| 2 | A highly selective colorimetric sensor for Hg^(2+) based on a copper (Ⅱ) complex of thiosemicarbazone in aqueous solutions显示文摘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. | WEI TaiBao LI JunJian BAI CuiBing LIN Qi YAO Hong XIE YongQiang ZHANG YouMing | 2013 | Science China Chemistry2013，56，7： | 0 |
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