A highly selective colorimetric and fluorescent chemosensor for Cr2+ in aqueous solutions
作者:J. Rull-Barrull、M. d'Halluin、E. Le Grognec、F.-X. Felpin
DOI:10.1016/j.tetlet.2016.12.038
日期:2017.2
sensing properties toward various metal cations in aqueous solutions were investigated by colorimetric changes, UV–vis and fluorescence spectroscopies. The sensor exhibited a high selectivity for Cr2+ over Cr3+ and other divalent cations such as Cu2+, Mg2+, Zn2+, Ca2+, Cd2+, Co2+, Hg2+ and Ni2+. The linear range of detection by fluorescence spectroscopy is 0.07–3.5 mM, with a detection limit of ca. 64 μM
一种新的基于罗丹明的化学传感器是通过经过修饰的铜催化阿奇多香豆素与炔基罗丹明的[3 + 2]-环加成反应而合成的。通过比色变化,紫外可见光谱和荧光光谱研究了其对水溶液中各种金属阳离子的传感特性。该传感器对Cr 2+的选择性高于Cr 3+和其他二价阳离子,如Cu 2 +,Mg 2 +,Zn 2 +,Ca 2 +,Cd 2 +,Co 2 +,Hg 2+和Ni 2的选择性高。+。荧光光谱检测的线性范围为0.07–3.5 mM,检出限为ca。64微米 Cr 2+与传感器的结合模式通过实验证据得以合理化。