as the central core and π-conjugated arms consisting of aromatics bearing electron-donor substituents. The position of the arms as well as the nature of their substituents were investigated with a view to accessing compounds that exhibit interesting light-emitting properties. The best fluorescence quantum yields
通过使用 Suzuki-Miyaura 交叉偶联反应,我们合成了一系列星形和香蕉形低聚物,以嘧啶单元为中心核,π 共轭臂由带有电子给体取代基的芳烃组成。研究了臂的位置及其取代基的性质,以期获得具有有趣发光特性的化合物。用对-(二甲氨基)苯基或2-呋喃基取代的香蕉形嘧啶获得最佳荧光量子产率。以苯、嘧啶或s-三嗪为中心单元的低聚物的光学性质的比较表明,嘧啶化合物给出了最好的结果。一些合成的低聚物表现出溶剂化变色特性和 pH 敏感性,