Artículos de revistas
Interaction of a-diimine–chromium(III) complexes with non-ionic surfactant Triton X-100
Fecha
2013-03Registro en:
Bazán, Claudia Marcela; Pagliero, Daniela; Suarez, Alejandra Graciela; Arguello, Gerardo; Interaction of a-diimine–chromium(III) complexes with non-ionic surfactant Triton X-100; Elsevier; Journal Of Colloid And Interface Science; 392; 3-2013; 266-273
0021-9797
Autor
Bazán, Claudia Marcela
Pagliero, Daniela
Suarez, Alejandra Graciela
Arguello, Gerardo
Resumen
Using either luminescence intensity or lifetime measurements, we have studied the binding interactions of View the MathML source (NN = α-diimine ligands) with non-ionic solutions of surfactant p -(1,1,3,3-tetramethylbutyl)phenoxypoly(ethylene glycol), Triton X-100 (TX-100). The titration curves consisted of two curved regions with different slopes. This biphasic behavior of lifetime-TX-100 concentration data revealed the presence of premicellar aggregates at low TX-100 concentration and the formation of normal micelles at high surfactant concentration. The results were analyzed with a model that includes binding of View the MathML source (probe) to small premicellar aggregates and to micelles. There is a good correlation between the hydrophobicity of the ligands of Cr(III) complex and the strength of the binding of the complexes to the micelles. A comparison with the binding of View the MathML source to sodium dodecylsulfate (SDS) is discussed.