Plasmonic Imaging of Brownian Motion of Single DNA Molecules Spontaneously Binding to Ag Nanoparticles

被引：16

作者：

Hirano, Ken ^{[1
,2
]}

Ishido, Tomomi ^{[1
]}

Yamamoto, Yuko S. ^{[1
]}

Murase, Norio ^{[1
]}

Ichikawa, Masatoshi ^{[3
]}

Yoshikawa, Kenichi ^{[3
,4
]}

Baba, Yoshinobu ^{[1
,2
,5
]}

Itoh, Tamitake ^{[1
,2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Hlth Res Inst, Takamatsu, Kagawa 7610395, Japan

[2] Nagoya Univ, FIRST Res Ctr Innovat Nanobiodevices, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[3] Kyoto Univ, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan

[4] Doshisha Univ, Fac Life & Med Sci, Kyoto 6100394, Japan

[5] Nagoya Univ, Grad Sch Engn, Dept Appl Chem, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

NANO LETTERS | 2013年 / 13卷 / 05期

基金：

日本学术振兴会;

关键词：

Silver nanoparticle; plasmon resonance; single DNA molecule; DNA labeling; video-rate imaging nanoparticle tracking; SURFACE-ENHANCED RAMAN; QUANTUM DOTS; SPECTROSCOPY; NANOCRYSTALS; COMPACTION; SILVER; METAL;

D O I：

10.1021/nl304247n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We find the spontaneous binding of single DNA molecules to uncoated silver nanoparticles (AgNPs) in aqueous solution with Mn2+ (3 mM). From dark-field optical microscopic imaging of AgNPs bound to DNA molecules, we demonstrate analysis of the Brownian motion of single DNA molecules via plasmon resonance elastic light scattering. Our results provide that the plasmonic imaging technique is free from photobleaching and blinking and thus is useful in long-time observations of single-molecule DNA dynamics.

引用

页码：1877 / 1882

页数：6

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