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|Type:||Artigo de periódico|
|Title:||Intrinsic Mobility Of Gaseous Cationic And Anionic Aggregates Of Ionic Liquids|
De Sa G.F.
De Souza V.
|Abstract:||Travelling-wave ion mobility mass spectrometry was used to measure the intrinsic mobility of a series of gaseous supra-cation and supra-anion aggregates of several ionic liquids. Close mobilities were observed in a T-wave cell filled with helium at ca. 0.8 mbar for [(DAI)n+1(X) n]+ (DAI is the 1,3-dialkylimidazolium cation and X is the anion) as compared to the respective anions [(DAI)n(X) n+1]- for n=0 to 9. The anomalous behavior reported before in the condensed phase seems therefore to be related to the unique structural organization of pure ionic liquids that provides both polar and non-polar regions with directionality in which the anionic species are more retained than the cationic species in the salt network. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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