Sugar-Poly(para-phenylene ethynylene) Conjugates as Sensory Materials: Efficient Quenching by Hg2+ and Pb2+ Ions
作者:Ik-Bum Kim、Belma Erdogan、James N. Wilson、Uwe H. F. Bunz
DOI:10.1002/chem.200400788
日期:2004.12.17
Three polar poly(para-phenylene ethynylene)s (PPE) were synthesized by utilizing the Heck-Sonogashira protocol. Two of the PPEs carry beta-glucopyranose substituents. Depending upon the linker used between the glycol units and the backbone, the fluorescence of these PPEs can be quenched by Hg2+ and Pb2+ to a varying degree. Monomeric model compounds that are substituted with only one glucose unit are
利用Heck-Sonogashira规程合成了三种极性的聚(对亚苯基亚乙炔基)(PPE)。两个PPE带有β-吡喃葡萄糖取代基。根据乙二醇单元和主链之间使用的接头,这些PPE的荧光可以被Hg2 +和Pb2 +淬灭到不同程度。仅被一个葡萄糖单元取代的单体模型化合物无法有效地淬灭。一个PPE组件中存在许多葡萄糖取代基,导致与Hg2 +的结合常数大大增加,并且荧光猝灭得到了增强。