Complex topologies in co-crystals are attracting the attention of the scientific community due to their often unique properties. However, the design, preparation, and control over the self-assembly process of these systems remain a challenging task. Here, we demonstrate a facile, solvent-free strategy to control the supramolecular trajectory of the self-assembly of a three-component crystalline adduct via mechanosynthesis; i.e., ball milling. Through modification of milling conditions, e.g., by choosing the number and size of milling balls, it is possible to switch topological selectivity between a non-interpenetrated and Borromean-type entanglement. These results pave the way for the controlled solvent-free synthesis of novel materials with complex topologies and unexplored functionalities.
Open versus Interpenetrated: Switchable Supramolecular Trajectories in Mechanosynthesis of a Halogen-Bonded Borromean Network / Catalano, L.; Germann, L. S.; Julien, P. A.; Arhangelskis, M.; Halasz, I.; Uzarevic, K.; Etter, M.; Dinnebier, R. E.; Ursini, M.; Cametti, M.; Marti-Rujas, J.; Friscic, T.; Metrangolo, P.; Resnati, G.; Terraneo, G.. - In: CHEM. - ISSN 2451-9308. - 7:1(2021), pp. 146-154. [10.1016/j.chempr.2020.10.022]
Open versus Interpenetrated: Switchable Supramolecular Trajectories in Mechanosynthesis of a Halogen-Bonded Borromean Network
Catalano L.;
2021
Abstract
Complex topologies in co-crystals are attracting the attention of the scientific community due to their often unique properties. However, the design, preparation, and control over the self-assembly process of these systems remain a challenging task. Here, we demonstrate a facile, solvent-free strategy to control the supramolecular trajectory of the self-assembly of a three-component crystalline adduct via mechanosynthesis; i.e., ball milling. Through modification of milling conditions, e.g., by choosing the number and size of milling balls, it is possible to switch topological selectivity between a non-interpenetrated and Borromean-type entanglement. These results pave the way for the controlled solvent-free synthesis of novel materials with complex topologies and unexplored functionalities.
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