N. Wanichacheva, A. Kamkaew, S. Watpathomsub
Sep 11, 2010
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Influential Citations
13
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Journal
Chemistry Letters
Abstract
A novel fluorometric sensor possessing two dansyl moieties based on 2-[3-(2-aminoethylsulfanyl)propylsulfanyl]ethanamine 1 was prepared by a ready synthetic approach using a conventional two-step synthesis. 1 exhibits highly sensitive and selective on-off Hg 2+ fluorescence quenching behavior in aqueous acetonitrile solutions and is shown to discriminate various competing metal ions such as Cu 2+ , Ag + , Ca 2+ , Mn 2+ Zn 2+ , Ba 2+ , Cd 2+ , Co 2+ , Na + and K + exhibiting a detection limit of 7nM or 1.4 ppb with a working range of 1.8-15 ppb.