Electron Transfer Reaction Between Ferrocene and Tris (1,10‐Phenanthroline) Cobalt (HI) in Micellar Systems

The kinetics of the electron transfer reaction between ferrocene and tris (1, 10‐phenanthroline) Cobalt (III) have been studied by the stopped‐flow method at 20.0°C and ionic strength 0.02 mol dm−3 in the presence of anionic (SDS), cationic (CTAB) and non‐ionic (Triton X‐100) micelles. Cationic and non‐ionic micelles inhibit the oxidation reaction according to a model in which the ferrocene is partitioned between the aqueous and micellar pseudo‐phases, the reaction proceeding primarily in the aqueous phase. On the contrary anionic micelles catalyze the reaction which occurs in the micellar phase. The estimated binding constants of ferrocene to the different micelles are quite similar.