Ionic imprinting effect in gadolinium/lanthanum separation

A new method based on the use of cation imprinted polymers to separate lanthanum and gadolinium cations is proposed. Using a styrene-DTPA monomer specific of one of these elements, an improvement in separation selectivity is observed when a tailor-made gadolinium imprinted polymer is compared to a n...

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Bibliographic Details
Published in:Tetrahedron letters 1998, Vol.39 (47), p.8651-8654
Main Authors: Garcia, Regis, Pinel, Catherine, Madic, Charles, Lemaire, Marc
Format: Article
Language:English
Subjects:
Catalysis
Chemical Sciences
complexes
lanthanides
molecular recognition
Polymers
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Summary:A new method based on the use of cation imprinted polymers to separate lanthanum and gadolinium cations is proposed. Using a styrene-DTPA monomer specific of one of these elements, an improvement in separation selectivity is observed when a tailor-made gadolinium imprinted polymer is compared to a non-imprinted or blank polymer. Copolymerisation of gadolinium nitrate with divinylbenzene-DTPA derivative leads to imprinted materials which were tested in extraction to give a gadolinium/lanthanum separation factor of 13.6.
ISSN:0040-4039
1873-3581
DOI:10.1016/S0040-4039(98)01970-4