Journal
NANOTECHNOLOGY
Volume 19, Issue 28, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/19/28/285601
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The size-controlled synthesis of monodispersed gold nanoparticles (AuNPs) stabilized by polyelectrolyte-functionalized ionic liquid (PFIL) is described. The resulting AuNPs' size, with a narrow distribution, can be tuned by the concentration of HAuCl(4). Such PFIL-stabilized AuNPs (PFIL-AuNPs) showed a high stability in water at room temperature for at least one month; they were also quite stable in solutions of pH 7-13 and high concentration of NaCl. In addition, the PFIL-AuNPs exhibited obvious electrocatalytical activity toward beta-nicotinamide adenine dinucleotide (NADH for short, a cofactor in enzymatic reactions of NAD+/NADH(-)-dependent dehydrogenases) oxidation, suggesting a potential application for bioelectroanalysis.
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