3,7-Dioxaazelaamides as Ionophores for Lithium Ion Selective Liquid Membrane Electrodes |
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| Authors: | Erich Metzger,Roland Aeschimann,Martin Egli,Gaby Suter,Ren Dohner,Daniel Ammann,Max Dobler,Wilhelm Simon |
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| Affiliation: | Erich Metzger,Roland Aeschimann,Martin Egli,Gaby Suter,René Dohner,Daniel Ammann,Max Dobler,Wilhelm Simon |
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| Abstract: | Lipophilic neutral carriers were synthesized which show Li+/Na+ selectivities of up to ca. 80 in highly lipophilic liquid membranes. The sensor membranes exhibit improved response times and increased lifetimes as compared to systems described earlier. They allow reliable measurements of Li+ in blood serum within the clinical concentration range. A 1:1 Li+/ionophore complex of one representative (N,N,N′,N′-tetracyclohexyl-5,5-dimethyl-3,7-dioxaazelaamide) has been prepared, and its structure was elucidated by X-ray analysis. |
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