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Diffusion-Controlled Reactions in Micellar Systems

Published online by Cambridge University Press:  15 February 2011

Masanori Tachiya
Affiliation:
National Institute of Materials and Chemical Research, Department of Physical Chemistry Tsukuba, Ibaraki 305, JapanAlso affiliated with the University of Tsukuba, Department of Chemistry
Alexander V. Barzykin
Affiliation:
National Institute of Materials and Chemical Research, Department of Physical Chemistry Tsukuba, Ibaraki 305, JapanOn leave from the Institute of Chemical Physics at Chemogolovka, Russia
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Abstract

Reaction kinetics in micellar solutions are studied theoretically with an emphasis on diffusioncontrolled luminescence quenching. Different spatial arrangements of reactants within individual micelles are analyzed and a general method for treating diffusion-controlled reactions in a finite volume employing an effective potential approximation is developed. Several models are considered for the exchange of reactants between micelles including migration mediated by the bulk phase and successive multiparticle hopping through transient channels connecting micelles during their sticky collisions. These results are combined in a general stochastic theory of reaction kinetics in micellar solutions with exchange. The theory is further extended to reactions in clusters of micelles using a continuous time random walk approach. Once the principal features of micellar kinetics are understood, one can extract important structural and dynamic information on the aggregates and their guest molecules by analyzing suitably designed experiments.

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Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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