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An X-ray photoelectron spectroscopy study of ionic liquids based on a bridged dicationic moiety

Zafar, Anham; Evans, Tim; Palgrave, Robert G; Imtiaz-ud-Din; (2022) An X-ray photoelectron spectroscopy study of ionic liquids based on a bridged dicationic moiety. Journal of Chemical Research , 46 (2) 10.1177/17475198221092966. Green open access

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Abstract

A series of imidazolium and pyridinium-based bridged dicationic ionic liquids have been analysed using X-ray photoelectron spectroscopy. The different electronic environments of the dications have been investigated and a robust fitting model for the carbon C1s region has also been developed. The relative positions of different C1s components and N1s of dications have been determined and their complex C1s photoemission spectra produced from both aromatic and aliphatic carbon states giving photoemission peaks in the binding energy range of 289.0–283.9 eV. A contemporary fitting approach has been applied to a different set of environments which allowing comparison of the binding energies of cationic components of imidazolium and pyridinium-based dicationic ionic liquids. The experimental stoichiometry of all the carbons and nitrogens have also been calculated from XP spectra of the dicationic ionic liquids.

Type: Article
Title: An X-ray photoelectron spectroscopy study of ionic liquids based on a bridged dicationic moiety
Open access status: An open access version is available from UCL Discovery
DOI: 10.1177/17475198221092966
Publisher version: https://doi.org/10.1177/17475198221092966
Language: English
Additional information: https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
Keywords: Science & Technology, Physical Sciences, Chemistry, Multidisciplinary, Chemistry, dicationic ionic liquids, carbon C1s photoemissions, X-ray photoelectron spectroscopy, ELECTRON-SPECTROSCOPY, SURFACE-COMPOSITION, CHEMICAL-ANALYSIS, XPS, IMIDAZOLIUM, METAL
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10148186
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