Purification of imidazolium ionic liquids for spectroscopic applications

Peter Nockemann; K. Binnemans; K. Driesen

doi:10.1016/j.cplett.2005.08.128

Purification of imidazolium ionic liquids for spectroscopic applications

Peter Nockemann
, K. Binnemans
, K. Driesen

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

249 Citations (Scopus)

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. (c) 2005 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	131-136
Number of pages	6
Journal	Chemical Physics Letters
Volume	415
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2005.08.128
Publication status	Published - 24 Oct 2005

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Spectroscopy
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Surfaces and Interfaces

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10.1016/j.cplett.2005.08.128

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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. (c) 2005 Elsevier B.V. All rights reserved.",

author = "Peter Nockemann and K. Binnemans and K. Driesen",

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AU - Nockemann, Peter

AU - Binnemans, K.

AU - Driesen, K.

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Y1 - 2005/10/24

N2 - 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. (c) 2005 Elsevier B.V. All rights reserved.

AB - 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. (c) 2005 Elsevier B.V. All rights reserved.

UR - https://www.scopus.com/pages/publications/26444454446

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DO - 10.1016/j.cplett.2005.08.128

M3 - Article

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SP - 131

EP - 136

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Purification of imidazolium ionic liquids for spectroscopic applications

Abstract

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