Unprecedented Increase in Affinity for EuIII over AmIII through Silica Grafting of a Carbamoylmethylphosphine Oxide-Calix[4]arene Site

Erin M. May,Andrew Solovyov,Yijun Guo,Andriy B. Drapailo, Yury Matveev,Vitaly I. Kalchenko,Heino Nitsche,Alexander Katz

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY（2016）

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摘要

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. 3

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关键词

Actinides,Lanthanides,Calixarenes,Supramolecular chemistry,Cation recognition

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