A pillar[5]arene-based molecular grapple of hexafluorophosphate |
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| Authors: | Zibin Zhang Kechang Sun Shijun Li Guocan Yu |
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| Affiliation: | Hangzhou Normal University, Hangzhou 310036, China; Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda 20892, United States |
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| Abstract: | A symmetric pillararene-based receptor containing ten triazole units was synthesized. Interestingly, it formed 1:1 complexes instead of 1:2 with different halide anions. This was caused by the cooperative multivalent hydrogen-bond interactions between the triazole protons on one side of the receptor and the halide anion, which changed its structure from pillar to conical. However, by the regulation of the effector F-, it can work like an excavator grapple selectively grasps a PF6- anion. |
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| Keywords: | Pillar[5]arene Molecular machine Anion receptors Molecular recognition |
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