Lipophilic Diamides as Ionophores for Alkali and Alkaline Earth Metal Cations
- 17 March 1982
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 65 (2) , 538-545
- https://doi.org/10.1002/hlca.19820650211
Abstract
A series of lipophilic N, N, N′,N′‐tetrasubstituted diamides were prepared and their selectivity in solvent polymeric membranes was studied, cis‐N, N, N′, N′‐Tetraisobutylcyclohexane‐1,2‐dicarboxamide induces a selectivity in membranes for Li+over alkaline earth metal cations and other alkali metal cations by a factor of about 1000 and 100 respectively. The ionophore N, N′‐diheptyl‐N,N′‐dimethylethylmalonamide is an attractive candidate for the use in microelectrodes for the determination of intracellular Mg2+‐activities.Keywords
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