A [2]Catenane-Based Solid State Electronically Reconfigurable Switch
C. Patrick Collier(University of California, Los Angeles), Gunter Mattersteig(University of California, Los Angeles), Eric W. M. Wong(University of California, Los Angeles), Yi Luo(University of California, Los Angeles), K. C. Beverly(University of California, Los Angeles), J. F. Sampaio(University of California, Los Angeles), Françisco M. Raymo(University of California, Los Angeles), J. Fraser Stoddart(University of California, Los Angeles), James R. Heath(University of California, Los Angeles)
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Abstract
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 approximately 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.
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