设计合成了一类亚胺双键连接的TTF-π-吡啶类化合物,2NTTF、3NTTF和4NTTF,并研究了对阳离子的识别作用.发现当加入毫摩尔浓度的Pb2+离子时,这些化合物的溶液颜色明显改变,并伴随核磁谱图和电化学性质的变化.其中,2NTTF中的亚胺双键上的N原子不仅作为一个π共轭桥,而且参与了螯合配位作用. A class of imine double bond-linked TTF-π-pyridines, 2NTTF, 3NTTF and 4NTTF were designed and synthesized, and the recognition of cations was studied. It was found that the solution color of these compounds when added with millimolar concentrations of Pb 2+ ions Obviously changed with the changes of NMR spectra and electrochemical properties, in which the N atom on the imine double bond in 2NTTF not only acts as a π-conjugated bridge, but also participates in the chelating coordination.