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@ARTICLE{Loru:482830,
author = {Loru, Donatella and Steber, Amanda and Perez Cuadrado,
Cristobal and Obenchain, Daniel and Temelso, Berhane and
Lopez, Juan Carlos and Schnell, Melanie},
title = {{Q}uantum tunnelling facilitates the water motion across
the surface of phenanthrene},
journal = {Journal of the American Chemical Society},
volume = {145},
number = {31},
issn = {0002-7863},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {PUBDB-2022-04965},
pages = {17201 - 17210},
year = {2023},
abstract = {Quantum tunnelling is a fundamental phenomenon that plays a
pivotal role in the motion and interaction of atoms and
molecules. In particular, its influence in the interaction
between water molecules and carbon surfaces can have
significant implications for a multitude of fields ranging
from atmospheric chemistry to separation technologies. Here,
we unveil at the molecular level the complex motion dynamics
of a single water molecule on the planar surface of the
polycyclic aromatic hydrocarbon phenanthrene, which was used
as a small-scale carbon surface-like model. In this system,
the water molecule interacts with the substrate through weak
O-H ...$\pi$ hydrogen bonds, in which phenanthrene acts as
the hydrogen bond acceptor via the high electron density of
its aromatic cloud. The rotational spectrum, which was
recorded using chirped-pulse Fourier transform microwave
spectroscopy, exhibits characteristic line splittings as
dynamical features. The nature of the internal dynamics was
elucidated in great detail with the investigation of the
isotope-substitution effect on the line splittings in the
rotational spectra of the H$_2$$^{18}$O, D$_2$O and HDO
isotopologues of the phenanthrene-H$_2$O complex. The
spectral analysis revealed a complex internal dynamic
showing a concerted tunnelling motion of the water involving
its internal rotation and its translation between the two
equivalent peripheral rings of phenanthrene. This
high-resolution spectroscopy study presents the observation
of a tunnelling motion exhibited by the water monomer when
interacting with a planar carbon surface with an
unprecedented level of detail. This can serve as a
small-scale analogue for water motions on large aromatic
surfaces, i.e., large polycyclic-aromatic hydrocarbons and
graphene.},
cin = {FS-SMP},
ddc = {540},
cid = {I:(DE-H253)FS-SMP-20171124},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631) / ASTROROT - Unraveling interstellar chemistry
with broadband microwave spectroscopy and next-generation
telescope arrays (638027)},
pid = {G:(DE-HGF)POF4-631 / G:(EU-Grant)638027},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {37494139},
UT = {WOS:001036869800001},
doi = {10.1021/jacs.3c04281},
url = {https://bib-pubdb1.desy.de/record/482830},
}