Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 139, Issue 2, Pages 611-614Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b11899
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Funding
- National Science Foundation, Division of Chemistry [CHE-1359906]
- Defense Threat Reduction Agency Joint Science and Technology Office for Chemical and Biological Defense [HDTRA1-14-1-0064]
- China Scholarship Council (CSC)
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1359906] Funding Source: National Science Foundation
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Herein, we report that UiO-type (UiO = University of Oslo) metal organic frameworks (MOFs) can be transformed into self-propelled micromotors by employing several different metal-based propulsion systems. Incorporation of a bipyridine ligand into the UiO-67 lattice transforms the crystallites, upon metalation, into single-site, metal-based catalytic engines to power the micromotors with chemical fuel. The engine performance (i.e., propulsion) of the single-site powered micromotors has been tuned by the choice of the metal ion utilized. In addition, a chemical braking system was achieved by adding chelating agents capable of sequestering the metal ion engines and thereby suppressing the catalytic activity, with different chelators displaying different deceleration capacities. These results demonstrate that MOFs can be powered by various engines and halted by different brakes, resulting in a high degree of motion design and control at the nanoscale.
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