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

H Vahid, A Scacchi, M Sammalkorpi, T Ala-Nissila - Physical Review Letters, 2023 - APS
Multivalent ions in solutions with polyelectrolytes (PEs) induce electrostatic correlations that
can drastically change ion distributions around the PEs and their mutual interactions. Using …

Ion condensation onto ribozyme is site specific and fold dependent

N Hori, NA Denesyuk, D Thirumalai - Biophysical Journal, 2019 - cell.com
The highly charged RNA molecules, with each phosphate carrying a single negative charge,
cannot fold into well-defined architectures with tertiary interactions in the absence of ions …

Local structure of DNA toroids reveals curvature-dependent intermolecular forces

L Barberi, F Livolant, A Leforestier… - Nucleic Acids …, 2021 - academic.oup.com
In viruses and cells, DNA is closely packed and tightly curved thanks to polyvalent cations
inducing an effective attraction between its negatively charged filaments. Our understanding …

Surface electrostatic force in presence of dimer counter-ion

S Zhou - Journal of Molecular Liquids, 2021 - Elsevier
Combining classical density functional theory with modified interfacial statistical associating
fluid theory, we investigate the surface electrostatic force (SEF) between two negatively and …

Charged nanorods at heterogeneously charged surfaces

A Naji, K Hejazi, E Mahgerefteh… - The Journal of Chemical …, 2018 - pubs.aip.org
We study the spatial and orientational distribution of charged nanorods (rodlike counterions)
as well as the effective interaction mediated by them between two plane-parallel surfaces …

Orientational transition and complexation of DNA with anionic membranes: weak and intermediate electrostatic coupling

S Buyukdagli, R Podgornik - Physical Review E, 2019 - APS
We characterize the role of charge correlations in the adsorption of a short, rodlike anionic
polyelectrolyte onto a similarly charged membrane. Our theory reveals two different …

Counterion condensation theory for finite polyelectrolyte and salt concentrations

JA Bertolotto, JP Umazano - Journal of Physics: Condensed …, 2022 - iopscience.iop.org
In the present work we analyze the physical fundamentals of Manning's counterion
condensation using his charged line model in a simple salt solution. We extend the theory …

Condensation of Rodlike Counterions on a Charged Cylinder

M Cha, S Ro, YW Kim - Journal of the Korean Physical Society, 2020 - Springer
We study the condensations of dumbbell-like counterions onto an oppositely charged
cylinder at weak and strong electrostatic coupling strengths. Performing extensive Monte …

Control of solvent exposure of cationic polypeptides in anionic environment

P Patra, R Banerjee, J Chakrabarti - Chemical Physics Letters, 2020 - Elsevier
Here we study anionic biphosphate condensation around cationic HIV-1 Tat peptide to
understand interaction between charged functional groups with counter-anion. Our all-atom …

Rodlike counterions at heterogeneously charged surfaces

A Naji, K Hejazi, E Mahgerefteh… - arxiv preprint arxiv …, 2018 - arxiv.org
We study the spatial and orientational distribution of rodlike counterions (such as mobile
nanorods) as well as the effective interaction mediated by them between two plane-parallel …