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- W2012106988 abstract "A series of novel coumarin dyes ( 3–12 ) were designed and synthesized. The structures of the dyes were characterized by IR, 1 H NMR, 13 C NMR, 19 F NMR, MS and single crystal X-ray diffraction. 3-(2-Benzoylhydrazonotrifluoroethyl)-7-( N , N -diethylamino)coumarin ( 11 ) could recognize Cu 2+ and Ni 2+ selectively in aqueous solution. Upon addition of Cu 2+ or Ni 2+ to 11 a blue shift or a bathochromatic shift of the absorption band was observed while the emission band blue-shifted with decrease in the fluorescence intensity . Upon addition of Cu 2+ the color of the solution of 11 changed from orange to red. The results showed that 11 could be used as an optical chemosensor of Cu 2+ and Ni 2+ . ► Novel coumarin dyes were synthesized and characterized. ► A coumarin dye ( 11 ) could recognize Cu 2+ and Ni 2+ selectively in aqueous solution. ► Upon addition of Cu 2+ the color of the coumarin solution changed from orange to red." @default.
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- W2012106988 date "2011-12-01" @default.
- W2012106988 modified "2023-10-16" @default.
- W2012106988 title "Novel coumarin fluorescent dyes: Synthesis, structural characterization and recognition behavior towards Cu(II) and Ni(II)" @default.
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- W2012106988 doi "https://doi.org/10.1016/j.dyepig.2011.05.011" @default.
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