Synthesis of New Calixarene-Phosphine Oxides and Their Extraction Properties in Ionic Liquids

Abstract New calix[4]arenes functionalized by Alk2P(O)CH2 and N-methylimidazolium groups at the opposite rims of the macrocyclic skeleton have been synthesized and characterized. Their extraction properties towards of Eu3+ and Am3+ in ionic liquid were investigated.