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Instruments / Technical Area	Publication Details	Published	Actions
I07-Surface & interface diffraction	Bottom-up fabrication of semiconductive metal–organic framework ultrathin films Víctor Rubio-Giménez , Marta Galbiati , Javier Castells-Gil , Neyvis Almora-Barrios , José Navarro-Sánchez , Garin Escorcia-Ariza , Michele Mattera , Thomas Arnold , Jonathan Rawle , Sergio Tatay , Eugenio Coronado , Carlos Marti-Gastaldo Advanced Materials 55 DOI: 10.1002/adma.201704291 Diamond Proposal Number(s): [14495] Show Abstract ▼ Abstract: Though generally considered insulating, recent progress on the discovery of conductive porous metal–organic frameworks (MOFs) offers new opportunities for their integration as electroactive components in electronic devices. Compared to classical semiconductors, these metal–organic hybrids combine the crystallinity of inorganic materials with easier chemical functionalization and processability. Still, future development depends on the ability to produce high-quality films with fine control over their orientation, crystallinity, homogeneity, and thickness. Here self-assembled monolayer substrate modification and bottom-up techniques are used to produce preferentially oriented, ultrathin, conductive films of Cu-CAT-1. The approach permits to fabricate and study the electrical response of MOF-based devices incorporating the thinnest MOF film reported thus far (10 nm thick).	Jan 2018
I07-Surface & interface diffraction	Spontaneous growth of 2D coordination polymers on functionalized ferromagnetic surfaces Michele Mattera , Victor Rubio-Gimenez , Sophie Delprat , Richard Mattana , Pierre Seneor , Sergio Tatay , Alicia Forment-Aliaga , Eugenio Coronado Chemical Science 96 DOI: 10.1039/C8SC03067G Diamond Proposal Number(s): [14922] Open Access Show Abstract ▼ Abstract: The spontaneous growth of lamellar metal-alkanethiolates (LMAs) on reactive ferromagnetic surfaces as a result of surface oxidation has been observed. When alkanethiol self-assembled monolayers (SAMs) grown under an inert atmosphere over cobalt or permalloy (Ni80Fe20) are exposed to air, oxygen diffuses through the molecular layer. This induces an oxidation of metal atoms at the metal surface and a release of the resulting metal cations that migrate coordinated by the alkanethiol molecules to form lamellar structures over the SAMs. This process has been imaged in real-time, under ambient conditions, by means of different microscopy techniques. The influence of the alkyl chain length, the nature of the ferromagnet, the temperature and the atmospheric moisture on the number, area and height of the resulting features has been systematically evaluated. Remarkably, the possibility to follow the migration in real-time makes it a promising model system for the study of surface/molecule interface processes. Most importantly, the composition and crystallinity of these LMAs have been studied, evidencing that real 2D coordination polymers are formed on the surface. Hence, one could envision this strategy as a new method for the assembly of more complex low-dimensional (2D) magnetic materials based on coordination polymers.	Sep 2018

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