Journal
INORGANIC CHEMISTRY
Volume 52, Issue 16, Pages 9166-9168Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic400760v
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Funding
- Bowling Green State University Faculty Research Fund
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The metal-binding properties of rationally designed, synthetic proteins were used to prepare a series of emissive silver nanoclusters having predictable sizes and emission energies. Metal-binding a-helical coiled coils were designed to exist as peptide trimers, tetramers, and hexamers and found to uniquely bind 6, 8, and 12 Ag+ ions, respectively. Subsequent treatment with a chemical reducing agent produced a series of peptide-bound Ag-0 nanoclusters that display a strong visible fluorescence whose emission energies depend on the number of bound metal ions in excellent agreement with theory.
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