Stability analysis of the superoxide ion generated in trihexyl (tetradecyl) phosphonium bis (trifluoromethylsulfonyl) imide ionic liquid

Maan Hayyan*, Farouq S. Mjalli, Mohd Ali Hashim, Inas M. Al-Nashef, Xue Mei Tan, Kim L. Chooi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Superoxide ion has been generated in ionic liquid trihexyl (tetradecyl) phosphonium bis (trifluoromethylsulfonyl) imide, [PI4, 666][N(Tf)2]. Cyclic voltammetry and chronoamperometry techniques were used for the electrochemical generation of 02'~, while chemical generation was done by adding K02 to DMSO. The long term stability of 02'~ was investigated using UV/Vis spectrophotometer. It was found that the quaternary phosphonium cation, [PI 4, 666]+ is a reasonably safe cation for the generation of 02'~ which indicates the possible use of ILs involving it for further useful applications.

Original languageEnglish
Pages (from-to)1166-1170
Number of pages5
JournalJournal of Applied Sciences
Issue number12
Publication statusPublished - 2010
Externally publishedYes


  • Ionic liquids
  • Phosphonium
  • Stability
  • Superoxide ion

ASJC Scopus subject areas

  • General

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