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Reactivity Towards Europium(III) of the Radiolysis Products of the Ionic Liquid 1‐Methyl‐3‐butyl‐1 H ‐imidazolium Bis[(trifluoromethyl)sulfonyl]amide (C 4 ‐mimTf 2 N) and Effect of Water: A TRLFS (Time‐Resolved Laser‐Induced Fluorescence Spectroscopy) Preliminary Study
Author(s) -
Billard Isabelle,
Georg Sylvia
Publication year - 2009
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200900140
Subject(s) - chemistry , radiolysis , europium , sulfonyl , trifluoromethyl , amide , ionic liquid , reactivity (psychology) , medicinal chemistry , fluorescence , luminescence , irradiation , photochemistry , inorganic chemistry , nuclear chemistry , organic chemistry , ion , catalysis , aqueous solution , alkyl , medicine , alternative medicine , physics , optoelectronics , pathology , quantum mechanics , nuclear physics
The effect of laser irradiation at λ exc 266 nm onto the fluorescence characteristics of Eu III in solution of the ionic liquid 1‐methyl‐3‐butyl‐1 H ‐imidazolium bis[(trifluoromethyl)sulfonyl]amide (C 4 ‐mimTf 2 N) was examined for various amounts of H 2 O added. Stable radiolytic products that were generated at very low doses (in the range of 4 kGy) were very reactive with Eu III and led to the appearance of a new europium luminescent species that was characterized by lifetime, relative intensity, and emission spectrum. Although the lifetime and the intensity depended on the H 2 O content, the emission spectrum was not influenced by H 2 O. It was shown that large amounts of H 2 O, although not preventing radiolysis of C 4 ‐mimTf 2 N, inhibited the complexation with Eu III .