Direct comparison of the electronic coupling efficiency of sulfur and selenium alligator clips for molecules adsorbed onto gold electrodes

Lionel Patrone; Serge Palacin; Jean-Philippe Bourgoin

Direct comparison of the electronic coupling efficiency of sulfur and selenium alligator clips for molecules adsorbed onto gold electrodes

Lionel Patrone ¹ Serge Palacin ² Jean-Philippe Bourgoin ¹

1 LEM - Laboratoire d'Electronique Moléculaire

2 LCSI - Laboratoire de Chimie des Surfaces et Interfaces

Abstract : Scanning tunneling microscopy experiments have been performed to compare the electronic coupling provided by S and by Se used as alligator clips for bisthiol- and biselenol-terthiophene molecules adsorbed onto gold. The molecules were inserted in a dodecanethiol (DT) self-assembled monolayer. Their apparent height above the dodecanethiol matrix was used as a measure of the electronic coupling strength corresponding to S and Se, respectively. We show that the insertion behaviors of the two molecules are qualitatively the same, and that Se provides systematically a better coupling link than S, whatever the tunneling conditions

Document type :

Journal articles

Domain :

Chemical Sciences / Material chemistry

Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01056949
Contributor : Serge Palacin <>
Submitted on : Thursday, August 21, 2014 - 8:31:14 AM
Last modification on : Thursday, October 26, 2017 - 7:46:01 AM

Direct comparison of the electronic coupling efficiency of sulfur and selenium alligator clips for molecules adsorbed onto gold electrodes

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Direct comparison of the electronic coupling efficiency of sulfur and selenium alligator clips for molecules adsorbed onto gold electrodes

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