Anion Recognition of Indole-3-Aldehyde-o-Nitrophenylsemicarbazone

作者：Lin Hai; Li Yawei; Lin Huakuan^*

来源：Chemical Journal of Chinese Universities, 2016, 37(3): 480-485.

DOI：10.7503/cjcu20150835

• Indole-3-aldehyde-o-nitrophenylsemicarbazone
• Fluorescence
• Anion recognition
• Cl- anion

A novel anion recognition receptor with inner hydrogen band, indole-3-aldehyde-o-nitrophenylse. micarbazone, was designed and synthesized via indole-3-aldehyde and o-nitrophenylsemicarbazide. The receptor was characterized by H-1 NMR, ESI-MS and elemental analysis. The anion recognition properties of this receptor with AcO-, F-, H2PO4-, Cl-, Br-, I-, HSO4- were investigated with fluorescence and H-1 NMR spectrometry, respectively. The association constants and association ratio of the receptor with AcO-, F-, H2PO4-, Cl-, Br-, I-, HSO4- are 6. 98, 1. 2; 6. 85, 1. 2; 5. 40, 1. 2; 13. 51, 1. 2; 6. 34, 1. 1; 5. 40, 1. 1; 2. 88, 1. 1, respectively. Because the receptor with inner hydrogen band has special structure and is well matching with Cl- having appropriate bulk and basicity, the results of the fluorescence titration and H-1 NMR titration indicate the receptor has very strong bind capability and very high selectivity for Cl-.

• 出版日期2016-3-10
• 单位南开大学