The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Poly(ethylene glycol) Ligands for High-Resolution Nanoparticle Mass Spectrometry
Abstract
Measurements of the core and ligand monolayer compositions of small gold nanoparticles (NPs) using electrospray ionization (ESI) mass spectrometry were performed by incorporating ionization tags, methoxy penta(ethylene glycol) thiolate ligands (-S-PEG), into the ligand monolayers via ligand exchange. During ESI, alkali metal ions (M + ) coordinate to the -S-PEG ligands and give the NPs positive charge. Atomically precise, high-resolution measurements show unequivocally that the NP composition is Au 25 (ligand) 18 . The predominant ions, M 4 Au 25 (ligand) 18 3+ and M 5 Au 25 (ligand) 18 4+, have 1− charge on the core. Because ligand exchange is a statistical process, there is a distribution of mixed-monolayer exchange products, which is reflected in the mass spectra.
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Cites
Smoothing and Differentiation of Data by Simplified Least Squares Procedures.
Savitzky, A., & Golay, M. J. E. (1964) · Analytical Chemistry · doi:10.1021/ac60214a047 · Cited by 21,904
Electrospray Ionization for Mass Spectrometry of Large Biomolecules
Fenn, J. B., Mann, M., Meng, C. K., Wong, S. F., & Whitehouse, C. M. (1989) · Science · doi:10.1126/science.2675315 · Cited by 7,634
Cited by
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Saha, K., Agasti, S. S., Kim, C., Li, X., & Rotello, V. M. (2012) · Chemical Reviews · doi:10.1021/cr2001178 · Cited by 4,620
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
Oxygen Electroreduction Catalyzed by Gold Nanoclusters: Strong Core Size Effects
Chen, W., & Chen, S. (2009) · Angewandte Chemie International Edition · doi:10.1002/anie.200901185 · Cited by 527
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
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Metadata
- Authors
- Tracy, J. B., Kalyuzhny, G., Crowe, M. C., Balasubramanian, R., Choi, J.-P., & Murray, R. W.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-05-01
- Volume
- 129
- Issue
- 21
- Pages
- 6706-6707
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2033514399
- Cited by
- 173
- References
- 2
- FWCI
- 11.15
- Type
- journal article
- Language
- en
- Open access
- closed
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