Dynamic Microscopic Extraction of Europium(III) with 2-Thenoyltrifluoroacetone Observed as Random Fluorescence Flashes at Dodecane–Water Interface

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  • Ayaka Takata
    Department of Chemistry, Graduate School of Science, Osaka University
  • Satoshi Tsukahara
    Department of Chemistry, Graduate School of Science, Hiroshima University
  • Hitoshi Watarai
    Department of Chemistry, Graduate School of Science, Osaka University

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<jats:title>Abstract</jats:title> <jats:p>Many random circular flashes of Eu(III) fluorescence (8–23 μm in diameter) appeared at the interface in the extraction of Eu(III) with 2-thenoyltrifluoroacetone (Htta) into dodecane, when a Eu3+ aqueous solution was added after pre-distribution of Htta in the aqueous phase. The flash was caused by the interfacial reaction between a pre-generated micro-aggregate of Eu(tta)2+ in the aqueous phase and excess Htta in the dodecane phase. The interfacial reaction produced more fluorescent Eu(tta)3, which diffused away into the dodecane phase.</jats:p>

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  • Chemistry Letters

    Chemistry Letters 33 (5), 518-519, 2004-03-30

    Oxford University Press (OUP)

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