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@ARTICLE{vonZamory:840052,
      author       = {von Zamory, Jan and Giffin, Guinevere A. and Jeremias,
                      Sebastian and Castiglione, Franca and Mele, Andrea and
                      Paillard, Elie-Elisée and Passerini, Stefano},
      title        = {{I}nfluence of oligo(ethylene oxide) substituents on
                      pyrrolidinium-based ionic liquid properties, {L}i+ solvation
                      and transport},
      journal      = {Physical chemistry, chemical physics},
      volume       = {18},
      number       = {31},
      issn         = {1463-9084},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2017-07616},
      pages        = {21539 - 21547},
      year         = {2016},
      abstract     = {The presence of oligoether functional groups in the cations
                      of ionic liquids has a significant effect on Li+
                      coordination. In this work, a series of
                      N-alkoxylether-N-methyl pyrrolidinium
                      bis(trifluoromethanesulfonyl)imide ionic liquids were
                      synthesized to investigate the effect of the number of ether
                      units on Li+ coordination and transport. The nature of Li+
                      coordination was elucidated through the combination of Raman
                      spectroscopy and heteronuclear Overhauser effect NMR
                      spectroscopy. The presence of a simple ether in the cation
                      side chain results in improved physical properties as
                      compared to N-alkyl-N-methyl pyrrolidinium-based ionic
                      liquids, but does not significantly affect Li+ coordination
                      possibly due to steric effects of the pyrrolidinium ring.
                      Increasing the number of ethylene oxide units in the side
                      chain results in the progressive displacement of IL anions
                      in the first Li+ solvation shell by IL cations due to the
                      preferential coordination of Li+ by the ether oxygen atoms.
                      The apparent transference number of the IL cation decreases
                      and that of the IL anion increases with increasing side
                      chain length. Unfortunately, this does not result in an
                      increase in the Li transference. Nonetheless, the results of
                      this study have important implications for electrolyte
                      systems where the desolvation of the metal cation from the
                      IL anions is the limiting factor in the charge transport
                      mechanism.},
      cin          = {IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:27426047},
      UT           = {WOS:000381418000063},
      doi          = {10.1039/C6CP02092E},
      url          = {https://juser.fz-juelich.de/record/840052},
}