Size Correlation of Optical and Spectroscopic Properties for Gold Nanoparticles
| Autor: | Derrick Mott, Suprav Mishra, I. Im S. Lim, Chuan-Jian Zhong, Jin Luo, Hye Young Park, Bilal Ahmad Khan, Ravishanker Sujakumar, Peter N. Njoki |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Mie scattering Surface plasmon Analytical chemistry Physics::Optics Nanoparticle Resonance (particle physics) Surfaces Coatings and Films Electronic Optical and Magnetic Materials symbols.namesake General Energy Adsorption Colloidal gold symbols Particle size Physical and Theoretical Chemistry Raman scattering |
| Zdroj: | The Journal of Physical Chemistry C. 111:14664-14669 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp074902z |
| Popis: | While the optical and spectroscopic properties of gold nanoparticles are widely used for chemical, bioanalytical, and biomedical applications, the study of the size correlation with these properties for nanoparticles in solutions is rather limited. This paper describes the results of a systematic study of such a correlation for gold nanoparticles with diameters ranging from 10 to 100 nm in aqueous solutions. The high monodispersity of these nanoparticles permitted a meaningful correlation of the particle size with the surface plasmon (SP) resonance band properties and the surface-enhanced Raman scattering (SERS) spectroscopic properties. This correlation is compared to the results from the simulation based on Mie theory. The close agreement between the experimental and the theoretical results provides insight into the validity of determining the wavelength of the SP resonance band as a measure of the particle size. The size correlation with the SERS intensity from the adsorption of 4-mercaptobenzoic acid ... |
| Databáze: | OpenAIRE |
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