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

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
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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

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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. Applied Surface Science, Elsevier, 2003, 121-213, pp.446-451. ⟨10.1016/S0169-4332(03)00130-2⟩. ⟨cea-01056949⟩

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