A high selective anion colorimetric sensor based on salicylaldehyde for fluoride in aqueous media

作者：Li Jianwei; Lin Hai; Cai Zunsheng; Lin Huakuan

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2009, 72(5): 1062-1065.

DOI：10.1016/j.saa.2008.12.045

• Calorimetric
• Fluoride sensor
• Aqueous solution
• Molecular design

A new and simple salicylaldehyde-based sensor 1 designed for fluoride sensing has been investigated in DMSO and even in the 9/1 DMSO/H(2)O (v/v) Mixtures. The affinity constants of receptor 1 for anionic species in the 9/1 DMSO/H(2)O (v/v) reveal that it is sensitive to F. Also, the color changes induced by anions can provide a way of detection by 'naked-eye'. These result can be substantiated by the spectrum changes upon the addition of 25 equiv. anions to 1 in the 9/1 DMSO/H(2)O solution. The further insights to the nature of interactions between the sensor 1and F were investigated by (1)H NMR titration experiments in 9/1 DMSO-d(6)/H(2)O (v/v). In addition, the proposed binding mode between 1 and F(-) was suggested.

• 出版日期2009-6
• 单位南开大学