A new fluorogenic mono-ionizable calix[4]arene dansylcarboxamide as a selective chemosensor of soft metal ions, Tl and Hg |
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| Authors: | Vladimir S Talanov |
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| Institution: | Department of Chemistry, Howard University, 525 College Street, NW, Washington, DC 20059, United States |
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| Abstract: | A new fluorogenic calix4]arene containing one pendent N-dansylcarboxamide group has been synthesized. The ligand demonstrates selective optical recognition of Tl+ and Hg2+ in solvent extraction from aqueous solutions with high content of Na+. Complexation of Tl+ and Hg2+ produces contrasting changes in the fluorescence spectrum of this sensor. Partial cone is the dominant calixarene conformation in the complex with Tl+. |
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| Keywords: | Optical chemosensor Fluorescence Calix[4]arene Thallium(I) Mercury(II) |
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