Author/Authors :
Pingshan Wang، نويسنده , , Mohamed Saadioui، نويسنده , , Christian Schmidt، نويسنده , , Volker B?hmer، نويسنده , , Valéry Host، نويسنده , , Jean François Desreux، نويسنده , , Jean-François Dozol، نويسنده ,
Abstract :
Calix[4]arenes substituted at the narrow or wide rim by eight carbamoylmethyl-phosphine oxide (CMPO) functions in a dendritic manner were synthesised and studied in extraction of Eu3+ and Am3+ from aqueous nitric acid into o-nitrophenylhexyl ether. 1H NMR relaxivity titrations for a wide rim octa-CMPO reveal the clear formation of a solvent-free 1:2 ligand/metal complex, while the wide rim tetra-CMPO formed oligomeric complexes under similar conditions.
Keywords :
Extraction , CMPO , Dendrimers , NMR relaxation
