Energetically demanding transport in a supramolecular assembly

Chuyang Cheng, Paul R. McGonigal, Wei Guang Liu, Hao Li, Nicolaas A. Vermeulen, Chenfeng Ke, Marco Frasconi, Charlotte L. Stern, William A. Goddard, J. Fraser Stoddart*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)14702-14705
Number of pages4
JournalJournal of the American Chemical Society
Issue number42
StatePublished - Oct 22 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry
  • Catalysis
  • Colloid and Surface Chemistry


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