RESUMEN

A new molecular wire suitably functionalized with sulfur atoms at terminal positions and endowed with a central redox active TTF unit has been synthesized and inserted within two atomic-sized Au electrodes; electrical transport measurements have been performed in STM and MCBJ set-ups in a liquid environment and reveal conductance values around 10(-2) G0 for a single molecule.

RESUMEN

We present electronic transport measurements through thiolated C(60) molecules in a liquid environment. The molecules were placed within a mechanically controllable break junction using a single anchoring group per molecule. On varying the electrode separation of the C(60)-modified junctions, we observed a peak in the conductance traces. The shape of the curves is strongly influenced by the environment of the junction as shown by measurements in two distinct solvents. In the framework of a simple resonant tunnelling model, we can extract the electronic tunnelling rates governing the transport properties of the junctions.

Asunto(s)

Nanoestructuras/química , Nanotecnología/instrumentación , Nanotecnología/métodos , Aire , Dimetilsulfóxido/química , Conductividad Eléctrica , Electrones , Oro/química , Ensayo de Materiales , Nanopartículas del Metal/química , Metales , Microscopía Electrónica de Rastreo , Modelos Estadísticos , Solventes , Tolueno/química