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Science 18 August 2000:
Vol. 289. no. 5482, pp. 1172 - 1175
DOI: 10.1126/science.289.5482.1172
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Reports

A [2]Catenane-Based Solid State Electronically Reconfigurable Switch

Charles P. Collier, Gunter Mattersteig, Eric W. Wong, Yi Luo, Kristen Beverly, José Sampaio, Françisco M. Raymo, J. Fraser Stoddart,* James R. Heath*

A solid state, electronically addressable, bistable [2]catenane-based molecular switching device was fabricated from a single monolayer of the [2]catenane, anchored with phospholipid counterions, and sandwiched between an n-type polycrystalline silicon bottom electrode and a metallic top electrode. The device exhibits hysteretic (bistable) current/voltage characteristics. The switch is opened at +2 volts, closed at -2 volts, and read at ~0.1 volt and may be recycled many times under ambient conditions. A mechanochemical mechanism for the action of the switch is presented and shown to be consistent with temperature-dependent measurements of the device operation.

Department of Chemistry and Biochemistry, University of California at Los Angeles, 405 Hilgard Avenue, Los Angeles, CA 90095-1569, USA.
*   To whom correspondence should be addressed. E-mail: stoddart{at}chem.ucla.edu (J.F.S.) and heath{at}chem.ucla.edu (J.R.H.)

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