مقاله Effect of anionic biocompatible amino acid surfactant and sodium dodecyl sulfate on the rate of alkaline hydrolysis of tris(2,2'-bipyridine)iron(II) complex: A comparative study : تی پی بین

خلاصه مقاله

Sodium-N-dodecanoylphenylalaninate, an anionic amino acid surfactant (AAS) has been synthesized and characterized by spectroscopy and tensiometry. The kinetics of alkaline hydrolysis of tris(2,2- bipyridine)iron(II) complex has been studied in presence of AAS and SDS in the temperature range of 303–318 K. Both the surfactants have an inhibitory effect on the rate, particularly below the CMC of the surfactants. The inhibitory effect of the surfactants has been accounted for by the association/binding of the surfactant molecule with the substrate. The activation parameters and the binding constants at different temperatures were determined from the temperature effect. The results in terms of different transition points, binding of the substrate-bound surfactant aggregates & free micelles, the standard enthalpy & entropy of activation, binding constants & interaction of both surfactants, and so forth have been explained. The results have been rationalized in terms of an interaction model.

نویسندگان

Arjama Kundu [ Department of Chemistry, Jadavpur University, Kolkata-700 032, India ]

Somnath Dasmandal [ Department of Chemistry, Jadavpur University, Kolkata-700 032, India ]

Tapas Majumdar [ Department of Chemistry, Jadavpur University, Kolkata-700 032, India ]

Ambikesh Mahapatra [ Department of Chemistry, Jadavpur University, Kolkata-700 032, India ]

کلمات کلیدی

N dodecanoylphenylalaninate Amino acid surfactant Sodium dodecyl sulfate

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Colloids and Surfaces A: Physicochemical and Engineering Aspects

Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications ofcolloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.Criteria for publication in Colloids and Surfaces A are novelty, quality and current interest. Manuscripts which only make routine use of or minor extensions to well established methodologies (e.g. fitting adsorption data to a Langmuir or Freundlich isotherm) are no appropriate for the journal.

حوزه های تحت پوشش : Physicochemical , food, energy, minerals processing, pharmaceuticals , environment