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@ARTICLE{Mozhdehei:641737,
author = {Mozhdehei, Armin and Lenz, Philip and Gries, Stella and
Meinert, Sophia-Marie and Lefort, Ronan and Zanotti,
Jean-Marc and Berrod, Quentin and Appel, Markus and Busch,
Mark and Huber, Patrick and Fröba, Michael and Morineau,
Denis},
title = {{C}olossal {E}ffect of {N}anopore {S}urface {I}onic
{C}harge on the {D}ynamics of {C}onfined {W}ater},
journal = {The journal of physical chemistry / C},
volume = {129},
number = {40},
issn = {1932-7447},
address = {Washington, DC},
publisher = {Soc.},
reportid = {PUBDB-2025-05148},
pages = {18311 - 18324},
year = {2025},
note = {Waiting for fulltext},
abstract = {Interfacial interactions significantly alter the
fundamental properties of water confined in mesoporous
structures with crucial implications for geological,
physicochemical, and biological processes. Herein, we
focused on the effect of changing the surface ionic charge
of nanopores with comparable pore sizes (3.5–3.8 nm) on
the dynamics of confined liquid water. The control of the
pore surface ionicity was achieved by using two periodic
mesoporous organosilicas (PMOs) containing either neutral or
charged forms of a chemically similar bridging unit. The
effect on the dynamics of water at the nanoscale was
investigated in the temperature range 245–300 K,
encompassing the glass transition by incoherent
quasi-elastic neutron scattering (QENS). For both types of
PMOs, the water dynamics revealed two distinct types of
molecular motions: rapid local movements and translational
jump diffusion. While the neutral PMO induces a moderate
confinement effect, we show that the charged PMO drastically
slows down water dynamics, reducing translational diffusion
by a factor of 4 and increasing the residence time by an
order of magnitude. Notably, by changing the pore filling
values, we demonstrate that for charged PMOs, this effect
extends beyond the interfacial layer of surface-bound water
molecules to encompass the entire pore volume. Thus, our
observation indicates a dramatic change in the long-range
character of the interaction of water confined in nanopores
with surface ionic charge compared to a simple change in
hydrophilicity. This is relevant for the understanding of a
broad variety of applications in (nano)technological
phenomena and processes such as nanofiltration and membrane
design.},
cin = {CIMMS},
ddc = {530},
cid = {I:(DE-H253)CIMMS-20211022},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / AIM, DFG project G:(GEPRIS)390715994
- EXC 2056: CUI: Advanced Imaging of Matter (390715994)},
pid = {G:(DE-HGF)POF4-632 / G:(GEPRIS)390715994},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
doi = {10.1021/acs.jpcc.5c04787},
url = {https://bib-pubdb1.desy.de/record/641737},
}