Electrochemically Controlled Conductance Switching in a Single Molecule: Quinone-Modified Oligo(phenylene vinylene)
Author(s):
Stanislav Tsoi, Igor Griva, Scott A. Trammell, Amy S. Blum, Joel M. Schnur, Nikolai Lebedev
Journal:
ACS Nano
Year:
2008
Volume:
2
Pages
1289–1295
DOI:
10.1021/nn8002218
Abstract:
Reversible conductance switching in single quinone-oligo(phenylene vinylene) (Q-OPV) molecules was demonstrated using electrochemical STM. The switching was achieved by application of electrochemical potential to the substrate supporting the molecule. The ratio of conductances between the high- and low-conductivity states is over 40. The high-conductivity state is ascribed to strong electron delocalization of the fully conjugated hydroquinone-OPV structure, whereas the low-conductivity state is characterized by disruption of electron delocalization in the quinone-OPV structure.