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Issue 14, 2012
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Mixed monolayer protected gold atom–oxide cluster synthesis and characterization

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Abstract

Small atomic gold clusters in solution, Aun, stabilized by cetyl trimethylammonium bromide (CTAB) and cysteine, have been synthesized potentiodynamically in quiescent aqueous solutions. The electrodissolution of gold to gold ions during an anodic scan and subsequent cluster formation during a cathodic scan in underpotential (UPDD) and overpotential dissolution–deposition (OPDD) regions were studied. The experimental potentiodynamic IE profiles and chronoamperometric it transients are fit into reported theoretical models of adsorption and electrocrystallization. The plausible application of clusters/cluster film to cysteine sensing based on fluorescence quenching and square wave stripping voltammetry is demonstrated.

Graphical abstract: Mixed monolayer protected gold atom–oxide cluster synthesis and characterization

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Publication details

The article was received on 25 Feb 2012, accepted on 21 Apr 2012 and first published on 24 Apr 2012


Article type: Paper
DOI: 10.1039/C2NR30446E
Citation: Nanoscale, 2012,4, 4130-4137
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    Mixed monolayer protected gold atom–oxide cluster synthesis and characterization

    S. R. Nambiar, P. K. Aneesh, C. Sukumar and T. P. Rao, Nanoscale, 2012, 4, 4130
    DOI: 10.1039/C2NR30446E

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