Mesoscopic structures spherical

Reactions that occur between components in the bulk solution and vesicle-bound components, i.e., reactions occurring across the membrane interface, can be treated mathematically as if they were bimolecular reactions in homogeneous solution. However, kinetic analyses of reactions on the surface of mesoscopic structures are complicated by the finiteness of the reaction space, which may obviate the use of ordinary equations of chemical kinetics that treat the reaction environment as an infinite surface populated with constant average densities of reactant molecules. As was noted above, the kinetics of electron-transfer reactions on the surface of spherical micelles and vesicles is expressed by a sum of exponentials that can be approximated by a single exponential function only at relatively long times [79a, 81], At short times, the kinetics of the oxidative quenching of excited molecules on these surfaces are approximated by the equation [102]... 

Surfactants are popularly known for their detergency properties. Their appeal is based on the observation that while they are dispersible in water, they can remove efficiently oily contaminants from various surfaces, such as apparel, building materials, and appliances. This was found to be due to the capability of surfactants to form mesoscopic structures called micelles, in which surfactant molecules self-organized into spherical, cylindrical, and even lamellar domains. In these domains surfactant molecules arrange themselves like infantry soldiers of a Roman legion in defensive positions, wherein the hydrophilic heads of each molecule are facing the wide... 

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