Abstract

The antibacterial activity of five crown ethers (15-crown-5, 18-crown-6, benzo-18-crown-6, 4′-methylbenzo-18-crown-6 and dicyclohexano-19-crown-6) along with their corresponding ion transport efficiency and ion selectivity among five alkali metal ions (lithium, sodium, potassium, rabidium and cesium) are studied. It is found that the toxicity of the crown ethers bears an identical trend as that exists in their capability of transporting potassium ion.

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