COLL 196 |
| Thomas Joncheray1, Pierre Audebert2, Evan Schwartz1, A. Jovanovic1, Jorge L. Chavez1, R. Pansu3, and R. S. Duran1. (1) Butler Polymer Laboratory, Department of Chemistry, University of Florida, Gainesville, FL 36211, (2) PPSM, ENS-Cachan, 61 avenue du Pt Wilson, Cachan, 94235, France, (3) Laboratoire de Photophysique et Photochimie Macromolécualire et Supramoléculaire, CNRS UMR 8531, Ecole Normale Supérieure de Cachan, 61 avenue du président Wilson, 94235 CACHAN Cedex, France |
| Oil-Filled Silica Nanocapsules consisting of a hydrophobic liquid core and of a silicate shell have been shown to efficiently extract hydrophobic compounds from aqueous media, including drugs at overdose concentrations from blood. With a view towards quantifying the selectivity of these systems, a series of electrochemical and spectroscopic measurements were performed. Uptake and kinetics experiments were carried out by using solutions of lipophilic electroactive molecules of different sizes for electrochemical measurements. Other solutions with fluorescence properties were used for spectrophotometry measurements. In this work we report the partition coefficients of the lipophilic compounds studied and the kinetics of their uptake by the Oil-Filled Silica Nanocapsules with different oil core sizes and shell thicknesses. |
|
Posters: Fundamental Research in Surface and Colloid Chemistry
6:00 PM-8:00 PM, Monday, March 29, 2004 Disneyland -- North Exhibit Hall, Poster
Division of Colloid and Surface Chemistry |