Unprecedented Increase in Affinity for Eu^III over Am^III through Silica Grafting of a Carbamoylmethylphosphine Oxide-Calix[4]arene Site

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• 作者：Erin M. May ; Andrew Solovyov ; Yijun Guo ; Andriy Drapailo ; Yury Matveev ; Vitaly Kalchenko ; Heino Nitsche and Alexander Katz
• 刊名：European Journal of Inorganic Chemistry
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：2016
• 期：28
• 页码：4542-4545
• 全文大小：658K
• ISSN：1099-0682c

文摘

Grafting of a carbamoylmethylphosphine oxide (CMPO) calix[4]arene ligand to the silica surface yields an anchored host site that displays an unusual 22.4-fold higher affinity (k_D value) for Eu^III relative to Am^III. This selective cation recognition is in stark contrast to a more flexible propoxy-tethered CMPO-calix[4]arene site on silica.