A preorganized triarmed bis-triazolylpyridine-calix[4]arene with high affinity and selectivity for minor actinides for nuclear waste treatment

Davide Baccelli; Jonas Stracke; Maria Chiara Gullo; Patrik Weßling; Symeon Grivas; Francesco Rispoli; Stefano Volpi; Andrea Mele; Andreas Geist; Petra J. Panak; Francesco Sansone; Thomas Sittel; Elena Macerata; Alessandro Casnati

doi:10.1039/D5CC02948A

A preorganized triarmed bis-triazolylpyridine-calix[4]arene with high affinity and selectivity for minor actinides for nuclear waste treatment

Davide Baccelli,†^a Jonas Stracke,

†^bc Maria Chiara Gullo,

^a Patrik Weßling,^bc Symeon Grivas,^d Francesco Rispoli,^a Stefano Volpi,

^a Andrea Mele,

^e Andreas Geist,

^c Petra J. Panak,^b Francesco Sansone,

^a Thomas Sittel,

*^c Elena Macerata*^d and Alessandro Casnati

*^a

Author affiliations

* Corresponding authors

^a Dept. of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
E-mail: alessandro.casnati@unipr.it

^b Heidelberg University, Institut für Physikalische Chemie, Im Neuenheimer Feld 253 2, 69120 Heidelberg, Germany
E-mail: thomas.sittel@kit.edu

^c Karlsruhe Institute of Technology, Institute for Nuclear Waste Disposal, P.O. Box 3640, 76021 Karlsruhe, Germany

^d Dept. of Energy, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
E-mail: elena.macerata@polimi.it

^e Dept. of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy

Abstract

The incorporation of three terdentate 2,6-bis-triazolyl-pyridine units on a calix[4]arene gives a preorganized lipophilic ligand with enhanced efficiency in binding trivalent actinides over lanthanides. Combined time-resolved laser-induced fluorescence spectroscopy, and 1D and ¹H–¹⁵N HMQC NMR investigations allowed to propose the structures of the complexes and to provide insights into the actinide selectivity.

Chemical Communications

A preorganized triarmed bis-triazolylpyridine-calix[4]arene with high affinity and selectivity for minor actinides for nuclear waste treatment

Abstract

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A preorganized triarmed bis-triazolylpyridine-calix[4]arene with high affinity and selectivity for minor actinides for nuclear waste treatment

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