Denis Mathieu, Qin Lei, Turner Peter, Jolliffe Katrina A, Goldup Stephen M
Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia.
Angew Chem Int Ed Engl. 2018 May 4;57(19):5315-5319. doi: 10.1002/anie.201713105. Epub 2018 Mar 5.
We report a rotaxane based on a simple urea motif that binds Cl selectively as a separated ion pair with H and reports the anion binding event through a fluorescence switch-on response. The host selectively binds Cl over more basic anions, which deprotonate the framework, and less basic anions, which bind more weakly. The mechanical bond also imparts size selectivity to the ditopic host.
我们报道了一种基于简单脲基序的轮烷，它作为与氢的分离离子对选择性地结合氯离子，并通过荧光开启响应报告阴离子结合事件。主体对氯离子的选择性高于更碱性的阴离子（这些阴离子会使骨架去质子化）和碱性较弱的阴离子（这些阴离子结合较弱）。机械键还赋予双位点主体尺寸选择性。
