publication . Article . 2013

Alkylimidazolium Based Ionic Liquids: Impact of Cation Symmetry on Their Nanoscale Structural Organization

Marisa A. A. Rocha; Catarina M. S. S. Neves; Mara G. Freire; Olga Russina; Alessandro Triolo; João A. P. Coutinho; Luís M. N. B. F. Santos;
Closed Access English
  • Published: 04 Sep 2013
Abstract
Aiming at evaluating the impact of the cation symmetry on the nanostructuration of ionic liquids (ILs), in this work, densities and viscosities as a function of temperature and small wide angle X-ray scattering (SWAXS) patterns at ambient conditions were determined and analyzed for 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (asymmetric) and 1,3-dialkylimidazolium bis(trifluoromethylsulfonyl) imide (symmetric) series of ionic liquids. The symmetric IL series, [ChinCNnim][NTf2], presents lower viscosities than the asymmetric [C-N/2 C-N/2 im][NTf2] counterparts. For ionic liquids from [C(1)C(1)im][NTf2] to [C(6)C(6)im][NTf2], an odd even effect ...
Subjects
free text keywords: ALKYL CHAIN-LENGTH, PHYSICOCHEMICAL PROPERTIES, TEMPERATURE, IMIDAZOLIUM, DENSITY, SEGREGATION, VISCOSITY, MODEL, Journal Article, Physical and Theoretical Chemistry, Materials Chemistry, Surfaces, Coatings and Films, Organic chemistry, Nanoscopic scale, Structural organization, Physical chemistry, Scattering, Ionic liquid, chemistry.chemical_compound, chemistry, Imide, Alkyl side chain, Inorganic chemistry
Funded by
FCT| PTDC/AAC-AMB/119172/2010
Project
PTDC/AAC-AMB/119172/2010
[ILTOX] Ecotoxicological evaluation and treatment of aqueous effluents contaminated with ionic liquids
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: 119172
  • Funding stream: COMPETE
,
FCT| PEst-C/CTM/LA0011/2013
Project
PEst-C/CTM/LA0011/2013
Strategic Project - LA 11 - 2013-2014
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: 132936
  • Funding stream: COMPETE
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publication . Article . 2013

Alkylimidazolium Based Ionic Liquids: Impact of Cation Symmetry on Their Nanoscale Structural Organization

Marisa A. A. Rocha; Catarina M. S. S. Neves; Mara G. Freire; Olga Russina; Alessandro Triolo; João A. P. Coutinho; Luís M. N. B. F. Santos;