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Surface-enhanced Raman scattering from analytes adsorbed on gold nanoparticles inside polymer beads
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
2004 (English)In: Journal of Raman Spectroscopy, Vol. 35, 826-834 p.Article in journal (Refereed) Published
Abstract [en]

Porous polymer beads with a large inner area were used as a stabilizing matrix for SERS-active gold particles. A commercially available ion exchanger (SOURCETM) was used together with HAuCl4. Absorbance measurements and an x-ray diffraction study confirmed that nanocrystalline gold was obtained in the polymer beads. Transmission electron microscope measurements were performed and showed that larger nanoparticles, 20-100 nm, were obtained on the surface, whereas in the interior smaller particles, approximately 2-10 nm, could be found. Three analytes, mercaptoethanesulfonate, mercaptopropionic acid and thiocyanate, were adsorbed on the gold particles inside the polymer beads. From all analytes enhanced Raman spectra could be obtained. The distribution of analytes adsorbed on gold nanoparticles was investigated by confocal Raman spectroscopy. SERS spectra from the analytes could be observed throughout the polymer bead, indicating a fairly uniform distribution of analytes adsorbed on gold nanoparticles.

Place, publisher, year, edition, pages
2004. Vol. 35, 826-834 p.
Keyword [en]
SERS, gold nanoparticles, polymer beads
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-67862DOI: doi:10.1002/jrs.1206OAI: oai:DiVA.org:uu-67862DiVA: diva2:95773
Available from: 2007-04-25 Created: 2007-04-25 Last updated: 2011-01-12

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Lu, JunLindgren, Jan

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