Probing the electronic structure of ether functionalised ionic liquids using X-ray photoelectron spectroscopy. Issue 3 (2nd January 2020)

• Record Type: Journal Article
• Authors: Dick, Ejike J.; Fouda, Adam E. A.; Besley, Nicholas A.; Licence, Peter
• Is Part Of: Physical chemistry chemical physics. Volume 22:Issue 3(2019)
• Page Start: 1624
• Page End: 1631
• Publication Date: 2020-01-02
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c9cp01297d
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : The charge distribution associated with individual components in functionalised ionic liquids (ILs) can be tuned by careful manipulation of the substituent groups incorporated into the ions. Abstract : The charge distribution associated with individual components in functionalised ionic liquids (ILs) can be tuned by careful manipulation of the substituent groups incorporated into the ions. Here we use X-ray photoelectron spectroscopy to investigate the impact of substituent atoms on the electronic structure of similar imidazolium-based systems each paired with a common anion, [Tf2 N] − . The experimental measurements revealed an unexpected variation in the charge density distribution within the IL cation when the oxygen atom in a poly-ether containing side chain is moved by just one atomic position. This surprising observation is supported by density functional theory calculations.