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Reaction of a new metal organic complex by water’s action on Cu(110)

AuthorsHernández-Rodríguez, Irene; Otero, Gonzalo ; Palacios Rivera, Rogger; Palomares, F. Javier ; López, María Francisca ; Zamora, Félix; Andrés, Pedro L. de ; Martín-Gago, José A. ; Méndez, Javier
Issue DateSep-2016
CitationFuerzas y Túnel (2016)
AbstractThe control over the functionality, size and shape of new nanostructures is a mayor goal in nanoscience1. The bottom up strategies for forming on surface nanostructures by direct sublimation of their building blocks under UHV conditions has been shown as an excellent approach to this goal2. The stability for the molecule to allow sublimation without structural damage presents a limitation. For this reason, in most of previous studies of large complex molecules on surfaces the molecules were transferred from a solution or by a dry imprint technique to the substrate in order to preserve the fragile core3. In this work we focus on a transition metal complex [Cu4(m3-Cl)4(m-pym2S2)4] (pym2S2= dipyrimidinedisulfide) (named Cu4) with a robust structure [Fig.1a]. We have shown to be able to sublimate them keeping its molecular integrity and how they self-assemble without being disrupted by the surface4 [Fig. 1b]. The transformation of these huge metal-organic molecules in solution5 is clearly altered by the role of the substrate. We have observed in situ how the self-assembled molecular chains transform into other smaller chains by water’s action [Fig. 1c]. The combination of surface techniques LEED, STM-VT, XPS and DFT calculations let us to the understanding of the reaction between Cu4 molecules and the Cu(110) substrate by water action. The new formed structure exhibits chains that are 60° rotated respect to the original ones. We propose a model for such a structure corresponding to a new polymeric bidimensional metal-organic compound of formula [Cu(μ-pym2S2)(μ- Cl)]n.
DescriptionTrabajo presentado en la conferencia Fuerzas y Túnel (FyT2016), celebrada en Girona del 5 al 7 de septiembre de 2016.
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(ICMM) Comunicaciones congresos
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