DNA-Enabled Self-Assembly of Plasmonic Nanoclusters

被引：138

作者：

Fan, Jonathan A. ^{[1
]}

He, Yu ^{[2
]}

Bao, Kui ^{[3
]}

Wu, Chihhui ^{[4
]}

Bao, Jiming ^{[5
]}

Schade, Nicholas B. ^{[6
]}

Manoharan, Vinothan N. ^{[1
,6
]}

Shvets, Gennady ^{[4
]}

Nordlander, Peter ^{[3
]}

Liu, David R. ^{[2
]}

Capasso, Federico ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Harvard Univ, Howard Hughes Med Inst, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

[3] Rice Univ, Dept Phys, Houston, TX 77005 USA

[4] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[5] Univ Houston, Dept Elect & Comp Engn, Houston, TX 77204 USA

[6] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 11期

关键词：

Plasmonics; DNA; colloidal self-assembly; nanoshell; magnetic dipole; Fano resonance; SILVER NANOPARTICLES; GOLD NANOPARTICLES; NANOSTRUCTURES; CLUSTERS; SURFACE; METAMATERIALS; MOLECULES; RESONANCE; COLLOIDS; SHAPES;

D O I：

10.1021/nl203194m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：4859 / 4864

页数：6

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