Magnetic core/shell Fe3O4/Au and Fe3O4/Au/Ag nanoparticles with tunable plasmonic properties

被引：808

作者：

Xu, Zhichuan ^{[1
]}

Hou, Yanglong ^{[1
]}

Sun, Shouheng ^{[1
]}

机构：

[1] Brown Univ, Dept Chem, Providence, RI 02912 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 28期

关键词：

D O I：

10.1021/ja073057v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Core/shell structured Fe3O4/Au and Fe3O4/Au/Ag nanoparticles are synthesized by depositing Au and Ag on the Fe3O4 nanoparticle surface in aqueous solution at room temperature. The control on shell thickness allows the tuning of plasmonic properties of the core/shell structure to be either red-shifted (to 560 nm) or blue-shifted (to 501 nm). Such magneto-optical nanoparticles should have great potentials for nanoparticle-based diagnostic and therapeutic applications.

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页码：8698 / +

页数：3

相关论文

共 27 条

[11] Synthesis and optical characterization of Au/Ag core/shell nanorods [J].

Liu, MZ ;

Guyot-Sionnest, P .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (19) :5882-5888

[12] Synthesis of Fe oxide core/Au shell nanoparticles by iterative hydroxylamine seeding [J].

Lyon, JL ;

Fleming, DA ;

Stone, MB ;

Schiffer, P ;

Williams, ME .

NANO LETTERS, 2004, 4 (04) :719-723

[13] Magnetization directions of individual nanoparticles [J].

Majetich, SA ;

Jin, Y .

SCIENCE, 1999, 284 (5413) :470-473

[14] Magnetite nanoparticles with tunable gold or silver shell [J].

Mandal, M ;

Kundu, S ;

Ghosh, SK ;

Panigrahi, S ;

Sau, TK ;

Yusuf, SM ;

Pal, T .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 286 (01) :187-194

[15] Superparamagnetism of magnetite nanoparticles: Dependence on surface modification [J].

Mikhaylova, M ;

Kim, DK ;

Bobrysheva, N ;

Osmolowsky, M ;

Semenov, V ;

Tsakalakos, T ;

Muhammed, M .

LANGMUIR, 2004, 20 (06) :2472-2477

[16] Monodisperse 3d transition-metal (Co, Ni, Fe) nanoparticles and their assembly into nanoparticle superlattices [J].

Murray, CB ;

Sun, SH ;

Doyle, H ;

Betley, T .

MRS BULLETIN, 2001, 26 (12) :985-991

[17]

Nikoobakht B, 2003, CHEM MATER, V15, P1957, DOI 10.1021/cm0207321

[18] Ultra-large-scale syntheses of monodisperse nanocrystals [J].

Park, J ;

An, KJ ;

Hwang, YS ;

Park, JG ;

Noh, HJ ;

Kim, JY ;

Park, JH ;

Hwang, NM ;

Hyeon, T .

NATURE MATERIALS, 2004, 3 (12) :891-895

[19] FeCo/graphitic-shell nanocrystals as advanced magnetic-resonance-imaging and near-infrared agents [J].

Seo, Won Seok ;

Lee, Jin Hyung ;

Sun, Xiaoming ;

Suzuki, Yoriyasu ;

Mann, David ;

Liu, Zhuang ;

Terashima, Masahiro ;

Yang, Philip C. ;

McConnell, Michael V. ;

Nishimura, Dwight G. ;

Dai, Hongjie .

NATURE MATERIALS, 2006, 5 (12) :971-976

[20] Magnetic nanotubes for magnetic-field-assisted bioseparation, biointeraction, and drug delivery [J].

Son, SJ ;

Reichel, J ;

He, B ;

Schuchman, M ;

Lee, SB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (20) :7316-7317