Anion recognition using preorganized thiourea functionalized [3]polynorbornane receptors |
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| Authors: | Pfeffer Frederick M Gunnlaugsson Thorfinnur Jensen Paul Kruger Paul E |
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| Institution: | School of Biological and Chemical Sciences, Deakin University, Waurn Ponds 3217, Australia. thefef@deakin.edu.au |
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| Abstract: | structure: see text] A new family of 3]polynorbornane frameworks exhibiting conformationally preorganized aromatic thiourea (cleft-like) receptors have been designed and synthesized for anion recognition. These show excellent affinity for the biologically relevant dihydrogenphosphate (H(2)PO(4)(-)) and dihydrogenpyrophosphate (H(2)P(2)O(7)(2)(-)) anions (among others), which are bound in 1:1 and 2:1 (host:anion) ratio, respectively. Moreover, visually striking color changes accompany guest binding, enabling this family to act as colorimetric anion sensors. |
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