Qian Junning, Wu Di, Cai Ping, Xia Jiangbin
College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China.
College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2019 Jul 5;218:76-84. doi: 10.1016/j.saa.2019.03.093. Epub 2019 Mar 28.
A new nitrogen atom free polythiophene derivative bearing methoxy-ethoxy units of poly{3-[2-(2-methoxy-ethoxy)-ethoxy]-thiophene} (PM) was successfully synthesized by introducing multiple ether bonds on the thiophene unit. The special (ether bonds) coordination structure was constructed and these fluorescence characteristics of PM to metal ions detection were investigated. This polythiophene-based material displays a specific fluorescence quenching effect on Cu and Ag, and correspondingly emerges some color changes that are visible to the naked eyes. In addition, it even performs a low detection limit to Cu for only 0.45 μM, which exhibits a higher selective detection to Cu than other reported N-containing chemosenors. These discoveries are helpful to indicate an original aspect for development on nitrogen atom free polythiophene-based fluorescent-sensing materials.
通过在噻吩单元上引入多个醚键，成功合成了一种新型的不含氮原子的聚噻吩衍生物，即聚{3-[2-(2-甲氧基-乙氧基)-乙氧基]-噻吩}(PM)。构建了特殊的（醚键）配位结构，并研究了PM对金属离子检测的荧光特性。这种基于聚噻吩的材料对铜和银表现出特定的荧光猝灭效应，并且相应地出现了一些肉眼可见的颜色变化。此外，它对铜的检测限低至仅0.45 μM，与其他已报道的含氮化学传感器相比，对铜具有更高的选择性检测能力。这些发现有助于为开发不含氮原子的聚噻吩基荧光传感材料指明一个新的方向。
