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By applying an indirect strategy, a new copper (Ⅱ) complex of a thiosemicarbazone L has been successfully developed as a colorimetric chemosensor for the sensitive detection of mercury (Ⅱ) ions. In the presence of copper (Ⅱ) ions, the colorless solution of L became yellow; however, upon the addition of traces of mercury (Ⅱ) ions, the yellow color faded to colorless immediately. Other ions, including Fe3+ , Ag+ , Ca2+ , Zn2+ , Pb2+ , Cd2+ , Ni2+ , Co2+ , Cr3+ and Mg2+ had a negligible influence on the probe behavior. The detection limits were 5.0×10 -6 M and 3.0×10 -7 M of Hg2+ using the visual color changes and UV-vis changes respectively. Test strips based on Cu-L were fabricated, which could act as a convenient and efficient Hg2+ test kits.
By applying an indirect strategy, a new copper (II) complex of a thiosemicarbazone L has been successfully developed as a colorimetric chemosensor for the sensitive detection of mercury (II) ions. In the presence of copper (II) ions, the colorless solution of Other ions, including Fe3 +, Ag +, Ca2 +, Zn2 +, Pb2 +, Cd2 +, Ni2 +, Co2 +, Cr3 + and Mg2 + had, have been added to traces of mercury (II) ions, the yellow color faded to colorless immediately The detection limits were 5.0 × 10 -6 M and 3.0 × 10 -7 M of Hg2 + using the visual color changes and UV-vis changes respectively. Test strips based on Cu-L were fabricated, which could act as a convenient and efficient Hg2 + test kits.