Kinetic and Electrochemical Studies of N-Benzoylleucomethylene Blue and Hexacyanoferrate (3) Ion in Brij 35-SDS Mixed Micellar Solutions

摘要

The Kinetic study was carried out for the redox reaction between N-benzoylleucomethylene blue (BLMB) and hexacyanoferrate (3) ion in polyoxyethylenedodecyl ether (Brij35)-sodium dodecyl sulfate (SDS) mixed micellar solutions. No reaction proceeded in the solution containing only Brij 35 micelles.The reaction, however,took place when SDS was added to the Brij 35 micellar solutions, and the rate was increased with increasing the concentration of SDS.The redox potentials of hexacyanoferrate (3) ion and BLMB were measured in the mixed micellar solutions by means of cyclic voltammetry. The oxidation potential of BLMB was suddenly decreased by the addition of SDS to the Brij 35 micellar solutions,while the reduction potential of hexacyanoferrate (3) ion remains almost constant irrespective of the concentration of SDS.