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

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Science  18 Aug 2000:
Vol. 289, Issue 5482, pp. 1172-1175
DOI: 10.1126/science.289.5482.1172

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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.

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