期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 17, 期 17, 页码 11839-11847出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp01069a
关键词
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资金
- University of Nottingham
- EPSRC [EP/K005138/1]
- Engineering and Physical Sciences Research Council [EP/D073014/1, EP/K005138/1, 1221684] Funding Source: researchfish
- EPSRC [EP/D073014/1] Funding Source: UKRI
Herein, we investigate the first X-ray photoelectron spectroscopy (XPS) data for a range of functionalised guanidinium based systems that are commonly employed in the dissolution of biomolecules. We define a peak fitting model which allows the direct comparison to more common cation sets including dialkylimidazolium, pyrrolidinium, and quaternary ammonium based systems. The measured binding energies (BEs) of the N 1s and C 1s components are presented and notable variations discussed. These data show a large difference between measured binding energies for the N-cation 1s when compared to other families of ionic liquids. These results suggest a weaker anion/cation interaction thus the anion is more able to interact with a solid matrix, i.e. keratin, silk, chitin, collagen, cellulose, and become more active in dissolution.
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