Formation of fluorescent complexes of Eu(III) and Sm(III) with β-diketones and trioctylphosphine oxide in oil-water microemulsions

✍ Scribed by Hitoshi Watarai; Koko Ogawa; Nobuo Suzuki

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 474 KB
• Volume: 277
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(93)85091-w

✦ Synopsis

Synergistic enhancement of the fluorescence of Eu(III1 and Sm(III1 by the addition of @diketones (I-IL) and trioctylphosphine oxide (TOPO) was observed in single-phase oil-water microemulsions composed of water-sodium dodecyl sulphate-butan-1-ol-heptane.

The synergistic phenomena were attributable to the formation of the ternary complexes MLs(TOPO),, where M = Eu(II1) or Sm(III1, in the microemulsion droplets and the formation constants were determined. Microslide electrophoresis of the microemulsion systems confirmed the solubilixation of the complexes into the droplets.