In vitro cytotoxicities of ionic liquids: Effect of cation rings, functional groups, and anions

R. Anand Kumar, Nicolas Papaïconomou, Jong Min Lee, Justin Salminen, Douglas S. Clark, John M. Prausnitz

Research output: Contribution to journalArticlepeer-review

151 Citations (Scopus)

Abstract

In vitro cytotoxicities were measured for ionic liquids (ILs) containing various cations and anions using the MCF7 human breast cancer cell line. We measured the cytotoxicities of ionic liquids containing the cations pyridinium, pyrrolidinium, piperidinium, or imidazolium with various alkyl chain lengths, and the anions bromide, bis(trifluoromethanesulfone)imide (Tf2N), trifluoromethylsulfonate (TfO), or non-afluoromethylsulfonate (NfO). Three new hydrophobic, task-specific ionic liquids (TSILs), namely, [MBCNPip] +[Tf2N]-, [MPS2Pip] +[Tf2N]-, and [MPS2Pyrro] +[Tf2N]- designed for metal-ion extraction were also evaluated. IC50 values of the ionic liquids toward the MCF7 cells ranged from 8 μM to 44 mM. The toxicity depended significantly on the nature of the cations and anions, especially when the cations contained a long side chain. TSILs studied in this work were less toxic than the classical ILs.

Original languageEnglish
Pages (from-to)388-395
Number of pages8
JournalEnvironmental Toxicology
Volume24
Issue number4
DOIs
Publication statusPublished - Aug 2009
Externally publishedYes

ASJC Scopus Subject Areas

  • Toxicology
  • Management, Monitoring, Policy and Law
  • Health, Toxicology and Mutagenesis

Keywords

  • Cytotoxicity
  • Ionic liquids
  • Task-specific ionic liquids

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