2024-03-29T00:02:54Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1476762017-12-18T13:56:07Zcom_10261_31com_10261_3col_10261_284
00925njm 22002777a 4500
dc
Osorio, Henrry M.
author
Cea, Pilar
author
Hartl, František
author
Low, Paul J.
author
Martín, Santiago
author
Nichols, Richard J.
author
2015
Electrochemical gating at the single molecule level of viologen molecular bridges in ionic liquids is examined. Contrary to previous data recorded in aqueous electrolytes, a clear and sharp peak in the single molecule conductance versus electrochemical potential data is obtained in ionic liquids. These data are rationalized in terms of a two-step electrochemical model for charge transport across the redox bridge. In this model the gate coupling in the ionic liquid is found to be fully effective with a modeled gate coupling parameter, ξ, of unity. This compares to a much lower gate coupling parameter of 0.2 for the equivalent aqueous gating system. This study shows that ionic liquids are far more effective media for gating the conductance of single molecules than either solid-state three-terminal platforms created using nanolithography, or aqueous media.
Journal of the American Chemical Society 137(45): 14319-14328 (2015)
http://hdl.handle.net/10261/147676
10.1021/jacs.5b08431
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100004299
http://dx.doi.org/10.13039/501100000923
http://dx.doi.org/10.13039/501100000266
Electrochemical single-molecule transistors with optimized gate coupling