Interaction of Metal Ion-Coordinated Dipeptide Complex and Ninhydrin in the Alkanediyl-α,ω-bis-Type Gemini Surfactant System

In the current study, interaction of a metal ion-coordinated dipeptide complex and ninhydrin was examined in the alkanediyl-alpha,omega-bis-type gemini surfactant system. This work was performed as a function of reactants (ninhydrin and metal-dipeptide complex), surfactants, temperature, and pH. Different techniques including UV-vis spectrophotometry were used to carry out the experiments. The k(psi)-values were evaluated in the presence of alkanediyl-alpha,omega-bis-type gemini surfactants. A first-order path in the metal-dipeptide complex and a fractional-order path in ninhydrin were noticed. To illustrate the quantitative analysis of k(psi)-[gemini] profiles, a pseudophase model of micelles was employed. Thermodynamic parameters were also evaluated and explained. By the observed outcomes, a probable mechanism was suggested and discussed in detail.