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Energetically Demanding transport in a Supramolecular Assembly

Cheng, Chuyang and McGonigal, Paul R. and Liu, Wei-Guang and Li, Hao and Vermeulen, Nicolaas A. and Ke, Chenfeng and Frasconi, Marco and Stern, Charlotte L. and Goddard, William A., III and Stoddart, J. Fraser (2014) Energetically Demanding transport in a Supramolecular Assembly. Journal of the American Chemical Society, 136 (42). pp. 14702-14705. ISSN 0002-7863. doi:10.1021/ja508615f.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle Information
Cheng, Chuyang0000-0002-3834-0479
McGonigal, Paul R.0000-0002-8538-7579
Liu, Wei-Guang0000-0002-6633-7795
Vermeulen, Nicolaas A.0000-0003-1825-4474
Ke, Chenfeng0000-0002-4689-8923
Frasconi, Marco0000-0003-2010-175X
Goddard, William A., III0000-0003-0097-5716
Stoddart, J. Fraser0000-0003-3161-3697
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.
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
Issue or Number:42
Record Number:CaltechAUTHORS:20141201-093845341
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Official Citation: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 III, and J. Fraser Stoddart Journal of the American Chemical Society 2014 136 (42), 14702-14705
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52206
Deposited By: Tony Diaz
Deposited On:01 Dec 2014 17:56
Last Modified:10 Nov 2021 19:22

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