TY - JOUR

T1 - Novel phosphorylated calixarenes for the recognition of f-elements

AU - Karavan, Maria

AU - Arnaud-Neu, Françoise

AU - Hubscher-Bruder, Véronique

AU - Smirnov, Igor

AU - Kalchenko, Vitaly

PY - 2010/1/1

Y1 - 2010/1/1

N2 - The binding properties of three series of phosphorylated calixarene derivatives bearing phosphine oxide or phosphonate groups either at the wide or the narrow rims have been investigated towards some representative lanthanide and actinide ions using several approaches: (i) liquid-liquid extraction of europium, americium, thorium and uranyl ions from nitric acid solutions into the two diluents m-nitrobenzotrifluoride (m-NBTF) or dichloromethane; (ii) complexation in single media (methanol and acetonitrile) followed by UV-spectrophotometric and isoperibolic (micro)calorimetric titrations (ITC). The latter technique was found to be very useful for the determination of the stoichiometries of the complexes formed, in particular when the complexation did not induce significant spectral changes. It also provided a full thermodynamic characterization of these new systems. The influence of some structural features of the ligands as the nature of the substituents and the condensation degree of the calixarene moiety, on the distribution coefficients and on the complexation thermodynamic parameters has been established.

AB - The binding properties of three series of phosphorylated calixarene derivatives bearing phosphine oxide or phosphonate groups either at the wide or the narrow rims have been investigated towards some representative lanthanide and actinide ions using several approaches: (i) liquid-liquid extraction of europium, americium, thorium and uranyl ions from nitric acid solutions into the two diluents m-nitrobenzotrifluoride (m-NBTF) or dichloromethane; (ii) complexation in single media (methanol and acetonitrile) followed by UV-spectrophotometric and isoperibolic (micro)calorimetric titrations (ITC). The latter technique was found to be very useful for the determination of the stoichiometries of the complexes formed, in particular when the complexation did not induce significant spectral changes. It also provided a full thermodynamic characterization of these new systems. The influence of some structural features of the ligands as the nature of the substituents and the condensation degree of the calixarene moiety, on the distribution coefficients and on the complexation thermodynamic parameters has been established.

KW - Actinides

KW - Calixarenes

KW - Complexation

KW - Extraction

KW - Lanthanides

KW - Phosphine oxides

KW - Phosphonates

UR - http://www.scopus.com/inward/record.url?scp=74749089111&partnerID=8YFLogxK

U2 - 10.1007/s10847-009-9660-4

DO - 10.1007/s10847-009-9660-4

M3 - Article

AN - SCOPUS:74749089111

VL - 66

SP - 113

EP - 123

JO - Journal of Inclusion Phenomena and Macrocyclic Chemistry

JF - Journal of Inclusion Phenomena and Macrocyclic Chemistry

SN - 1388-3127

IS - 1

ER -