Using XPS to determine solute solubility in room temperature ionic liquids

D.S. Silvester, T.L. Broder, Leigh Aldous, Christopher Hardacre, A. Crossley, R.G. Compton

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

X-Ray Photoelectron Spectroscopy (XPS) was used to quantify the amount of bromide ions present in two samples of [C(4)mpyrr]Br dissolved in the room temperature ionic liquid (RTIL) [C(4)mpyrr][N(Tf)(2)]. One sample was of a known concentration (0.436 Br atom%); the other was a saturated solution. The results obtained from quantitative XPS analysis indicated that the saturated sample had a concentration, or solubility, of 0.90 Br atom% (746 mM) at 298 K, which was then independently confirmed by potential-step chronoamperometry of the same solution.
Original languageEnglish
Pages (from-to)196-198
Number of pages3
JournalAnalyst
Volume132
Issue number3
DOIs
Publication statusPublished - Feb 2007

ASJC Scopus subject areas

  • Analytical Chemistry

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