Our study of the nanoscale properties of a family of 2D FeII Hoffmann-like coordination polymers was just published as an article in Chemistry of Materials. This collaboration between from FuniMat and SMolMat research groups of the ICMol, and scientist from the DELTA synchrotron of TU Dortmund. We report the fabrication of ultrathin films of (thickness < 30 nm) of this family of 2D FeII Hoffmann-like coordination polymers, and the subsequent study of their electronic and structural properties at the nanoscale. This type of study is unprecedented in spin crossover coordination polymers and contributes to the perspective integration of these materials into the field of electronics. You can read the full text here

Check our last collaboration with Mateo-Alonso´s group in Polymat. Marta-COF-1 is a nonplanar 2D-COF in which the waviness of the framework does not disrupt the interlayer p-p stacking so their charge transporting properties are similar to those of the best performing planar 2D COFs. The high stability and crystallinity of Marta-COF-1 have allowed an extraordinary level of characterization by HR-TEM, showing chairlike honeycomb facets and aligned mesoporous channels consistent with the experimental and predicted dimensions and packing. For more info see here

Natalia´s work is already available at JACS. The design of metal–organic frameworks with chemical stability is limited to metal connectors as carboxylates or azolates. Inspired by the chemistry of siderophores, we report a hydroxamate titanium framework that combines photoactivity with hydrolytic stability. The straightforward derivatization of carboxylic linkers with hydroxamic groups might represent an alternative route to broaden the family of reticular solids. Check it out!

Our work in collaboration with J.R. Galan-Mascaros’ group at ICIQ has been published in JACS. This work highlights the versatility and efficiency of TAMOF-1 as a chiral stationary phase capable of separating a variety of model racemic mixtures, including drugs, in a wide range of solvents of different polarity. This performance arises from the combination of chiral channels and weak binding sites allowing for low-energy separation of enantiomers, without any strong binding/recognition sites. Click for more info

Víctor’s study on the nanostructuration of spin crossover coordination polymers has just been published in Chemical Science. A collaborative endeavor with contributions from FuniMat, RTMM and SMolMat groups of the ICMol, together with Unité Mixte de Physique CNRS/Thales and DEIMOS beamline of the Soleil synchrotron. Below a critical thickness, the completeness of the spin transition is sharply affected due to an equally dramatic film microstructure transition from fully coalesced layer into segregated nanocrystalline particles. This careful examination of the spin crossover properties of films at the nanoscale provides relevant information for scientists working towards the integration of this switchable materials into nanometric electronic and spintronic devices. For more details take a look at the full text here

On a recently published joint work, Jose, Neyvis and Belén used a novel method to induce the translocation of an enzyme into the pores of a MOF. Their procedure is based in a partial denaturation of the enzyme followed by its refolding into the polar cavities offered by the host. Thanks to a combination of experimental and theoretical work, we managed to demonstrate that the enzyme adopts a different conformation inside the MOF, granting it enhanced activity, stability and recyclability. The work is now available in Chemical Science

Javi reports the synthesis of the first mesoporous titanium-organic framework, now available in Chemical Science. The use of High-Throughput (HT) methodologies enabled the synthesis of highly crystalline MIL-100(Ti). Compared to the classical Fe phase, this MOF shows improved chemical stability and retains the photoactivity intrinsic to Ti(IV) centers. Photocatalytic H2 production was demonstrated in collaboration with Hermenegildo García’s group at the Instituto of Tecnología Química. For more details check the link

Alejandro’s work has just been published in Angewandte Chemie Int. Ed. In this paper, Single-Crystal X-Ray Diffraction is used to follow the restricted polymerization of pyrrole inside a cyclodextrin MOF, which generates discrete units of highly reactive cationic terpyrrole inside the pores. This work gives unprecedented information about the host-guest interactions that limit the formation of polymers, that can be useful to future works using MOFs as templates for polymerization processes. For more info see here