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Lipophilic Diamides as Ionophores for Alkali and Alkaline Earth Metal Cations

✍ Scribed by Daniel Erne; Daniel Ammann; Alex F. Zhukov; Felix Behm; Ernö Pretsch; Wilthelm Simon

Publisher
John Wiley and Sons
Year
1982
Tongue
German
Weight
489 KB
Volume
65
Category
Article
ISSN
0018-019X

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✦ Synopsis

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 Mg^2+^‐activities.

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