COLL 291 |
| Measurement and control of guest molecule distributions in the presence of self-assembling host species are important in many complex fluid solutions and mesostructured solids. Technologically important systems include functionalized inorganic-organic hybrid materials, micelle or vesicle hosts for drug delivery, and proteins that interact with small-molecule agents. In such mixtures, guest-host distributions may be influenced by competing dynamic interactions among numerous and diverse hydrophobic, hydrophilic, and/or surfactant species present. These interactions influence guest-host association, component mobilities, phase behaviors, and macroscopic mixture properties, though are highly system-dependent and challenging to establish. New molecular-level insights on these physicochemical properties and processes are provided by multidimensional and pulsed-field-gradient diffusion NMR methods that are sensitive to the locations, distributions, and/or dynamics of different component species. Recent results will be presented on guest-molecule interactions with self-assembling host species, e.g., block copolymer surfactants, micelles, vesicles, or proteins, in heterogeneous solutions or solids without long-range order. |
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Surfactant Self-Assembly
6:00 PM-8:00 PM, Monday, August 20, 2007 BCEC -- 153B, Oral
Division of Colloid & Surface Chemistry |