ORGN 614 |
| The development of new molecular systems for anion recognition is important for the detection of select anions in environmental and biological samples. Previous efforts in our laboratory have resulted in a series of diethylenetriaminepentaacetic acid (DTPA)-based Eu(III)-containing macrocycles with two thiourea moieties as anion binding sites. These macrocyclic complexes display a luminescent response to various anions in DMSO solution - particularly fluoride and carboxylates. Studying the nature of this behavior has been hampered by poor solubilities in the solvents required for several spectroscopic analyses. Synthetic organic models have been produced to gain insight into the anion binding characterisitics of the thiourea functionality in the Eu(III) system. The synthesis of the organic models and Eu(III) complexes, along with luminescence, absorption and 1H-NMR spectra from anion titration studies will be presented. |
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Molecular Recognition and Self-Assembly
1:00 PM-5:00 PM, Wednesday, March 28, 2007 McCormick Place Lakeside -- Room E352, Level 3, Oral
Division of Organic Chemistry |