Calixarene Having a Convergent Carboxylic Acid Function: Synthesis and Ion Binding Properties of a New Cs^+ - selective Ionophore
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Calixarene bearing a convergent carboxylic acid function employing the Kemp's triacid motif exhibited a pronounced selective ionophoric behavior toward Cs<SUP>+</SUP> over other alkali metal ions. The selectivities of calixarene-acid for Cs<SUP>+</SUP> over Rb<SUP>+</SUP>, K<SUP>+</SUP>, and Na<SUP>+</SUP> ions assessed by competitive transport experiments were 7.9, 26, and 121, respectively.
- Chemistry Letters
Chemistry Letters 1999(6), 493-494, 1999-06-05
The Chemical Society of Japan