Three lanthanide-based metal–organic frameworks,
[Tb(HMDIA)(H2O)3]·H2O (Tb-MDIA), [Ho(HMDIA)(H2O)3]·(H2O)2 (Ho-MDIA), and [Nd(HMDIA)(H2O)3]·(H2O)2 (Nd-MDIA) from the same V-shaped ligand 5,5′-methylenediisophthalic
acid (H4MDIA), were prepared by mixing Ln3+ and
H4MDIA under solvothermal conditions. The crystal structures
of the three complexes were determined by single-crystal X-ray diffraction.
The different coordination modes of the organic ligands resulted in
different framework structures among the three complexes. The luminescent
properties of Ln-MDIA in the ultraviolet–visible
region were also studied. Interestingly, the bright-green emitter Tb-MDIA showed high selectivity and sensitivity to allow the
naked-eye visualization of Fe3+ ions and picric acid (PA)
explosive, and both sensing mechanisms were revealed. Finally, Ho-MDIA and Nd-MDIA were shown to work as heterogeneous
catalysts for the cyanosilylation reaction of aromatic aldehydes,
and the catalysts could be recycled at least three times without any
decrease in activity.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.