Construction of Stable Helical Metal-Organic Frameworks with a Conformationally Rigid "Concave Ligand".
Chemistry
; 27(42): 10833-10838, 2021 Jul 26.
Article
em En
| MEDLINE
| ID: mdl-34033693
ABSTRACT
A helical metal-organic framework was prepared by using a conformationally rigid tetratopic benzoic acid ligand with binding units pointing toward each other (concave ligand). To avoid the obvious intramolecular interactions between binding units, matching spacing groups were applied to introduce atropic repulsion, thereby allowing the formation of extended frameworks for the first time. With this new ligand design, a helical-shaped MOF with significantly improved air and moisture stability was successfully prepared, thus providing a new strategy for ligand design toward porous material constructions.
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MEDLINE
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En
Ano de publicação:
2021
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Article