Journal
LANGMUIR
Volume 26, Issue 12, Pages 10165-10170Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la100288s
Keywords
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Funding
- Spanish Ministry of Science and Innovation [MAT-2008-128 03079NAN, CTQ2007-63913/BQU, CTQ2007-61704/BQ]
- Generalitat de Catalunya [FI 2009]
- ICREA Funding Source: Custom
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A novel way to synthesize gold nanoparticles based on the use of N-alkylaminopyrazole is shown. This ligand has a triple functionality: induces AuNPs formation, stabilizes the formed nanoparticles, and even remains available for an external coordination with heavy metal ions. The availability of N-alkylaminopyrazole ligands onto the AuNPs surface is studied using UV-vis and NMR techniques. The mechanism of formation of AuNPs along with the synthesis optimization and characterization are studied using voltammetry and UV-vis, and the results are discussed in detail. The application of N-alkylaminopyrazole-derived gold nanoparticles in the heavy metal ions sensing is also tested showing a high sensitivity for mercury detection at low concentration level. The functionalization of metal nanoparticles with these receptors followed by heavy metal ions detection represents a simple mix and detect approach with interest for several other sensing applications.
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