Investigating Localized Electrochemical of Ferrocenyl-Imidazolium in Ionic Liquid Using Scanning Electrochemical Microscopy Configuration - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Molecules Année : 2022

Investigating Localized Electrochemical of Ferrocenyl-Imidazolium in Ionic Liquid Using Scanning Electrochemical Microscopy Configuration

Résumé

In the present work, the localized electrochemical behavior of redox molecule in ionic liquid has been investigated using scanning electrochemical microscopy. The electrochemical response of ferrocenyl-imidazolium redox mediator was studied by recording approach curves over a conducting and insulating substrate in an undiluted ionic liquid. The SECM approach curve over the conducting substrate displays a positive feedback, as observed in classical solvent. However, in the case of the insulating substrate, the approach curve reveals different shapes, depending on the used approach speed. In this configuration, low approach speed is necessary to reach the expected negative feedback. Interestingly, at a very close distance between the UME and the insulating substrate, a thin film behavior is revealed. In addition, the approach curves on both insulator and conducting substrates can be reconstructed from punctual responses at different distance tip-substrate. The latter match perfectly with the expected theoretical curves over conducting and insulating under diffusion control.
Fichier principal
Vignette du fichier
molecules-27-06004 (3).pdf (1019.34 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03813110 , version 1 (13-10-2022)

Identifiants

Citer

Thuan-Nguyen Pham-Truong, Jalal Ghilane. Investigating Localized Electrochemical of Ferrocenyl-Imidazolium in Ionic Liquid Using Scanning Electrochemical Microscopy Configuration. Molecules, 2022, 27 (18), pp.6004. ⟨10.3390/molecules27186004⟩. ⟨hal-03813110⟩
18 Consultations
41 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More