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@ARTICLE{NarayananKrishnamoorthy:862546,
author = {Narayanan Krishnamoorthy, Anand and Holm, Christian and
Smiatek, Jens},
title = {{S}pecific ion effects for polyelectrolytes in aqueous and
non-aqueous media: the importance of the ion solvation
behavior},
journal = {Soft matter},
volume = {14},
number = {30},
issn = {1744-6848},
address = {London},
publisher = {Royal Soc. of Chemistry},
reportid = {FZJ-2019-02840},
pages = {6243 - 6255},
year = {2018},
abstract = {We present the results of atomistic molecular dynamics
simulations with regard to specific ion effects in water,
methanol and N,N-dimethylacetamide (DMAc). As a reference
system, we introduce rigid and rod-like models of polyanions
and polycations in combination with alkali metal cations and
halide anions as counterions. Pronounced specific ion
effects can be observed in terms of the individual anion and
cation condensation behavior. The outcomes of our
simulations thus reveal significant deviations from standard
electrostatic mean-field theories. A detailed investigation
of the individual energy contributions shows that
ion–dipole interactions play a pivotal role in
rationalizing the findings. The corresponding deviations in
terms of the cation and anion distribution can be brought
into agreement with the donor and acceptor numbers of the
solvents, which thus highlights the importance of
solvent–ion interactions in addition to electrostatic
attraction.},
cin = {IEK-12},
ddc = {530},
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:30009285},
UT = {WOS:000449199000009},
doi = {10.1039/C8SM00600H},
url = {https://juser.fz-juelich.de/record/862546},
}