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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.


IMPACT FACTOR 2018: 1.339

CiteScore 2018: 1.20

SCImago Journal Rank (SJR) 2018: 0.333
Source Normalized Impact per Paper (SNIP) 2018: 0.720

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ISSN
2193-3405
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Volume 99, Issue 12

Issues

Luminescence study on the solvation of Cm(III) in binary aqueous solvent mixtures

S. Trumm / G. Lieser
  • 1 Karlsruhe Institute of Technology, Institut für Anorganische Chemie, Karlsruhe, Deutschland
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Petra J. Panak
  • 2 Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, Karlsruhe, Deutschland
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2011-08-22 | DOI: https://doi.org/10.1524/ract.2011.1877

Abstract

The preferential solvation of Cm(III) in binary aqueous mixtures of MeOH, tBuOH, DMSO, MeCN and acetone is studied at varied solvent composition. Solvation is investigated by time-resolved laser fluorescence spectroscopy and emission spectra and fluorescence lifetime data are obtained. At high mole fractions of organic solvent, preferential solvation of Cm(III) increases in the order: Me2CO < tBuOH ≈ MeOH < MeCN < H2O < DMSO. Thermodynamic data are derived from the spectroscopic results showing small positive standard Gibbs energies for the transfer of Cm(III) into the various solvent mixtures except for DMSO mixtures where negative values are found. The spectroscopically obtained enthalpies of transfer are fitted to a solvation model using the model parameters Δ Δ Hº12 and (αn+βN)º, rendering valuable information on the interaction of Cm(III) with the solvent molecules. Cm(III)-solvent interaction increases in the order: tBuOH < MeCN < MeOH < DMSO.

Keywords: Curium; Solvation; Fluorescence spectroscopy; Thermodynamics

About the article

* Correspondence address: Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, P.O. Box 3640, 76021 Karlsruhe


Published Online: 2011-08-22

Published in Print: 2011-12-01


Citation Information: Radiochimica Acta International journal for chemical aspects of nuclear science and technology, Volume 99, Issue 12, Pages 783–790, ISSN (Print) 2193-3405 , DOI: https://doi.org/10.1524/ract.2011.1877.

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