TRLFS study on the complexation of Cm(III) and Eu(III) with SO3-Ph-BTBP
The complexation of Cm(III) and Eu(III) with a water soluble BTBP (sodium 3,3′,3′′,3′′′-([2,2′-bipyridine]-6,6′-diylbis(1,2,4-triazine-3,5,6-triyl))tetrabenzenesulfonate, SO3-Ph-BTBP) is studied using time resolved laser fluorescence spectroscopy. For the complexation of Cm(III) the influence of the...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
7 September 2015
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| In: |
Dalton transactions
Year: 2015, Volume: 44, Issue: 39, Pages: 17143-17151 |
| ISSN: | 1477-9234 |
| DOI: | 10.1039/C5DT02923F |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/C5DT02923F Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2015/dt/c5dt02923f 
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| Author Notes: | Christoph Wagner, Udo Müllich, Andreas Geist and Petra J. Panak |
| Summary: | The complexation of Cm(III) and Eu(III) with a water soluble BTBP (sodium 3,3′,3′′,3′′′-([2,2′-bipyridine]-6,6′-diylbis(1,2,4-triazine-3,5,6-triyl))tetrabenzenesulfonate, SO3-Ph-BTBP) is studied using time resolved laser fluorescence spectroscopy. For the complexation of Cm(III) the influence of the medium (10−3 M HClO4 → 0.5 M HNO3) is investigated in detail revealing important impacts of the applied medium (pH, ionic strength, anions) on the speciation and conditional stability constants. SO3-Ph-BTBP forms 1 : 2 complexes with Cm(III) and Eu(III). The conditional stability constants of [Cm(SO3-Ph-BTBP)2]5− and [Eu(SO3-Ph-BTBP)2]5− in 0.5 M HNO3 are determined to be log β02 = 7.3 ± 0.3 and log β02 = 5.4 ± 0.5, respectively. The difference of 1.9 orders of magnitude is in line with hydrophobic BT(B)P type ligands and shows that the selectivity is not affected by tuning the hydrophilicity using SO3-Ph-side chains. |
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| Item Description: | Gesehen am 26.06.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1477-9234 |
| DOI: | 10.1039/C5DT02923F |