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@ARTICLE{Hartnig:32504,
author = {Hartnig, C. and Koper, M. T. M.},
title = {{S}olvent reorganization in electron and ion transfer
reactions near a smooth electrified surface: a molecular
dynamics study},
journal = {Journal of the American Chemical Society},
volume = {125},
issn = {0002-7863},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {PreJuSER-32504},
pages = {9840 - 9845},
year = {2003},
note = {Record converted from VDB: 12.11.2012},
abstract = {Molecular dynamics simulations of electron and ion transfer
reactions near a smooth surface are presented, analyzing the
effect of the geometrical constraint of the surface and the
interfacial electric field on the relevant solvation
properties of both a monovalent negative ion and a neutral
atom. The simulations show that, from the solvation point of
view, ion adsorption is an uphill process due to the need to
shed off the ion's solvation shell and displace water from
the surface. Atom adsorption, on the other hand, has only a
small barrier, related to the molecularity of the solvent.
Both the electrostatic interaction of the ion with the
solvent and the ion's solvent reorganization energy (the
relevant parameter in the Marcus electron transfer theory)
decrease as the surface is approached, whereas these
parameters are not sensitive to the distance from the
surface for the atom. This is a consequence of the
importance of long-range electrostatic interactions for ion
solvation and the importance of short-range interactions for
atom solvation. The electric field either attracts or repels
an ion to or from the surface, but the field has no
influence on the solvent reorganization energy. By including
the quantum-mechanical electron transfer between the metal
surface and the ion/atom in solution in the MD simulation by
using a model Hamiltonian, we calculated two-dimensional
free energy surfaces for ion adsorption allowing for partial
charge transfer, based on a fully molecular picture of ion
solvation near the surface.},
keywords = {J (WoSType)},
cin = {IWV-3},
ddc = {540},
cid = {I:(DE-Juel1)VDB3},
pnm = {Brennstoffzelle},
pid = {G:(DE-Juel1)FUEK246},
shelfmark = {Chemistry, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:12904051},
UT = {WOS:000184654700060},
doi = {10.1021/ja035498u},
url = {https://juser.fz-juelich.de/record/32504},
}