A Novel 5-Mercapto Triazole Schiff Base as a Selective Chromogenic Chemosensor for Cu2+
  • 【摘要】

    A novel colorimetric cation sensor bearing phenol, thiol and HC=N groups was designed and synthesized. In a DMSO/H2O (9:1, v/v) solution, the sensor exhibited highly selective recognition of Cu2+ amon... 展开>>A novel colorimetric cation sensor bearing phenol, thiol and HC=N groups was designed and synthesized. In a DMSO/H2O (9:1, v/v) solution, the sensor exhibited highly selective recognition of Cu2+ among a range of metal ions tested. In the presence of Cu2+, solutions of the sensor underwent a dramatic color change from colorless to yellow, while the presence of other metal cations such as Zn2+, Pb2+, Cd2+, Ni2+, Co2+, Fe3+, Hg2+, Ag+ and Ca2+ had no effect on the color. The detection limit of the sensor toward Cu2+ is 8.0*10‐7M and an association constant Ka of 4.3*105M‐1 was measured. The sensing of Cu2+ by this sensor was found to be reversible, with the Cu2+-induced color being lost upon addition of EDTA. 收起<<

  • 【作者】

    You-Ming Zhang  Qi Lin  Tai-Bao Wei  Ming Xia Liu 

  • 【作者单位】

    College

  • 【会议名称】

    2011年中西部地区无机化学化工学术研讨会

  • 【会议时间】

    2011-08-01

  • 【会议地点】

    兰州

  • 【主办单位】

    中国化学会

  • 【语种】

    chi

  • 【关键词】

    copper ion  colorimetric sensor schiff base cation recognition