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Experimental evidence for the influence of the excitation wavelength on the value of the equilibrium constant as determined by Time-Resolved Emission Spectroscopy (TRES)
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Isabelle Billard
Veröffentlicht/Copyright:
25. September 2009
Summary
In the case of a rapid photochemical process, a new theoretical result relating time-resolved emission spectroscopy data to three physical parameters of the chemical system has been recently proposed. This previous work, based on a simulation study, is experimentally evidenced in the present paper, using europium/acetate as a model system. The comparison of the emission spectra obtained upon direct excitation of europium (394 nm) and by use of the “antenna effect” (266 nm) evidences the occurring of a back-dissociation of excited europium complexes to form solvated excited free europium ions.
Published Online: 2009-9-25
Published in Print: 2006-5-1
© by Oldenbourg Wissenschaftsverlag, München
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Schlagwörter für diesen Artikel
Fluorescence;
Eu(III);
Cm(III);
Photochemistry;
Equilibrium constant
Artikel in diesem Heft
- Investigations on the thermal release of iodine from liquid eutectic lead-bismuth alloy
- Sorption of Cm(III) onto different Feldspar surfaces: a TRLFS study
- Chemical speciation of heterogeneously reduced Pu in synthetic brines
- Separation of trivalent actinides from lanthanides in an acetate buffer solution using Cyanex 301
- N, N′-dimethyl-N, N′-dibutyl tetradecyl malonamide impregnated magnetic particles for the extraction and separation of radionuclides from nuclear waste streams
- Experimental evidence for the influence of the excitation wavelength on the value of the equilibrium constant as determined by Time-Resolved Emission Spectroscopy (TRES)
- Speciation of technetium and rhenium complexes by in situ XAS-electrochemistry
- Condensation mechanisms of tetravalent technetium in chloride media
- Erratum to the article “Sunflower stem: a novel and economical scavenger for Hg(II) ions from aqueous solutions and its kinetic and thermodynamic investigation” by Ummat Rasul Malik, Syed Moosa Hasany, Muhammad Sadiq Subhani
