COLL 359 |
| Subra Muralidharan1, Jun Yang1, and Hengli Ma2. (1) Department of Chemistry, Western Michigan University, 3120 Wood Hall, Kalamazoo, MI 49008, (2) Chemistry, Western Michigan University, 3120 Wood Hall, Kalamazoo, MI 49008 |
| Our research program in metal ion recognition is focused on the self-assemblies of amphiphilic molecules at the solid-liquid interface capable of complexing metal ions. Such structures can be used for the recognition and separation of transition metal and lanthanide metal ions. We have employed anionic and cationic surfactants adsorbed on reverse phase silica along with different chelating ligands and investigated metal ion separation by HPLC and CE methods. We have also synthesized a new family of self-assembling acylpyrazolone and acylisoxazolone ligands and characterized their adsorption behavior on reverse phase silica. Their metal ion recognition efficacies have been studied by HPLC and CE. Our studies clearly indicate that the metal ion separations are mediated by the self-assemblies of the amphiphilic systems at the solid-liquid interface. These self-assemblies have been characterized by fluorescence, scanning electron, and transmission electron microscopies. The metal ion recognition mechanisms and the nature of the self-assemblies will be discussed. |
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Adsorption of Macromolecules at Liquid-Solid Interfaces
Division of Colloid and Surface Chemistry |