Synthesis and ion binding properties of a 2-quinoxalinol salen schiff-base ligand

CHED 463

Julian M. Davis, judavis@uiwtx.edu, Jennifer D. Caraway, Zachary A. Juhl, and Angela Roberts. Department of Chemistry, University of the Incarnate Word, 4301 Broadway CPO311, San Antonio, TX 78209
The 2-quinoxalinol salen ligand combines the binding site attributed to salen ligands with the aromatic architecture of a fluorescent quinoxaline structure. A recently developed pathway streamlines the synthesis of these compounds, cumulating in a Schiff-base condensation reaction to yield the final product. Utilizing this technique, our group has synthesized an additional compound in contribution to the current combinatorial library of the Schiff-base 2-quinoxalinol salen ligands and explored some modifications to the methods in the synthetic process. The anion and metal binding properties of this class of compounds were examined through UV-Vis and fluorescence spectroscopy.