A Europium(III) Complex with an Unusual Anion-Cation Interaction: A Luminescent Molecular Thermometer for Ratiometric Temperature Sensing.
作者： Mani Outis , César A. T. Laia , M. Conceição Oliveira , Bernardo Monteiro , Cláudia C. L. Pereira
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摘要: An unusual thermally sensitive anion-cation interaction, which is characteristic of the anion [Eu(FOD)4 ]- , occurs in complex [CHOL][Eu(FOD)4 ] (1; CHOL=choline; FOD=1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionate) and affects both quantum yield thermochromic behavior. This prompted design an Eu3+ -based ratiometric thermometer that functions at temperatures up to 95 °C through a excited state absorption ion. The reusable temperature-sensitive luminescent showed range relative sensitivity between 0.45 % C-1 25 °C, with increase 7.0 % C-1 95 °C. Confinement compound 1 transparent film polysulfone resulted higher thermal stability while its luminescence strong temperature dependence.
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