Three acylhydrazone-based receptors have been synthesized. Their anion recognition properties were studied by UV-visible and 1H NMR spectroscopy. The results showed that the receptors 1, 2 and 3 all had a stronger complexity with F-, H2PO4- and CH3COO-, but no evident binding with Cl-, Br-, I-, NO3- and HSO4-. Moreover,upon addition of such anions as F-, H2PO4- and CH3COO-, 1 and 2 produced obvious colour changes. The recognition mechanism and binding mode were discussed.
三种酰
肼受体已经合成。通过紫外可见光和1H NMR光谱研究了它们的阴离子识别特性。结果表明,受体1、2和3与F-、H2PO4-和CH3COO-的结合能力更强,但与Cl-、Br-、I-、
NO3-和HSO4-的结合不明显。此外,在添加F-、H2PO4-和CH3COO-等阴离子后,1和2会产生明显的颜色变化。对识别机制和结合模式进行了讨论。