A Multidimensional Undergraduate Experiment for Easy Solution and Surface Sensing of Mercury(II) and Copper(II) Metal Cations

• Autores: Arturo Espinosa Ferao, Francisco Otón Vidal, Rosario María Martínez Garcinuño, Alberto Tárraga Tomás, Pedro Molina Buendía
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 90, Nº 8, 2013, págs. 1057-1060
• Idioma: inglés
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• Resumen

  • The recently reported bis(1-pyrenyl)azine, easily prepared in a one-step reaction from 1-pyrenecarboxaldehyde and hydrazine hydrate, is used as a receptor for the visual detection of Hg2+ and Cu2+ ions in solution in an undergraduate laboratory experiment. The receptor was also supported on both ?lter paper and a hydrophobic PTFE (polytetra?uoroethylene) membrane, and the resulting probe-coated sheets were successfully used for selective sensing of the same metal ions using optical and ?uorescent spectroscopies. This project provides an opportunity to organic chemistry students to learn about the challenging problem of selectively detecting toxic metal ions, such as Cu2+ and Hg2+, in solution.