Electronic transport through single-molecule oligophenyl-diethynyl junctions with direct gold-carbon bonds formed at low temperature - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Nanoscale Advances Année : 2022

Electronic transport through single-molecule oligophenyl-diethynyl junctions with direct gold-carbon bonds formed at low temperature

Résumé

We report on the first systematic transport study of alkynyl-ended oligophenyl-diethynyl (OPA) single-molecule junctions with direct Au-C anchoring scheme at low temperature using the mechanically controlled break junction technique. Through quantitative statistical analysis of opening traces, conductance histograms and density functional theory studies, we identified different types of junctions, classified by their conductance and stretching behavior, for OPA molecules between Au electrodes with two to four phenyl rings. We performed inelastic electron tunneling spectroscopy and observed the excitation of Au-C vibrational modes confirming the existence of Au-C bonds at low temperature and compared the stability of molecule junctions upon mechanical stretching. Our findings reveal the huge potential for future functional molecule transport studies at low temperature using alkynyl endgroups.

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Chimie
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hal-03512454 , version 1 (05-01-2022)

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Paternité - Pas d'utilisation commerciale

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Gautam Mitra, Vincent Delmas, Hassan Al Sabea, Lucie Norel, Olivier Galangau, et al.. Electronic transport through single-molecule oligophenyl-diethynyl junctions with direct gold-carbon bonds formed at low temperature. Nanoscale Advances, 2022, ⟨10.1039/d1na00650a⟩. ⟨hal-03512454⟩
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