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Journal of Nanoparticle Research

Erschienen in:

01.10.2012 | Research Paper

Ag-nanoparticle fractionation by low melting point agarose gel electrophoresis

verfasst von: Nekane Guarrotxena, Gary Braun

Erschienen in: Journal of Nanoparticle Research | Ausgabe 10/2012

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Abstract

The separation of surface-enhanced raman scattering (SERS)-active Ag-multi-nanoparticle (NP) assemblies by low melting point agarose gel electrophoresis was accomplished here by controlling surface charge using NP capping agents, and the pore size of agarose gel matrix. Detailed transmission electron microscopy analysis of excised gel fractions showed dimers and small clusters to have the greatest SERS activity and a mobility in between the monomers and large aggregates. This strategy enables one to: (1) stabilize small multispherical Ag clusters against further aggregation during purification; (2) fractionate and recover spherical assemblies by nuclearity; and (3) analyze SERS-enhancements for each fraction to optimize purification conditions.

Vorheriger Artikel Platinum-modified SiO2 with tubular morphology as efficient membrane-type microreactors for mineralization of formic acid

Nächster Artikel Spectroscopic and microscopic investigation of gold nanoparticle nucleation and growth mechanisms using gelatin as a stabilizer

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Titel: Ag-nanoparticle fractionation by low melting point agarose gel electrophoresis
verfasst von: Nekane Guarrotxena
Gary Braun
Publikationsdatum: 01.10.2012
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 10/2012
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-012-1199-4

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