Effects of pre-micelles of anionic surfactant SDS on the electron transfer reaction between methylene blue and ascorbic acid

In the pre-micelle cluster anionic SDS monomers bind with the positively charged methylene blue species through electrostatic as well as hydrophobic interactions in a co-operative manner thus making the approach of the ascorbic acid molecule towards methylene blue more difficult. This fact accounts for the inhibition of the reaction rate.165