Synthesis and Ion Binding Properties of Cesium Selective Quadruply Bridged Calix[6]arenes |
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Authors: | Kye Chun Nam Seung Whan Ko Sung Ok Kang Seung Hyun Lee Dae Soon Kim |
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Affiliation: | (1) Department of Chemistry and Institute of Basic Science, Chonnam National University, Kwangju, 500-757, Korea |
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Abstract: | Several quadruply bridged calix[6]arenes were prepared in high yield by the reaction of various 1,4-di-O-alkylated calix[6]arenes with 1,2,4,5-tetrakis-(bromomethyl)benzene in the presence of Cs2CO3. The alkali metal extraction study established that this compound shows the high selectivity toward Cs+ among alkali metal cations. The cesium binding characteristics were investigated with 1H NMR and UV spectroscopy. |
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Keywords: | bathochromic shift calix[6]arene complexation ion selectivity quadruple bridging |
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