Voltammetry of ferrocene in subcritical and supercritical chlorodifluoromethane

The voltammetry of decamethylferrocene and coboltacene in supercritical difluoromethane (R32)

“…The diffusion coefficient for solutes in supercritical fluids depends on both pressure and temperature, because these affect the viscosity and because it is an activated process, so direct comparison with values in the literature is not straightforward. However, our value for the diffusion coefficient for DMFc is in the same range as values for ferrocene [24,25] and DMFc [21,28] [44] suggests that at pressures well above p c , as used here, the effect of solutes should be small.…”

“…Olsen and Tallman [25] showed a typical microelectrode response very similar to that found in the liquid solvent at 299 K, although they did see some evidence for passivation of the electrode surface.…”

Electrochemical detection in open tubular column supercritical fluid chromatography using a platinum microelectrode and CO2/water as mobile phase

“…Ferrocene was chosen as test subconsisting of supercritical carbon dioxide modified stance since the electrochemistry of this compound with only small amounts of water. This result has been previously studied in supercritical media shows that the increase in conductivity provided by [5,10,[14][15][16][17]22,23].…”

Electrochemistry in supercritical fluids: A mini review

“…To overcome this issue, halogenated SCFs have been proposed as a viable alternative to CO 2 (Table 1). Amongst the first examples reported, Olsen and Tallman initially described the voltammetry of Fc in CHClF 2 under sub-and supercritical conditions [26]. The Fc/Fc + redox couple was found to behave reversibly in this SCF at platinum microelectrodes with small concentrations of [ n Bu 4 N] + [BF 4 ] − as supporting electrolyte.…”