Optical and Topological Characterization of Gold Nanoparticle Dimers Linked by a Single DNA Double Strand

被引：106

作者：

Busson, Mickael P. ^{[1
]}

Rolly, Brice ^{[2
]}

Stout, Brian ^{[2
]}

Bonod, Nicolas ^{[2
]}

Larquet, Eric ^{[3
]}

Polman, Albert ^{[4
]}

Bidault, Sebastien ^{[1
]}

机构：

[1] CNRS, INSERM U979, Inst Langevin, ESPCI Paris Tech,UMR 7587, F-75005 Paris, France

[2] Domaine Univ St Jerome, Aix Marseille Univ, Inst Fresnel,CNRS UMR 6133, Ecole Cent Marseille, F-13397 Marseille, France

[3] Univ Paris 06, Dept Biol Struct, Inst Mineral & Phys Milieux Condenses, CNRS UMR 7590, F-75005 Paris, France

[4] Ctr Nanophoton, FOM Inst AMOLF, NL-1098 XG Amsterdam, Netherlands

来源：

NANO LETTERS | 2011年 / 11卷 / 11期

关键词：

Nanoparticle dimers; plasmon coupling; DNA self-assembly; cryo-electron microscopy; darkfield microscopy; Mie theory; COLORIMETRIC DETECTION; ELECTRON-MICROSCOPY; PLASMON RULERS; GROUPINGS; DISTANCE; NANOCRYSTALS; CALIBRATION; RESONANCES; SCAFFOLDS; SEQUENCES;

D O I：

10.1021/nl2032052

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate that symmetric or asymmetric gold nanoparticle dimers with substantial scattering cross sections and plasmon coupling can be produced with a perfectly controlled chemical environment and a high purity using a single DNA linker as short as 7 nm. A statistical analysis of the optical properties and morphology of single dimers is performed using darkfield and cryo-electron microscopies. These results, correlated to Mie theory calculations, indicate that the particle dimers are stretched in water by electrostatic interactions.

引用

页码：5060 / 5065

页数：6

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