CHED 496 |
| Phosphates and pyrophosphates are nutrients found in ground water that are necessary for bacterial and plant growth, but in excess promote algal blooms. Development of an optical molecular sensor for anions based on fluorescence detection has great appeal due to its increased sensitivity over absorbance methods. Polyaza macrocylic ligands, in their protonated form or by binuclear complexation of copper (II), have been shown to bind neutral compounds and anions. In this project, a polyaza macocycle was synthesized, bis-p-xylylBISDIEN (C24H54N6•6HBr), through a multi-step process and then characterized using 1H-NMR spectroscopy. Two dyes, coumarin-343 and 7-amino-4-methylcoumarin, were characterized by UV-visible and fluorescence spectroscopy for inclusion into the macrocycle. The goal of this research is to determine an efficient method of detecting phosphates and pyrophosphates in ground water using fluorescence detection. Phosphates and pyrophosphates have been shown to displace a fluorescent dye from macrocylic compounds which can fluoresce upon liberation from the macrocycle. |
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Undergraduate Research Poster Session: Organic Chemistry
11:00 AM-1:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |