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Seeding of Colloidal Au Nanoparticle Solutions. 2. Improved Control of Particle Size and Shape

Brown, Kenneth R., Walter, Daniel G., Natan, Michael J.·2000·Chemistry of Materials

Abstract

New fields of research in chemistry and physics require improved synthetic techniques for colloidal metal particles. This paper reports a generally applicable technique for synthesizing colloidal Au particles of mean diameters between 20 and 100 nm that exhibit improved monodispersity relative to previously published methods. In this approach (called “seeding”) Au 3+ is reduced on the surface of preformed 12-nm-diameter Au nanoparticles by introduction of boiling sodium citrate, producing particles highly uniform in size and shape. A similar procedure, utilizing the reductant NH 2 OH at room temperature, produces two populations of particles; the larger population is even more spherical than citrate-reduced particles of similar size, while the smaller population is very distinctly rod-shaped.

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Metadata

Authors
Brown, K. R., Walter, D. G., & Natan, M. J.
Venue
Chemistry of Materials
Published
1999-12-29
Volume
12
Issue
2
Pages
306-313
ISSN
  • 0897-4756 (ISSN-L)
  • 1520-5002
OpenAlex
W2009304781
Cited by
944
References
0
FWCI
8.90
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Seeding of Colloidal Au Nanoparticle Solutions. 2. Improved Control of Particle Size and Shape. https://app.cochat.ai/papers/10.1021/cm980065p
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Brown, K. R., Walter, D. G., & Natan, M. J. (2000). Seeding of Colloidal Au Nanoparticle Solutions. 2. Improved Control of Particle Size and Shape. Chemistry of Materials. https://doi.org/10.1021/cm980065p

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.