Some solvents and supporting electrolytes studied for electrochemical measurement at liquid/liquid interface

Abstract

AbstractSolvents used as the organic phase of electrochemical measurement at liquid‐liquid interfaces, including phenyl isothiocyanate, o‐dichlorobenzene, benzyl cyanide, propiophenone, methyl cyclohexanone, cyclohexanone, and methyl amyl ketone, have been studied. Mixing solvents of different polarities in different ratios gives a number of new solvent systems that are suitable for showing a useful “potential window,” including the mixed‐solvent systems with nitrobenzene plus phenyl isothiocyanate, nitrobenzene plus o‐dichlorobenzene, nitrobenzene plus ketones, and the mixed solvent without nitrobenzene, such as phenyl isothiocyanate plus benzyl cyanide, phenyl isothiocyanate plus benzonitrile, o‐dichlobenzene plus benzyl cyanide, and chlorobenzene plus benzonitrile. Supporting electrolytes such as cetylpyridinium tetraphenylborate, ethyl violet tetraphenylborate, and triheptyl dodecylammonium tetraphenylborate are also introduced as the organic phase in order to extend the potential range in the negative direction.