dc.contributor.authorWang, Yusong
dc.contributor.authorAili, Daniel
dc.contributor.authorSelegård, Robert
dc.contributor.authorTay, Yee Yan
dc.contributor.authorBaltzer, Lars
dc.contributor.authorZhang, Hua
dc.contributor.authorBo, Liedberg
dc.identifier.citationWang, Y., Aili, D., Selegård, R., Tay, Y. Y., Baltzer, L., Zhang, H., et al. (2012). Specific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assembly. Journal of materials chemistry, 22(38), 20368-20373.en_US
dc.description.abstractAnisotropic nanoparticles stabilized by cetyltrimethylammonium bromide (CTAB) are notoriously difficult to homogenously functionalize using conventional gold–thiol chemistry. Using surface assisted laser desorption time of flight mass spectroscopy and scanning transmission electron microscopy-energy dispersive X-ray spectroscopy, we demonstrate that silver species adsorbed on the particle surface prevent effective surface functionalization. When covered by a thin gold film, particle functionalization was drastically improved. A thiol-containing polypeptide was immobilized on arrowhead gold nanorods (NRs) and was subsequently able to selectively heteroassociate with a complementary polypeptide resulting in a folding-mediated bridging aggregation of the NRs. Despite using arrowhead NRs with a pronounced difference in surface arrangement on the {111} facets on the arrowheads compared to the {100} facets at the particle sides, the polypeptides were efficiently and homogeneously immobilized on the particles after gold film overgrowth.en_US
dc.relation.ispartofseriesJournal of materials chemistryen_US
dc.rights© 2012 The Royal Society of Chemistry.en_US
dc.titleSpecific functionalization of CTAB stabilized anisotropic gold nanoparticles with polypeptides for folding-mediated self-assemblyen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Materials Science and Engineeringen_US

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