Dual-Responsive Molecular Switches Based on Dithienylethene-Ru-II Organometallics in Self-Assembled Monolayers Operating at Low Voltage - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Chemistry - A European Journal Année : 2017

Dual-Responsive Molecular Switches Based on Dithienylethene-Ru-II Organometallics in Self-Assembled Monolayers Operating at Low Voltage

Résumé

Two carbon-rich ruthenium complexes bearing a dithienylethene (DTE) unit and a hexylthiol spacer were designed to be attached on gold surfaces. Both compounds display photochemically driven switching properties, allowing reversible conversion from open to closed forms of the DTE units upon irradiation in solution. In contrast, only the bimetallic complex undergoes an efficient electrochemical ring closure at low potential, (0.5V vs. SCE), whereas the monometallic complex shows a simple one-electron reversible redox event. These appealing switching properties could be successfully transferred within diluted self-assembled monolayers (SAMs). Furthermore, the two immobilized organometallics exhibit fast electron-transfer kinetics. Therefore, this organometallic strategy allows us to obtain multifunctional surfaces with the possibility of combining switching events triggered by an electrochemical oxidation at low potential and by light at distinct wavelengths for a write-and-erase function, along with an access to different oxidation states. Importantly, a non-destructive electrochemical read-out is achieved at a sufficiently high scan rate that prevents any electrochemical closing. On the whole, the two surface-confined organometallic compounds exhibit appealing properties for application in molecular electronics.
Fichier principal
Vignette du fichier
Mulas et al. - Dual-Responsive Molecular Switches based on Dithie.pdf (8.02 Mo) Télécharger le fichier
chem201701903-sup-0001-misc_information.pdf (457.04 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01578549 , version 1 (29-08-2017)

Identifiants

Citer

Andrea Mulas, Xiaoyan He, Yves-Marie Hervault, Lucie Norel, Stéphane Rigaut, et al.. Dual-Responsive Molecular Switches Based on Dithienylethene-Ru-II Organometallics in Self-Assembled Monolayers Operating at Low Voltage. Chemistry - A European Journal, 2017, 23 (42), pp.10205--10214. ⟨10.1002/chem.201701903⟩. ⟨hal-01578549⟩
77 Consultations
216 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More