Synthesis and anion binding properties of 1,8-disulfonamidocarbazole dipyrromethane Schiff-base macrocycle & its amine analogue
作者:Feng Zhang、Yu-hui Zhou、Xiao-ping Bao
DOI:10.1080/10610278.2015.1108417
日期:2016.4.2
A novel 1,8-disulfonamidocarbazole-dipyrromethane Schiff-base macrocycle (1) and its amine analogue (2) were designed and synthesised, and their anion binding properties were studied via UV-vis and H-1 NMR titration spectra. The obtained results showed that a small change in the macrocyclic structure (by reducing imines into the corresponding amines) produced a remarkable impact on its binding affinity and selectivity for anions. For example, macrocycle 1 displayed a 7.9:1 F-/H2PO4- selectivity; however, its amine analogue 2 showed a 78.5:1 F-/H2PO4- selectivity.