Abstract
A simple colorimetric and turn-on fluorescence receptor FT (thiophene appended fluorescein-hydrazone derivative) was prepared and its cation-sensing properties were investigated. Receptor FT displayed a selective colorimetric change (from colorless to orange color) upon binding to Hg2+ in DMSO/H2O (1:9, v/v) solution. The association constant of FT-Hg2+ complex was calculated to be 3.03 × 109 M−1, and the detection limit for Hg2+ was found to be 0.24 ppm.
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Ministry of Science and Technology, R. O. C. (grant numbers: 104-2113-M-018-002).
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The experimental procedures and the 1H NMR, 13C NMR and ESI-MS spectra are available. Supplementary data associated with this article can be found.
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Chiou, YR., Wan, CF. & Wu, AT. A Selective Colorimetric and Turn-on Fluorescent Chemosensor for Hg2+ in Aqueous Solution. J Fluoresc 27, 317–322 (2017). https://doi.org/10.1007/s10895-016-1960-7
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DOI: https://doi.org/10.1007/s10895-016-1960-7