Issue 25, 2015

Chemical controls on uranyl citrate speciation and the self-assembly of nanoscale macrocycles and sandwich complexes in aqueous solutions

Abstract

Uranyl citrate forms trimeric species at pH > 5.5, but exact structural characteristics of these important oligomers have not previously been reported. Crystallization and structural characterization of the trimers suggests the self-assembly of the 3 : 3 and 3 : 2 U : Cit complexes into larger sandwich and macrocyclic molecules. Raman spectroscopy and ESI-MS have been utilized to investigate the relative abundance of these species in solution under varying pH and citrate concentrations. Additional dynamic light scattering experiments indicate that self-assembly of the larger molecules does occur in aqueous solution.

Graphical abstract: Chemical controls on uranyl citrate speciation and the self-assembly of nanoscale macrocycles and sandwich complexes in aqueous solutions

Supplementary files

Article information

Article type
Communication
Submitted
31 Here 2014
Accepted
21 Du 2014
First published
24 Du 2014

Chem. Commun., 2015,51, 5306-5309

Author version available

Chemical controls on uranyl citrate speciation and the self-assembly of nanoscale macrocycles and sandwich complexes in aqueous solutions

M. Basile, D. K. Unruh, K. Gojdas, E. Flores, L. Streicher and T. Z. Forbes, Chem. Commun., 2015, 51, 5306 DOI: 10.1039/C4CC08657K

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