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

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
Chemical communications (Cambridge, England), Vol.51(25), pp.5306-5309
03/28/2015
DOI: 10.1039/c4cc08657k
PMID: 25469487

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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.
Citric Acid - chemistry Macrocyclic Compounds - chemistry Solutions Uranium Compounds - chemistry Water - chemistry Nanostructures - chemistry Macrocyclic Compounds - chemical synthesis

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