DNA-enabled self-assembly of plasmonic nanoclusters.

Abstract

DNA nanotechnology provides a versatile foundation for the chemical assembly of nanostructures. Plasmonic nanoparticle assemblies are of particular interest because they can be tailored to exhibit a broad range of electromagnetic phenomena. In this Letter, we report the assembly of DNA-functionalized nanoparticles into heteropentamer clusters, which consist of a smaller gold sphere surrounded by a ring of four larger spheres. Magnetic and Fano-like resonances are observed in individual clusters. The DNA plays a dual role: it selectively assembles the clusters in solution and functions as an insulating spacer between the conductive nanoparticles. These particle assemblies can be generalized to a new class of DNA-enabled plasmonic heterostructures that comprise various active and passive materials and other forms of DNA scaffolding.

DOI: 10.1021/nl203194m

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Cite this paper

@article{Fan2011DNAenabledSO, title={DNA-enabled self-assembly of plasmonic nanoclusters.}, author={Jonathan A Fan and Yu He and Kui Bao and Chihhui Wu and Jiming Bao and Nicholas B Schade and Vinothan N. Manoharan and Gennady Shvets and Peter J Nordlander and David R Liu and Federico A Capasso}, journal={Nano letters}, year={2011}, volume={11 11}, pages={4859-64} }