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Potassium selective calix[4]semitubes

Webber, P.R.A., Cowley, A., Drew, M.G.B. and Beer, P.D. (2003) Potassium selective calix[4]semitubes. Chemistry- A European Journal, 9 (11). pp. 2439-2446. ISSN 0947-6539

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A new class of ionophore consisting of two calix[4]arene units linked through the lower rim by two ethylene chains, in combination with propyl ether and phenolic functional groups, has been developed. These calix[4]semitube molecules exhibit remarkable selectivity and fast complexation kinetics for potassium over all Group 1 metal cations. Molecular modelling studies, using structural models derived from crystallographic data, suggest the potassium cation is complexed by a horizontal, side-on route and not through the calix[4]arene annulus. The length of the bridging alkylene chain between the respective calix[4]arenes of the semitube structure dictates the strength and selectivity of alkali metal cation binding.

Item Type:Article
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11703
Uncontrolled Keywords:alkali metals, calixarenes, ionophores, potassium, supramolecular chemistry , RAY-DIFFRACTION DATA, MOLECULAR-DYNAMICS, METAL-IONS, CALIX<4>ARENE, CALIXARENES, RECOGNITION, CHANNEL, DESIGN, FIELD

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