Three new hydrazone, based on azo-isonicotinohydrazide derivatives, have been designed, synthesized and characterized by FT-IR, 1H NMR and 13C NMR spectroscopy. The new compounds were designed to act as selective molecular sensors for naked-eye detection of acetate anion. To study the effect of the substituent at certain position in the main structure on the selectivity of the sensor, the compounds were designed to have –CH3, –H or –NO2 at that position. Solutions of different anions (F−, H2PO4−, NO2−, NO3−, Cl−, HSO4−) and AcO− were used to test the selectivity. The results revealed that the compound with electron withdrawing group (NO2) interacts selectively with acetate producing a significant feasible color change which makes it considered as selective molecular sensor for naked-eye detection of acetate. The dissociation constant for AcO− with the new sensor was also determined.
通过傅立叶变换红外光谱、1H NMR 和 13C NMR 光谱,设计、合成并表征了基于偶氮
异烟酸酰
肼衍
生物的三种新腙。这些新化合物被设计成肉眼检测
醋酸阴离子的选择性分子传感器。为了研究主结构中某些位置的取代基对传感器选择性的影响,我们设计了在该位置具有 -
CH3、-H 或 -
NO2 的化合物。使用不同阴离子(F-、H2PO4-、 -、
NO3-、Cl-、HSO4-)和 AcO- 的溶液来测试其选择性。结果表明,带有取电子基团( )的化合物可选择性地与
醋酸发生作用,产生明显可行的颜色变化,因此被认为是肉眼检测
醋酸的选择性分子传感器。此外,还测定了新传感器与 AcO- 的解离常数。