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- W1987251213 abstract "An effective Hg 2+ -specific probe 1 was designed and prepared based on Phthalimido Gly modified rhodamine B. The sensing behavior of probe 1 was studied by UV-Vis and fluorescence spectroscopy. Probe 1 showed excellent high selectivity and sensitivity towards Hg 2+ over commonly coexistent metal ions in neutral solution, which could be attributed to the Hg 2+ -triggered ring opening of the spirolactam of the rhodamine moiety and the formation of a 1 : 1 1 -Hg 2+ complex. The limit of detection (LOD) based on<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M2><mml:mrow><mml:mn>3</mml:mn><mml:msub><mml:mi>δ</mml:mi><mml:mrow><mml:mtext>blank</mml:mtext></mml:mrow></mml:msub><mml:mo>/</mml:mo><mml:mi>k</mml:mi></mml:mrow></mml:math>was calculated to be 2.8 × 10 −8 M, as well as an excellent linear relationship with the concentration of Hg 2+ in the range from 0.1 × 10 −6 to 1.0 × 10 −6 mol/L (<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M3><mml:msup><mml:mi>R</mml:mi><mml:mn>2</mml:mn></mml:msup><mml:mo>=</mml:mo><mml:mn>0.98927</mml:mn></mml:math>). In addition, the effects of pH, coexisting metal ions, and the reversibility were investigated in detail." @default.
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- W1987251213 date "2013-01-01" @default.
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- W1987251213 title "Recognition Preference of Rhodamine Derivative Bearing Phthalimido Gly forHg2+by UV-Vis and Fluorescence Spectroscopy" @default.
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- W1987251213 doi "https://doi.org/10.1155/2013/878234" @default.
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