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Volumn 280, Issue 5372, 1998, Pages 2098-2101

Gold nanoelectrodes of varied size: Transition to molecule-like charging

Author keywords

[No Author keywords available]

Indexed keywords

GOLD; NANOPARTICLE;

EID: 0032568887     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.280.5372.2098     Document Type: Review
Times cited : (1081)

References (32)
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    • These MPCs were prepared and separated as described previously [T. G. Schaaff et al., J. Phys. Chem. B 101, 7885 (1997)], with discrete core-sizes specified by core-mass (or equivalent core diameter or approximate number of Au atoms) as 8 kD (1.1 nm, ∼38 Au atoms), 14 kD (1.35 nm, ∼75), 22 kD (∼1.5nm, ∼110), 28 kD (1.65 nm, ∼145), and 38 kD (∼1.8 nm, ∼200), with a saturation monolayer coverage of butanethiolate (C4) or hexanethiolate (C6).
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    • note
    • AC impedance measurements, in the same solvent, on a monolayer of C4 28-kD MPCs chemically attached to a Au electrode surface reveal a shallow capacitance minimum at -0.2 V, which we take to be the potential of zero charge. The pzc for the unattached C4 clusters should be the same or very similar.
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    • note
    • CLU or initial charge.
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    • note
    • Supported in part by grants from NSF (R.W.M., R.L.W.) and the U.S. Office of Naval Research (R.W.M.).


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