Ligands have been synthesised which offer good selectivity for lithium ions over sodium based on substituted 14-crown-4 derivatives which bear diamide groups on the ethylene chain or, less effectively, on the central carbon of the propylene chain. The behaviour of potentiometric membrane electrodes based on these ionophores is compared.
S. Faulkner, R. Kataky, D. Parker and A. Teasdale, J. Chem. Soc., Perkin Trans. 2, 1995, 1761 DOI: 10.1039/P29950001761
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