Interaction between perylene-derivated molecules observed by low temperature scanning tunneling microscopy - Groupe Nanosciences Accéder directement au contenu
Article Dans Une Revue Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces Année : 2018

Interaction between perylene-derivated molecules observed by low temperature scanning tunneling microscopy

Loranne Vernisse
Olivier Guillermet
André Gourdon

Résumé

Derivative perylene molecules deposited on Ag(111) and on NaCl(001) ultra-thin layers have been investigated using low temperature STM and NC-AFM. When the metallic substrate is held at ambient temperature during evaporation, the molecules form characteristic trimers on the Ag(111) surface and interact through their polar groups. Close to the steps, the molecules form linear structures and seems to stand side by side. On the other hand, after deposition on a substrate cooled at liquid helium temperature, single molecules are observed both on metal and on NaCl. On the ultrathin insulator layers, the STM images present characteristic contrasts related to the molecular orbitals which favours the localization of aldehyde groups. In this case, the lateral molecular interactions may induce the formation of small assemblies in which the electronic levels are slightly shifted. A possible interpretation of this phenomenon is to take into account polar interactions and charge transfer between neighboring molecules.
Fichier principal
Vignette du fichier
interaction-perylene-derivated.pdf (2.87 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01804340 , version 1 (31-05-2018)

Identifiants

Citer

Loranne Vernisse, Olivier Guillermet, André Gourdon, Roland Coratger. Interaction between perylene-derivated molecules observed by low temperature scanning tunneling microscopy. Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2018, 669, pp.87-94. ⟨10.1016/j.susc.2017.11.008⟩. ⟨hal-01804340⟩
197 Consultations
144 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More