Nano-Micro Letters

Nano-molecular Junctions on STM Tips

Chun Huang*, Jianshu Yang

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Nano-Micro Letters, , Volume 3, Issue 1, pp 1-5
Publication Date (Web): March 31, 2011 (Article)




Figure 1 (a) Schematic of the junction geometry used. Molecules self assembled onto a gold coated STM tip are brought up to a Au(111) surface. (b) Schematic structures of the molecules investigated. BPEBT is a molecular wire. FFBT is a molecular diode.

We present a technique for metal-organic-metal junctions, which contain ten or fewer conjugated molecules between each of such junction, and the investigation of the I-V response of these junctions. The junctions are made by self assembling thiolated molecules onto gold coated tips for use in scanning tunneling microscopy.  We show that this easy technique probes the qualitative properties of the molecules. Current-voltage characteristics of a Tour wire and a new molecular rectifier are presented.



STM; Junction; I-V response; Molecules; Tour wire


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