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Probing in situ the Nucleation and Growth of Gold Nanoparticles by Small-Angle X-ray Scattering
Abstract
We probe in situ by synchrotron SAXS/WAXS and UV-visible spectroscopy the nucleation and growth of gold nanoparticles. The use of a fast-mixing stopped-flow device enables the assessment of the whole particle formation process with a 200 ms time resolution. The number of particles, their size distribution, and the yield of the reaction is determined in real time through the quantitative analysis of the SAXS data on an absolute scale. Two ligands exhibit drastically different behaviors: when an alkanoic acid is used, a nucleation phase of 1 s is followed by a growth step whose rate is limited by the reaction of the monomers at the interface; on the other hand, when an alkylamine is used, the nucleation rate is increased by an order of magnitude, thus annealing growth by a lack of monomer and yielding R=1 nm particles in 2 s, as compared with R=3.7 nm in 12 s for the acid case.
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Cites
Ultra-large-scale syntheses of monodisperse nanocrystals
Park, J., An, K., Hwang, Y., Park, J.-G., Noh, H.-J., Kim, J.-Y., Park, J.-H., Hwang, N.-M., & Hyeon, T. (2004) · Nature Materials · doi:10.1038/nmat1251 · Cited by 4,076
Cited by
Mechanisms of Nucleation and Growth of Nanoparticles in Solution
Thanh, N. T. K., Maclean, N., & Mahiddine, S. (2014) · Chemical Reviews · doi:10.1021/cr400544s · Cited by 3,399
Seed‐Mediated Growth of Colloidal Metal Nanocrystals
Xia, Y., Gilroy, K. D., Peng, H., & Xia, X. (2017) · Angewandte Chemie International Edition · doi:10.1002/anie.201604731 · Cited by 800
Synthesis and properties of colloidal heteronanocrystals
Donegá, C. D. M. (2011) · Chem. Soc. Rev. · doi:10.1039/c0cs00055h · Cited by 719
Formation Mechanisms of Uniform Nanocrystals via Hot‐Injection and Heat‐Up Methods
Kwon, S. G., & Hyeon, T. (2011) · Small · doi:10.1002/smll.201002022 · Cited by 677
Organic Phase Syntheses of Magnetic Nanoparticles and Their Applications
Wu, L., Mendoza-Garcia, A., Li, Q., & Sun, S. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00687 · Cited by 601
Metadata
- Authors
- Abécassis, B., Testard, F., Spalla, O., & Barboux, P.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-05-26
- Volume
- 7
- Issue
- 6
- Pages
- 1723-1727
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2081221666
- Cited by
- 258
- References
- 1
- FWCI
- 8.06
- Type
- journal article
- Language
- en
- Open access
- closed
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- Abécassis, B., Testard, F., Spalla, O., & Barboux, P. (2007). Probing in situ the Nucleation and Growth of Gold Nanoparticles by Small-Angle X-ray Scattering. Nano Letters. https://doi.org/10.1021/nl0707149
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