Abstract
The sites of solubilization of some classes of ‘water penetration probes’ in micelles have been studied. These probes, which invariably contain polar or aromatic groups in them, are shown to be inherently interfacially active. The effect of such an activity is seen to be enhanced when the probes are solubilized in systems of large surface area-to-volume ratios such as amphiphile aggregates. NMR results reveal that these ‘water penetration probes’ are located largely in the headgroup region of micelles. They would thus be expected to monitor the polarity and water content of this region rather than those of the micellar interior. Thus, studies using such probes do not necessarily prove the existence of water inside micelles and related assemblies.
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Ganesh, K.N., Mitra, P., Balasubramanian, D. (1984). Critique of Water Penetration Studies in Micelles Using Extrinsic Probes. In: Mittal, K.L., Lindman, B. (eds) Surfactants in Solution. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2280-9_37
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DOI: https://doi.org/10.1007/978-1-4899-2280-9_37
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