A colorimetric chemosensor based on new water-soluble PODIPY dye for Hg2+ detection |
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| Authors: | Xin-Dong Jiang Hai-Feng Yu Jiu-Li Zhao Chang-Liang Sun Ying Xie Lin-Jiu Xiao |
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| Institution: | 1.College of Applied Chemistry, Key Laboratory of Rare-Earth Chemistry and Applying Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, China;2.Center of Physical and Chemistry Test, Shenyang University of Chemical Technology, Shenyang 110142, China |
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| Abstract: | The phosphorus-containing PODIPY 1 as a chemosensor can detect Hg2+ by a color change from pink to violet red without the use of any instrumentation. PODIPY 1 was selective to Hg2+ with a remarkable absorption change, and addition of other relevant metal ions caused almost no absorption change. The new PODIPY dye 1 was sensitive to various concentrations of Hg2+. The energy gap between the HOMO and LUMO of the metal complex 1-Hg2+ is smaller than that of chemosensor 1, which is in good agreement with the red shift in the absorption observed upon treatment of 1 with Hg2+. The 1-based test strips were easily fabricated and low-cost, useful in practical and efficient Hg2+ test kits. |
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| Keywords: | PODIPY Hg2+ Colorimetric DFT Chemosensor |
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