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PhysRevLett.130.158202.pdf (1.61 MB)

Interactions between rigid polyelectrolytes mediated by ordering and orientation of multivalent nonspherical ions in salt solutions

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journal contribution
posted 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.

Funding

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

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Physical Review Letters

Volume

130

Issue

15

Publisher

American Physical Society

Version

  • VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

Published 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.

Acceptance date

2023-03-22

Publication date

2023-04-14

Copyright date

2023

ISSN

0031-9007

eISSN

1079-7114

Language

  • en

Depositor

Prof Tapio Ala-Nissila. Deposit date: 13 October 2023

Article number

158202

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