The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
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
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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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