Electrochemistry of single droplets of inverse (water-in-oil) emulsions. Issue 24 (13th June 2017)

• Record Type: Journal Article
• Authors: Zhang, Haozhi; Sepunaru, Lior; Sokolov, Stanislav V.; Laborda, Eduardo; Batchelor-McAuley, Christopher; Compton, Richard G.
• Is Part Of: Physical chemistry chemical physics. Volume 19:Issue 24(2017)
• Page Start: 15662
• Page End: 15666
• Publication Date: 2017-06-13
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c7cp03300a
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : Single water droplet electrochemistry investigated for the first time, reveals the biphasic kinetics of ion transfer within water-in-oil emulsions. Abstract : We demonstrate the feasibility of electrochemically detecting individual water droplets dispersed in an oil phase (inverse emulsions) via the use of a redox probe confined in the droplet phase. The water droplets were tagged with potassium ferrocyanide, and were injected into an electrolyte cyclohexene/dichloromethane oil solution. Via simple cyclic voltammetry scans it is shown that single water droplets from a water-in-oil emulsion can be detected provided that rapid anion transfer from the oil to the water phase maintains electro-neutrality in the droplet.