A new flexible anthracene linked benzimidazolium-based receptor 1 has been designed, synthesized and its binding properties have been studied by NMR, UV–vis and fluorescence spectroscopic techniques. While the receptor 1 exhibits a greater change in emission in the presence of tetrabutylammonium dihydrogenphosphate in CH3CN over the other anions studied, iodide is selectively preferred in CHCl3 containing 0.1% CH3CN. Upon complexation of dihydrogen phosphate and iodide, the emission of 1 gradually decreased without showing any other characteristic change in the spectra. Hydrogen bonding and charge–charge interactions interplay simultaneously in a cooperative manner for selectivity in the binding process.
一种新的柔性
蒽联
苯并咪唑基受体1已被设计、合成,并通过核磁共振、紫外-可见光和荧光光谱技术研究其结合性能。虽然受体1在存在四丁基
铵二氢
磷酸盐时在CH3CN中的发射产生更大变化,而在
CHCl3中含有0.1% CH3CN时,
碘离子则被选择性地优先选择。在与二氢
磷酸盐和
碘离子形成络合物后,受体1的发射逐渐减少,而光谱中没有显示其他特征性变化。氢键和电荷-电荷相互作用同时协同作用于结合过程中的选择性。