A highly selective naked-eye colorimetric sensor for acetate ion based on 1,10-phenanthroline-2,9-dicarboxyaldehyde-di-(p-substitutedphenyl-hydraz one)

作者：Qiao Yan Hong; Lin Hai; Shao Jie; Lin Hua Kuan

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2009, 72(2): 378-381.

DOI：10.1016/j.saa.2008.10.007

• Colorimetric chemosensor
• Hydrazone
• Phenantroline
• Anion recognition

A new and simple colorimetric sensor with high selectivity for acetate ion based on 1,10-phenanthroline-2,9-dicarboxyaldehyde-di-(p-substitutedphenylhydrazone) receptor 2 has been synthesized. The selectively binding ability of receptor 2 to acetate ion over other anions tested was demonstrated by UV-vis absorption spectroscopy in DMSO. Comparing with other anions studied, the UV-vis absorption spectrum in dimethyl sulfoxide shows significant response toward acetate ion with high selectivity, and meanwhile dramatic color change is observed from yellow to green in the presence of acetate ion (5 x 10(-6) mol/L). Little UV-vis absorption spectrum change has occurred when receptor 2 was titrated with other different guest (F(-), Cl(-), Br(-), I(-), H(2)PO(4) - and OH(-)). In addition, the (1)H NMR spectrum titration shows deprotonation of the receptor in the presence of acetate ion.

• 出版日期2009-3
• 单位南开大学