posted on 2023-12-11, 16:40authored byMaría Romero-Ángel, Víctor Rubio-Giménez, Eloy P. Gómez-Oliveira, Margot F. K. Verstreken, Jorid Smets, Jesús Gándara-Loe, Natalia M Padial, Rob Ameloot, Sergio Tatay, Carlos Martí-Gastaldo
Heterobimetallic Metal–Organic Frameworks (MOFs)
synergically
combine the properties of two metal ions, thus offering significant
advantages over homometallic MOFs in gas storage, separation, and
catalysis, among other applications. However, these remain centered
on bulk materials, while applications that require functional coatings
on solid supports are not developed. We explore for the first time
the deposition of heterometallic Ti-based MOF thin films using vapor-assisted
conversion on substrates functionalized with a self-assembled monolayer.
Furthermore, metal-induced dynamic topological transformation allows
the conversion of MUV-10(Ca) films into MUV-101(Co) and MUV-102(Cu),
which is not accessible through direct synthesis, without morphologically
altering the films. These nonconventional thin-film deposition techniques
enable homogeneous and crystalline coatings of heterometallic titanium
MOFs that also maintain their corresponding porosity.