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Granick, Steve
CSLM(Center for Soft and Living Matter) Lab
Research Interests
  • Chemistry, physics, biology, engineering

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Metal-Organic Framework swimmers with Energy-Efficient Autonomous Motility

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Title
Metal-Organic Framework swimmers with Energy-Efficient Autonomous Motility
Author
Park, Jun H.Lach, SlawomirPolev, KonstantinGranick, SteveGrzybowski, Bartosz A.
Keywords
autonomous motion; collective behavior; metal− organic frameworks; microstructure; surface tension
Issue Date
201711
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.11, no.11, pp.10914 - 10923
Abstract
Placed at a water/air interface, particles of porphyrin-based MOFs (metal-organic frameworks) cut from large-area films display efficient, multiple-use autonomous motility powered by release of solvents incorporated in the MOF matrix and directionality dictated by their shapes. The particles can be refueled multiple times and can achieve speeds of ca. 200 mm·s-1 with high kinetic energy per unit of chemical fuel expended (>50 μJ·g-1). Efficiency of motion depends on the nature of the fuel used as well as the microstructure and surface wettability of the MOF surface. When multiple movers are present at the interface, they organize into open structures that exhibit collective, time-periodic motions.
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DOI
http://dx.doi.org/10.1021/acsnano.7b04644
ISSN
1936-0851
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