Dynamic combinatorial libraries for the recognition of heavy metal ions |
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Authors: | Klein Jörg M Saggiomo Vittorio Reck Lisa Lüning Ulrich Sanders Jeremy K M |
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Affiliation: | University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, UK CB2 1EW. |
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Abstract: | We present the use of hydrazone dynamic combinatorial libraries (DCLs) to identify macrocyclic receptors that are selective for alkaline earth metal ions over alkali metal ions. In particular, the toxic heavy metal ions Sr(2+) and Ba(2+) induce characteristic changes in the DCLs. Four macrocycles were isolated and characterised by LCMS, HRMS, NMR and X-ray crystallography; binding studies by UV-Vis spectroscopy confirm the selectivity observed in the DCLs. |
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