Novel coumarin fluorescent dyes: Synthesis, structural characterization and recognition behavior towards Cu(II) and Ni(II)

作者：Li, Hongqi^*; Cai, Li; Li, Jinxing; Hu, Yixin; Zhou, Pingping; Zhang, Jiming

来源：Dyes and Pigments, 2011, 91(3): 309-316.

DOI：10.1016/j.dyepig.2011.05.011

• Fluorescent
• Coumarin
• Dye
• Recognition
• Cu(II) ion
• Ni(II) ion

A series of novel coumarin dyes (3-12) were designed and synthesized. The structures of the dyes were characterized by IR, H-1 NMR, C-13 NMR, F-19 NMR, MS and single crystal X-ray diffraction. 3-(2-Benzoylhydrazonotrifluoroethyl)-7-(N,N-diethylamino)coumarin (11) could recognize Cu2+ and Ni2+ selectively in aqueous solution. Upon addition of Cu2+ or Ni2+ 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 Cu2+ 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 Cu2+ and Ni2+.

• 出版日期2011-12
• 单位东华大学