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Magic-Numbered Aun Clusters Protected by Glutathione Monolayers (n = 18, 21, 25, 28, 32, 39): Isolation and Spectroscopic Characterization
Abstract
Small gold clusters (<1 nm) protected by a glutathione (GSH) monolayer were fractionated into six components by polyacrylamide gel electrophoresis, and their chemical compositions were investigated by electrospray ionization mass spectroscopy. The results demonstrate isolation of a series of magic-numbered gold clusters, Au18(SG)11, Au21(SG)12, Au25+/-1(SG)14+/-1, Au28(SG)16, Au32(SG)18, and Au39(SG)23. Their optical absorption spectra are highly structured with clear absorption onsets, which shift toward higher energies with reduction of the core size. These molecular-like gold clusters exhibit visible photoluminescence. The results reported herein provide helpful guidelines or starting points for further experimental and theoretical studies on structures, stabilities, and optical properties of monolayer-protected gold clusters.
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Cited by
Negishi, Y., Nobusada, K., & Tsukuda, T. (2005) · Journal of the American Chemical Society · doi:10.1021/ja042218h · Cited by 1,646
Self-citationBiju, V. (2014) · Chem. Soc. Rev. · doi:10.1039/c3cs60273g · Cited by 1,186
Horseradish Peroxidase Functionalized Fluorescent Gold Nanoclusters for Hydrogen Peroxide Sensing
Wen, F., Dong, Y., Feng, L., Wang, S., Zhang, S., & Zhang, X. (2011) · Analytical Chemistry · doi:10.1021/ac1031447 · Cited by 549
The Story of a Monodisperse Gold Nanoparticle: Au25L18
Parker, J. F., Fields-Zinna, C. A., & Murray, R. W. (2010) · Accounts of Chemical Research · doi:10.1021/ar100048c · Cited by 503
Tsunoyama, H., Sakurai, H., Ichikuni, N., Negishi, Y., & Tsukuda, T. (2004) · Langmuir · doi:10.1021/la0478189 · Cited by 373
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Metadata
- Authors
- Negishi, Y., Takasugi, Y., Sato, S., Yao, H., Kimura, K., & Tsukuda, T.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-05-06
- Volume
- 126
- Issue
- 21
- Pages
- 6518-6519
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2094899852
- Cited by
- 560
- References
- 0
- FWCI
- 9.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- Negishi, Y., Takasugi, Y., Sato, S., Yao, H., Kimura, K., & Tsukuda, T. (2004). Magic-Numbered Aun Clusters Protected by Glutathione Monolayers (n = 18, 21, 25, 28, 32, 39): Isolation and Spectroscopic Characterization. Journal of the American Chemical Society. https://doi.org/10.1021/ja0483589
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