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A new fluorescent sensor bearing three dansyl fluorophores for highly sensitive and selective detection of mercury(II) ions |
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| Authors: | Nantanit Wanichacheva Ploypan KumsornRapeepat Sangsuwan Anyanee KamkaewVannajan Sanghiran Lee Kate Grudpan |
| Institution: | a Department of Chemistry, Faculty of Science, Silpakorn University, Nakorn Pathom 73000, Thailand b Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand c Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand d Center of Excellence for Innovation in Analytical Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand |
| Abstract: | A novel fluorometric sensor bearing three dansyl moieties based on tris2-(2-aminoethylthio)ethyl]amine was prepared by a simple approach using a conventional two-step synthesis. The sensor exhibits highly Hg2+-selective ON-OFF fluorescence quenching behavior in aqueous acetonitrile solutions and is shown to discriminate various competing metal ions, particularly Cu2+, Ag+, and Pb2+ as well as Ca2+, Cd2+, Co2+, Fe3+, Mn2+, Na+, Ni2+, and Zn2+, with a detection limit of 1.15 × 10−7 M or 23 ppb. |
| Keywords: | Mercury sensor Fluoroionophore Hg2+-selectivity Dansyl fluorophore |
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