Li Jianwei, Lin Hai, Cai Zunsheng, Lin Huakuan
Department of Chemistry, Nankai University, Ttianjin Weijin Road 94#, Tianjin 300071, People's Republic of China.
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。
