Journal
LANGMUIR
Volume 25, Issue 10, Pages 5840-5846Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la9005967
Keywords
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Funding
- Natural Science and Engineering Research Council of Canada
- Canada Foundation for Innovation
- Ontario ORF-RI
- Research Corporation (Cottrell Award)
- Wilfrid Laurier University
- STEP
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A novel approach of cyclic reduction in oxidative conditions has been developed to prepare a single dominant species of chiral thiol-stabilized silver nanoclusters (AgNCs). Such AgNCs, which are stable in solution for up to a few days, have been obtained for the First time. The generality of the established procedure is proven by using several enantiomeric water-soluble thiols, including glutathione, as protective ligands. The prepared AgNCs featured prominent optical properties including a single pattern of UV-vis absorption with well-resolved peaks. The chirality of the clusters has been investigated by circular dichroism (CD) spectroscopy. CD spectra displayed strong characteristic signatures in the visible range. Tentative identification of the cluster composition is discussed.
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