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Near Infrared Optical Absorption of Gold Nanoparticle Aggregates
Abstract
The reduction of HAuCl 4 by Na 2 S has been reported to produce gold nanoparticles with an optical absorption in the near-infrared along with its characteristic absorption in the visible. The optical resonances in the visible are due to the gold surface plasma, which are a function of the geometry of the particles. The near-infrared absorption had been attributed to the formation of Au 2 S/Au core/shell structures. In this report we present new electronic absorption, electron microscopy, and X-ray absorption data in several systems to show that the near-infrared absorption does not involve core/shell structures. We further suggest that the near-infrared adsorption is most likely the result of the formation of aggregates of gold nanoparticles. The identification of the origin of the near-infrared resonance is critical in understanding the optical properties of metal nanoparticle systems.
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Cites
Beiträge zur Optik trüber Medien, speziell kolloidaler Metallösungen
Mie, G. (1908) · Annalen der Physik · doi:10.1002/andp.19083300302 · Cited by 11,537
Cited by
Ghosh, S. K., & Pal, T. (2007) · Chemical Reviews · doi:10.1021/cr0680282 · Cited by 2,782
Colloidal Gold and Silver Triangular Nanoprisms
Millstone, J. E., Hurst, S. J., Métraux, G. S., Cutler, J. I., & Mirkin, C. A. (2009) · Small · doi:10.1002/smll.200801480 · Cited by 895
Taylor, R. W., Lee, T.-C., Scherman, O. A., Esteban, R., Aizpurua, J., Huang, F. M., Baumberg, J. J., & Mahajan, S. (2011) · ACS Nano · doi:10.1021/nn200250v · Cited by 355
Synthesis of Gold Nanoparticles Using Multifunctional Peptides
Slocik, J. M., Stone, M. O., & Naik, R. R. (2005) · Small · doi:10.1002/smll.200500172 · Cited by 339
Nanocomposites of Au/Disentangled UHMWPE: A Combined Optical and Structural Study
Drakopoulos, S. X., Tarallo, O., Guan, L., Martin-Fabiani, I., & Ronca, S. (2020) · Molecules · doi:10.3390/molecules25143225 · Cited by 13
Metadata
- Authors
- Norman, T. J., Grant, C. D., Magana, D., Zhang, J. Z., Liu, J., Cao, D., Bridges, F., & Van Buuren, A.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-06-14
- Volume
- 106
- Issue
- 28
- Pages
- 7005-7012
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2293333967
- Cited by
- 259
- References
- 1
- FWCI
- 7.42
- Type
- journal article
- Language
- en
- Open access
- closed
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- Norman, T. J., Grant, C. D., Magana, D., Zhang, J. Z., Liu, J., Cao, D., Bridges, F., & Van Buuren, A. (2002). Near Infrared Optical Absorption of Gold Nanoparticle Aggregates. The Journal of Physical Chemistry B. https://doi.org/10.1021/jp0204197
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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.
