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Updated: Mar 26, 2026

High Pressure Single Crystal Diffraction at PX^2
Published on: January 16, 2017
An ARXPS and ERXPS study of quaternary ammonium and phosphonium ionic liquids: utilising a high energy Ag Lα' X-ray
Rebecca K Blundell1, Astrid E Delorme1, Emily F Smith1
1The GlaxoSmithKline Carbon Neutral Laboratory, School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, UK. peter.licence@nottingham.ac.uk.
Abstract:
A series of ammonium- and phosphonium-based ionic liquids have been probed using X-ray photoelectron spectroscopy (XPS) with a high energy Ag Lα' X-ray source. The capability of the Ag Lα' X-ray source for ionic liquid analysis is confirmed alongside the characterisation of previously undetected high energy core photoelectron emissions. Additionally, the utilisation of the Ag Lα' X-ray source as a depth profiling technique (ERXPS) to investigate the structure of the ionic liquid/vacuum interface has been demonstrated, with comparison made to angle resolved X-ray photoelectron spectroscopy (ARXPS).
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