Silvester, Debbie S.Debbie S.SilvesterBroder, Tessa L.Tessa L.BroderLEIGH ALDOUSHardacre, ChristopherChristopherHardacreCrossley, AlisonAlisonCrossleyCompton, Richard G.Richard G.Compton2024-09-182024-09-182007https://www.scopus.com/record/display.uri?eid=2-s2.0-33847250452&origin=resultslisthttps://scholars.lib.ntu.edu.tw/handle/123456789/721108X-Ray Photoelectron Spectroscopy (XPS) was used to quantify the amount of bromide ions present in two samples of [C4mpyrr]Br dissolved in the room temperature ionic liquid (RTIL) [C4mpyrr][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. © The Royal Society of Chemistry.[SDGs]SDG6journal article10.1039/b700212b2-s2.0-33847250452