PhysRevLett.130.158202.pdf (1.61 MB)
Interactions between rigid polyelectrolytes mediated by ordering and orientation of multivalent nonspherical ions in salt solutions
journal contributionposted on 2023-10-16, 16:18 authored by Hossein Vahid, Alberto Scacchi, Maria Sammalkorpi, Tapio Ala-NissilaTapio Ala-Nissila
Multivalent ions in solutions with polyelectrolytes (PEs) induce electrostatic correlations that can drastically change ion distributions around the PEs and their mutual interactions. Using coarse-grained molecular dynamics simulations, we show how in addition to valency, ion shape and concentration can be harnessed as tools to control rigid like-charged PE-PE interactions. We demonstrate a correlation between the orientational ordering of aspherical ions and how they mediate the effective PE-PE attraction induced by multivalency. The interaction type, strength, and range can thus be externally controlled in ionic solutions. Our results can be used as generic guidelines to tune the self-assembly of like-charged polyelectrolytes by variation of the characteristics of the ions.
Academy of Finland through its Centres of Excellence Programme (2022-2029, LIBER) under Project No. 346111 (M. S.) and Academy of Finland Project No. 307806 (PolyDyna)
Technology Industries of Finland Centennial Foundation TT2020 grant
- Mathematical Sciences
Published inPhysical Review Letters
PublisherAmerican Physical Society
- VoR (Version of Record)
Rights holder© The Authors
Publisher statementPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/) license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.