Synthesis, characterization and anion recognition studies of new fluorescent alkyl bis(naphthylureylbenzamide)-based receptors
作者:Luis Miguel Lopéz-Martínez、José García-Elías、Adrián Ochoa-Terán、Hisila Santacruz Ortega、Karen Ochoa-Lara、César Ulises Montaño-Medina、Anatoli K. Yatsimirsky、José Z. Ramírez、Victoria Labastida-Galván、Mario Ordoñez
DOI:10.1016/j.tet.2019.130815
日期:2020.1
The synthesis of new alkyl (C3 to C8) bis(naphthylureylbenzamide)-based receptors and the study of their interaction with anions by UV–Vis, molecular fluorescence and 1H NMR were performed. The results suggest both ureylbenzamide units participate in the complexion with anions due to their inherent flexibility, which promotes a cooperative binding effect. The position of the urea and amide groups,
进行了新的基于烷基(C 3至C 8)双(萘基脲基苯甲酰胺)的受体的合成,并通过UV-Vis,分子荧光和1 H NMR研究了它们与阴离子的相互作用。结果表明,两个脲基苯甲酰胺单元均因其固有的柔韧性而与阴离子一起参与络合,从而促进了协同结合作用。脲基和酰胺基的位置以及烷基链长对荧光反应有重要影响。元受体呈现ON 1 / OFF / ON 2反应,而邻受体具有OFF / ON回复。磷酸二氢盐和焦磷酸氢盐由于对这些阴离子具有高亲和力,因此观察到了最显着的变化。的1项1 H NMR研究表明取决于脲和酰胺基团的相对位置在相互作用位点的差异,作为孔中作为中,阴离子型。最后,DFT对配合物的理论分析支持了实验结果。