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X-Ray Photoelectron Spectroscopy of Imidazolium Zwitterionic Salts: Comparison to Acetate Analogs and the Impact of the Alkyl Chain Length on the Charge Distribution

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Journal of Applied Spectroscopy Aims and scope

We investigate two imidazolium zwitterionic salts, 1,3-dimethylimidazolium-2-carboxylate and 1-butyl-3-methylimidazolium-2-carboxylate, together with 1-butyl-3-methylimidazolium acetate using X-ray photoelectron spectroscopy. The electronic environment of each element for the two zwitterionic salts is analyzed. Due to the electron-withdrawing effect of the imidazoliumcation, the binding energies of Ccarboxyl 1s and O 1s for zwitterionic salts are higher than those of 1-butyl-3-methylimidazolium acetate. The impact of the alkyl chain length on the charge distribution is also illustrated. It suggests that the electron-withdrawing effect of the imidazoliumcation decreases along with the increasing of the alkyl chain length.

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Correspondence to Sh. Men.

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Abstract of article is published in Zhurnal Prikladnoi Spektroskopii, Vol. 84, No. 5, p. 836, September–October, 2017.

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Men, S., Jiang, J. & Liu, Y. X-Ray Photoelectron Spectroscopy of Imidazolium Zwitterionic Salts: Comparison to Acetate Analogs and the Impact of the Alkyl Chain Length on the Charge Distribution. J Appl Spectrosc 84, 906–910 (2017). https://doi.org/10.1007/s10812-017-0563-7

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  • DOI: https://doi.org/10.1007/s10812-017-0563-7

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