Relationship between the Relaxation of Ionic Liquid Structural Motifs and That of the Shear Viscosity.

ABSTRACT: In a set of recent articles, we have highlighted that friction is highly inhomogeneous in a typical ionic liquid (IL) with charge networks that are stiff and charge-depleted regions that are soft. This has consequences not only for the dynamics of ILs but also for the transport properties of solutes dissolved in them. In this article, we explore whether the family of alkylimidazolium ILs coupled with bis(trifluoromethylsulfonyl)imide (with similar Coulombic interactions but different alkyl tails), when dynamically "equalized" by having a similar shear viscosity, display q-dependent structural relaxation time scales that are the same across the family. Our results show that this is not the case, and in fact, the relaxation of in-network charge alternation appears to be significantly

SUBMITTER: Amith WD 

PROVIDER: S-EPMC8279556 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature