Size and shape separation of gold nanoparticles with preparative gel electrophoresis |
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Authors: | Xu Xiaoyou Caswell K Kenneth Tucker Elizabeth Kabisatpathy Saswat Brodhacker K Lisa Scrivens Walter A |
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Institution: | Department of Chemistry and Biochemistry and Nanocenter, University of South Carolina, 631 Sumter Street, Columbia, SC 29208, USA. |
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Abstract: | We employed agarose gel preparative electrophoresis to separate gold nanoparticles based on size, shape, and charge. The separating technique was first demonstrated by size separation of 5 nm, 15 nm, and 20 nm spherical gold nanoclusters; and further evidenced through the purification of crude 15 +/- 2.7 nm nanoclusters to nanoclusters that were 15 +/- 0.4 nm. The ability to separate gold nanoparticles by shape was also shown by the purification of a mixture of gold spheres, plates, and long rods. |
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