Selective colorimetric and ratiometric signaling of Cu2+ ions by thiosemicarbazone-appended 3-hydroxynaphthalimide
作者： Hyunji Park , Suk-Kyu Chang
DOI: 10.1016/J.SNB.2015.05.064
关键词: Analytical chemistry 、 Masking agent 、 Aqueous two-phase system 、 Inorganic chemistry 、 Metal ions in aqueous solution 、 Iodide 、 Ion 、 Detection limit 、 Chemistry 、 Selectivity 、 Qualitative inorganic analysis
摘要: Abstract The thiosemicarbazone derivative of 3-hydroxynaphthalimide 1 was investigated as a colorimetric sensor for Cu2+ ions. Sensor showed pronounced selectivity and its signaling not affected by the presence common metal ions anions other than Hg2+. Interference from Hg2+ readily suppressed using iodide masking agents. formed 1:1 complex with an association constant 1.38 × 105 M−1. through color change yellow to orange observed detection limit 5.4 × 10−6 M in DMSO. To demonstrate practical application, levels simulated wastewater carried out. may be useful determination aqueous phase solvent extraction 1.6 × 10−5 M.
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