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Title

Can atomic buckling control a chemical reaction? The case of Dehydrogenation of Phthalocyanine Molecules on GdAu2/Au(111)

AuthorsFarnesi Camellone, Matteo; Correa, Ana; Barragán, Ana; Pedio, Maddalena; Fabris, Stefano; Cepek, Cinzia; Vitali, Lucia
Issue Date21-Mar-2019
PublisherAmerican Chemical Society
CitationJournal of Physical Chemistry C 123(11): 6496-6501 (2019)
AbstractThe efficiency of chemical reactions on surfaces is traditionally related to their lattice structures. The periodic out-of-plane lattice distortions of supported two-dimensional layers offer an alternative strategy to surface functionalization, scarcely investigated so far. Here, we show that the variable buckling geometry of a GdAu2 Moiré overlayer supported on the Au(111) surface exposes specific single-atom sites that control the dehydrogenation process of phthalocyanine (H2-PC) molecules, limiting their reactivity to about 1/3 of the monolayer. The lattice mismatch between the substrate and the alloy layer leads to the previously reported outward displacement of distinct Gd sites. We show that these atomic sites promote the selective dehydrogenation of H2-PC molecules.
Publisher version (URL)http://dx.doi.org/10.1021/acs.jpcc.8b11412
URIhttp://hdl.handle.net/10261/203186
DOIhttp://dx.doi.org/10.1021/acs.jpcc.8b11412
Identifiersdoi: 10.1021/acs.jpcc.8b11412
e-issn: 1932-7455
issn: 1932-7447
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