Synthesis and single-particle optical detection of low-polydispersity plasmonic-superparamagnetic nanoparticles

被引：98

作者：

Lim, JitKang ^{[2
,3
]}

Eggeman, Alexander ^{[1
]}

Lanni, Frederick ^{[4
]}

Tilton, Robert D. ^{[2
,5
]}

Majetich, Sara A. ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[2] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA

[3] Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Penang, Malaysia

[4] Carnegie Mellon Univ, Dept Biol Sci, Pittsburgh, PA 15213 USA

[5] Carnegie Mellon Univ, Dept Biomed Engn, Pittsburgh, PA 15213 USA

来源：

ADVANCED MATERIALS | 2008年 / 20卷 / 09期

关键词：

D O I：

10.1002/adma.200702196

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis, magnetic characterization, and optical properties of nanoparticles with iron oxide cores and gold shells are presented. The nanoparticles are superparamagnetic at room temperature and can be reversibly collected by a permanent magnet. They display a localized surface plasmon resonance peak at 605 nm, and their large scattering cross-section allows them to be individually resolved in darkfield optical microscopy as they undergo Brownian motion in aqueous suspension.

引用

页码：1721 / +

页数：7

共 44 条

[1] Plasmon resonance shifts of Au-coated Au2S nanoshells: Insight into multicomponent nanoparticle growth [J].