Preparation of imprinted silica gel surfaces through reversible covalent attachment of template

ORGN 695

Ryan M. Jorgensen, jorgensr@cwu.edu, Julie A. McNeal, Debra R. Wilkerson, and JoAnn P. Deluca. Department of Chemistry, Central Washington University, 400 E. University Way, Ellensburg, WA 98926
Covalent attachment of a template via a phosphonic acid group was the first step in the preparation of imprinted silica gel surfaces. Organotrialkoxysilanes with complementary binding groups were then attached as shown below, followed by template removal by treatment with aqueous HCl. Model template and binding molecule attachment to the surface and subsequent removal of the template were confirmed by infrared spectroscopy. Binding isotherms were generated for template-related molecules.