一种基于水杨醛的用于水介质中氟化物的高选择性阴离子比色传感器。
A high selective anion colorimetric sensor based on salicylaldehyde for fluoride in aqueous media.
作者信息
Li Jianwei, Lin Hai, Cai Zunsheng, Lin Huakuan
机构信息
Department of Chemistry, Nankai University, Ttianjin Weijin Road 94#, Tianjin 300071, People's Republic of China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2009 Jun;72(5):1062-5. doi: 10.1016/j.saa.2008.12.045. Epub 2009 Jan 6.
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 25equiv. anions to 1 in the 9/1 DMSO/H(2)O solution. The further insights to the nature of interactions between the sensor 1 and 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.
一种新型的、基于水杨醛的用于氟化物传感的简单传感器1已在二甲基亚砜（DMSO）甚至9/1 DMSO/H₂O（体积比）混合物中进行了研究。受体1在9/1 DMSO/H₂O（体积比）中对阴离子的亲和常数表明它对F⁻敏感。此外，阴离子引起的颜色变化可以提供一种“裸眼”检测方法。这些结果可以通过向9/1 DMSO/H₂O溶液中的1加入25当量阴离子后的光谱变化得到证实。通过在9/1 DMSO-d₆/H₂O（体积比）中进行的¹H NMR滴定实验，进一步研究了传感器1与F⁻之间相互作用的本质。此外，还提出了1与F⁻之间的拟结合模式。
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