Monitoring charge transfer at polarisable liquid/liquid interfaces employing time-resolved Raman spectroelectrochemistry

作者：Ibanez D; Plana D; Heras A; Fermin D J; Colina A^*

来源：Electrochemistry Communications, 2015, 54: 14-17.

DOI：10.1016/j.elecom.2015.02.012

• Liquid/liquid interfaces
• Ion transfer
• Electron transfer
• In-situ Raman spectroscopy

In-situ Raman spectroscopy is implemented for the first time to monitor dynamic charge transfer processes at polarisable interfaces between two immiscible electrolyte solutions (ITIES) in real time. A custom-designed new electrochemical cell is described which allows probing the Raman signals of ferroin ions as a function of the potential applied across the water vertical bar 1,2-dichlorobenzene (DCB) interface. This approach is also used for investigating the heterogeneous electron transfer reaction involving dimethylferrocene in DCB and potassium hexacyanoferrate (II/III) in the aqueous phase. The evolution of the Raman signals during potentiodynamic measurements is recorded in real-time with a resolution of a few seconds.

• 出版日期2015-5