Open AccessDNA-Enabled Self-Assembly of Plasmonic Nanoclusters
Author(s) -
Jonathan A. Fan,
Yu He,
Kui Bao,
Chihhui Wu,
Jiming Bao,
Nicholas B. Schade,
Vinothan Manoharan,
Gennady Shvets,
Peter Nordlander,
David R. Liu,
Federico Capasso
Publication year - 2011
Publication title -
nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.853
H-Index - 488
eISSN - 1530-6992
pISSN - 1530-6984
DOI - 10.1021/nl203194m
Subject(s) - plasmon , nanoclusters , nanotechnology , nanoparticle , materials science , self assembly , nanostructure , dna nanotechnology , dna , dna origami , plasmonic nanoparticles , particle (ecology) , chemistry , optoelectronics , biochemistry , oceanography , geology
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.
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