New proton-ionizable, cesium-selective calix[4]arene-bis(crown-6-ethers) with markedly enhanced extraction efficiency
作者:Vladimir S. Talanov、Galina G. Talanova、Richard A. Bartsch
DOI:10.1016/s0040-4039(00)01457-x
日期:2000.10
The first 1,3-alternate calix[4]arene-bis(crown-6-ethers) with a proton-ionizable group located in front of one crown ether cavity are synthesized. Compared with an analog that has no proton-ionizable group, the two new ligands possess markedly higher Cs+ extraction efficiency. (C) 2000 Elsevier Science Ltd. All rights reserved.