Fast and complete electrochemical conversion of solutes contained in microvolume water droplets

Printer-friendly version

Fast and complete electrochemical conversion of solutes contained in microvolume water droplets, Electrochemistry Communications 86 (2018) 145–148

 

The miniaturization of reaction vessels is a growing concern in modern preparative and analytical chemistry. Indeed, the obvious substrate economy realized upon downsizing volumes is associated with the development of flow reactors allowing fast, successive synthetic steps as well as multiple analyte determination in microfluidic analyzers.

 

 

One of the simplest and smallest setups allowed the achievement of fast and complete electrochemical conversions, from examples taken among organic substrates or inorganic species. Electrochemical preparations in droplets from the same setup should also be accessible in organic solvents, upon confinement within a chamber allowing saturated solvent vapor pressure, as described for analytical applications. The possibility to carry out either controlled-potential electrolyses (3 electrodes) or galvanostatic ones (2 electrodes) make such a fast, low-amount/low cost electrochemistry available and attractive for the novice or occasional operators as well as for teachers looking for simple electrochemical experiments.

 

 

Résumé: 

Electrochemistry Communications 86 (2018) 145–148

 

An elegant hanging-droplet or meniscus-based setup is proposed to carry out quantitative electrolyses from either an organic (hydroquinone) or an inorganic (permanganate) substrate. These examples validate the concept of using such easily accessible, fast (1–3 min) and low-cost operating conditions not only for preparative applications (electrosynthesis), but also for pedagogical purposes in minute samples.

Equipe de rattachement 8640: 
Électrochimie
Adresse mail du contact: 
Références: 

Fast and complete electrochemical conversion of solutes contained in microvolume water droplets

 

Louis Godeffroy, François Chau, Olivier Buriez, Eric Labbé

 

Electrochemistry Communications 86 (2018) 145–148

 

doi: 10.1016/j.elecom.2017.12.007