Title: Purification of imidazolium ionic liquids for spectroscopic applications
Authors: Nockemann, Peter
Binnemans, Koen
Driesen, Kris # ×
Issue Date: 2005
Publisher: Elsevier science bv
Series Title: Chemical Physics Letters vol:415 issue:1-3 pages:131-136
Abstract: Ionic liquids are often contaminated by colored impurities. These impurities can be problematic for spectroscopic studies or for monitoring organic reactions by UV/Vis spectroscopy. The effect of different purification methods on the optical quality of colored ionic liquids was studied and compared. Yellowish ionic liquids can partially be decolorized by treatment with active charcoal or by recrystallization. Our experiments show column liquid chromatography is not always a good technique to prepare spectrograde imidazolium halide ionic liquids. Colorless and UV-transparent ionic liquids were synthesized by a method that can exclude the need for further purification steps.
ISSN: 0009-2614
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Design and Synthesis
× corresponding author
# (joint) last author

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