Enhancing electron transport in molecular wires by insertion of a ferrocene center?
Physical Chemistry Chemical Physics Pub Date: 2013-11-14 DOI: 10.1039/C3CP53269K
Abstract
We have determined the conductance of alkane-linked ferrocene molecules with carboxylic acid anchoring groups using the STM break junction technique, and three sets of conductance values were found, i.e. high conductance (HC), medium conductance (MC) and low conductance (LC) values. The enhancing effect of the incorporated ferrocene on the electron transport in saturated alkane molecular wires is demonstrated by the increased conductance of the ferrocene molecules, attributed to the reduction of the tunneling barrier and the HOMO–LUMO gap induced by the insertion of ferrocene. Furthermore, the electron-withdrawing carbonyl group on the unconjugated backbone has little or no influence on single-molecule conductance. The current work provides a feasible approach for the design of high-performance molecular wires.
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Journal Name：Physical Chemistry Chemical Physics
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CAS no.: 89640-58-4
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