Toxicity and biodegradability of dicationic ionic liquids

Stephanie Steudte , Steve Bemowsky , Maria Mahrova , Ulrike Bottin-Weber , Emilia Tojo-Suarez , Piotr Stepnowski , Stefan Stolte

Abstract

Ionic liquids (ILs) formed by multivalent cations are generally of higher thermal and electrochemical stability, which makes them attractive for use in high-temperature applications. Whereas the influence of structural elements on the physicochemical properties of dicationic ILs (DILs) is well established, such systematic investigations on their ecotoxicity and biodegradablility are still lacking. The present study investigates the influence of the dicationic structural elements on these characteristics and addresses the question whether already established structure–activity relationships of common ILs can be applied to DILs. Therefore, a set of 10 DILs with different linkage chain length, terminal alkyl side chain length, linkage chain polarity and head groups were synthesized and studied in several biodegradation and toxicity tests. The results showed that the acute toxicity was in many cases below the levels observed for monocationic ILs. However, none of the DILs could be degraded within the performed biodegradation experiments. Hence, DILs are a potential less toxic alternative to monocationic ILs, but further work on their design is necessary.
Author Stephanie Steudte PChZŚ
Stephanie Steudte,,
- Laboratory of Chemical Environmental Risks
, Steve Bemowsky
Steve Bemowsky,,
-
, Maria Mahrova
Maria Mahrova,,
-
, Ulrike Bottin-Weber
Ulrike Bottin-Weber,,
-
, Emilia Tojo-Suarez
Emilia Tojo-Suarez,,
-
, Piotr Stepnowski PChZŚ
Piotr Stepnowski,,
- Laboratory of Chemical Environmental Risks
, Stefan Stolte PChZŚ
Stefan Stolte,,
- Laboratory of Chemical Environmental Risks
Journal seriesRSC Advances, ISSN 2046-2069
Issue year2014
Vol4
No10
Pages5198-5205
Publication size in sheets0.5
DOIDOI:10.1039/c3ra45675g
URL http://pubs.rsc.org/en/content/articlepdf/2014/ra/c3ra45675g
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne (CC-BY-NC); with publication
Score (nominal)35
ScoreMinisterial score = 35.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2014 = 3.84 (2) - 2014=3.907 (5)
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