Abstract
This study was aimed to investigate the physicochemical behavior, solubilization and interaction of coordination complex [Ni(dmen)2F2].8H2O (NDC) with anionic surfactant sodium stearate (SS). The thermodynamic parameters of solubilization such as standard free energy (ΔGm0), enthalpy (ΔHm0) and entropy (ΔSm0) changes of micellization were evaluated by using conductometric measurements. These parameters revealed that the phenomenon of micellization is entropy driven and spontaneous due to the more negative value of (ΔGm0). The quantitative estimation of partitioning parameters such as partition coefficient (Kx), binding constant (Kb), standard energy of partition (ΔGpartO), and standard binding energy (ΔGbindO) revealed the complex-surfactant interaction. Spectroscopic study indicated the high degree of interaction and solubilization of NDC in SS micellar media.. The partitioning results not only governs the mechanism of solubilization but also gives understanding about the partitioning of NDC across membranes in biological systems.
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