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Gold Nanoelectrodes of Varied Size: Transition to Molecule-Like Charging
Abstract
A transition from metal-like double-layer capacitive charging to redox-like charging was observed in electrochemical ensemble Coulomb staircase experiments on solutions of gold nanoparticles of varied core size. The monodisperse gold nanoparticles are stabilized by short-chain alkanethiolate monolayers and have 8 to 38 kilodaltons core mass (1.1 to 1.9 nanometers in diameter). Larger cores display Coulomb staircase responses consistent with double-layer charging of metal-electrolyte interfaces, whereas smaller core nanoparticles exhibit redox chemical character, including a large central gap. The change in behavior is consistent with new near-infrared spectroscopic data showing an emerging gap between the highest occupied and lowest unoccupied orbitals of 0.4 to 0.9 electron volt.
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Citations
Cited by
Photophysical, Photochemical and Photocatalytic Aspects of Metal Nanoparticles
Kamat, P. V. (2002) · The Journal of Physical Chemistry B · doi:10.1021/jp0209289 · Cited by 1,924
Negishi, Y., Nobusada, K., & Tsukuda, T. (2005) · Journal of the American Chemical Society · doi:10.1021/ja042218h · Cited by 1,646
Sub-nanometre sized metal clusters: from synthetic challenges to the unique property discoveries
Lu, Y., & Chen, W. (2012) · Chemical Society Reviews · doi:10.1039/c2cs15325d · Cited by 1,152
State of the art in gold nanoparticle synthesis
Zhao, P., Li, N., & Astruc, D. (2013) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2012.09.002 · Cited by 964
Subramanian, V., Wolf, E., & Kamat, P. V. (2001) · The Journal of Physical Chemistry B · doi:10.1021/jp011118k · Cited by 916
Metadata
- Authors
- Chen, S., Ingram, R. S., Hostetler, M. J., Pietron, J. J., Murray, R. W., Schaaff, T. G., Khoury, J. T., Alvarez, M. M., & Whetten, R. L.
- Venue
- Science
- Published
- 1998-06-26
- Volume
- 280
- Issue
- 5372
- Pages
- 2098-2101
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1975320379
- Cited by
- 1,026
- References
- 0
- FWCI
- 21.15
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, S., Ingram, R. S., Hostetler, M. J., Pietron, J. J., Murray, R. W., Schaaff, T. G., Khoury, J. T., Alvarez, M. M., & Whetten, R. L. (1998). Gold Nanoelectrodes of Varied Size: Transition to Molecule-Like Charging. Science. https://doi.org/10.1126/science.280.5372.2098
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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