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Self-Arrangement Among Charge-Stabilized Gold Nanoparticles on a Dithiothreitol Reactivated Octanedithiol Monolayer
University of Gothenburg.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Sensor Science and Molecular Physics .
University of Gothenburg.
University of Gothenburg.
2008 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 8, no 11, 3989-3992 p.Article in journal (Refereed) Published
Abstract [en]

Gold surfaces and structures modified with octanedithiol were reacted with dithiothreitol prior to immersion in buffered solutions of charge stabilized gold nanoparticles. The procedure gives a dithiol layer with adequate properties for a homogeneous octanedithiol monolayer and uniform and reproducible gold nanoparticle binding. The distance between the adsorbing particles is controlled by the particle electrostatic interactions and can be carefully tuned by variation of ionic strength. To some extent, long-range ordering occurs among the adsorbed particles. This behavior is facilitated by the particles small size compared to the Debye screening but also by the homogeneity of the surface modification. The simple character of the system makes it attractive for fabrication of controlled nanoparticle arrays where further chemical and biological modifications are required.

Place, publisher, year, edition, pages
2008. Vol. 8, no 11, 3989-3992 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-16129DOI: 10.1021/nl802543gOAI: oai:DiVA.org:liu-16129DiVA: diva2:133212
Available from: 2009-01-08 Created: 2009-01-07 Last updated: 2017-12-14

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Björefors, Fredrik

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