Selective picomolar detection of mercury(II) using optical sensors |
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| Authors: | Díez-Gil César Martínez Rosario Ratera Imma Hirsh Thomas Espinosa Arturo Tárraga Alberto Molina Pedro Wolfbeis Otto S Veciana Jaume |
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| Affiliation: | Departament de Nanociència Molecular i Materials Orgànics, Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas (CSIC), Campus U.A.B., 08193 Bellaterra, Spain. |
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| Abstract: | The rational design of a mercury(II) ligand consisting in a 1-(4'-oxyphenyl)-4(1'-pyrenyl)-2,3-diaza-1,3-butadiene receptor unit, optimizes the sensitivity and reliability of a SPR sensor by the formation of a well packed SAM over the gold surface. SPR analysis allows detecting mercury(II) concentrations in aqueous systems in the picomolar range, meliorating on three orders of magnitude the EU mercury(II) detection limit in drinkable water. |
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