Transitional MOFs: Exposing Metal Sites with Porosity for Enhancing Catalytic Reaction Performance.

The exploration of transitional metal-organic frameworks (MOFs) is important because of their unique properties and promising applications. Hence, finding a suitable strategy to design transitional MOFs with different states has become a key issue. Herein, we develop a modulator-induced strategy for fabricating transitional MOFs with carboxylic ligands by building esterification reaction. The exposed metal sites, mesoporous systems, morphologies, crystallinities, and components of transitional MOFs can be finely controlled when different modulators are employed. Notably, the Pt/solid-transitional MOF catalyst with more mesopores enhances conversion in the hydrogenation reaction of