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Published October 22, 2014 | Supplemental Material
Journal Article Open

Energetically Demanding transport in a Supramolecular Assembly


A challenge in contemporary chemistry is the realization of artificial molecular machines that can perform work in solution on their environments. Here, we report on the design and production of a supramolecular flashing energy ratchet capable of processing chemical fuel generated by redox changes to drive a ring in one direction relative to a dumbbell toward an energetically uphill state. The kinetics of the reaction pathway juxtapose a low energy [2]pseudorotaxane that forms under equilibrium conditions with a high energy, metastable [2]pseudorotaxane which resides away from equilibrium.

Additional Information

© 2014 American Chemical Society. Received: August 21, 2014; Published: September 25, 2014. This material is based on work supported by the National Science Foundation (NSF) under CHE-1308107. W.-G.L. and W.A.G. thank NSF (CMMI-1120890 and EFRI-1332411) for financial support and to ONR-DURIP and NSF-CSEM for computing resources.

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August 20, 2023
October 18, 2023