Polymer-based colorimetric and “turn off” fluorescence sensor incorporating benzo[2,1,3]thiadiazole moiety for Hg<sup>2+</sup>
Detection
作者:Xiao Ma、Fengyan Song、Lu Wang、Yixiang Cheng、Chengjian Zhu
DOI:10.1002/pola.25059
日期:2012.2.1
on‐off Hg2+ fluorescence quenching property in tetrahydrofuran solution in comparison with the other cations including Mg2+, Zn2+, Co2+, Ni2+, Cu2+, Ag+, Cd2+, and Pb2+. More importantly, the fluorescent color of the polymer sensor disappears after addition of Hg2+, which could be easily detected by naked eyes. The results indicate that this kind of polymer sensor incorporating benzo[2,1,3]thiadiazole
通过将4,7-二溴苯并[2,1,3]噻二唑(M-1)与三1,4-二乙炔基-2,5-双(2-(2-(2-甲氧基乙氧基)乙氧基)}-苯(M-2)通过Pd催化的Sonogashira反应。该聚合物显示出强烈的橙色荧光。通过光致发光和紫外可见吸收测量,研究了聚合物对各种金属离子的响应光学性能。与其他阳离子(包括Mg 2 +,Zn 2 +,Co 2 +,Ni 2 +,Cu 2 +,Ag +)相比,该聚合物在四氢呋喃溶液中显示出高灵敏度和选择性的Hg 2+荧光猝灭性质。,Cd 2+和Pb 2+。更重要的是,添加Hg 2+后,聚合物传感器的荧光颜色消失,这可以通过肉眼轻松地检测到。结果表明,这种以苯并[2,1,3]噻二唑部分为配体的聚合物传感器可作为新型的比色和荧光传感器检测Hg 2+。©2011 Wiley Periodicals,Inc. J Polym Sci A部分:Polym Chem,2011年