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

被引：805
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.
引用
收藏
页码：8698 / +
页数：3
相关论文
共 27 条
  • [1] Growth mechanisms and oxidation resistance of gold-coated iron nanoparticles
    Cho, SJ
    Idrobo, JC
    Olamit, J
    Liu, K
    Browning, ND
    Kauzlarich, SM
    [J]. CHEMISTRY OF MATERIALS, 2005, 17 (12) : 3181 - 3186
  • [2] CONTROLLED NUCLEATION FOR REGULATION OF PARTICLE-SIZE IN MONODISPERSE GOLD SUSPENSIONS
    FRENS, G
    [J]. NATURE-PHYSICAL SCIENCE, 1973, 241 (105): : 20 - 22
  • [3] Dependence of the gold nanorod aspect ratio on the nature of the directing surfactant in aqueous solution
    Gao, JX
    Bender, CM
    Murphy, CJ
    [J]. LANGMUIR, 2003, 19 (21) : 9065 - 9070
  • [4] Heterodimers of nanoparticles: Formation at a liquid-liquid interface and particle-specific surface modification by functional molecules
    Gu, HW
    Yang, ZM
    Gao, JH
    Chang, CK
    Xu, B
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (01) : 34 - 35
  • [5] Facile one-pot synthesis of bifunctional heterodimers of nanoparticles: A conjugate of quantum dot and magnetic nanoparticles
    Gu, HW
    Zheng, RK
    Zhang, XX
    Xu, B
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (18) : 5664 - 5665
  • [6] KREIBIG U, 1990, PHYS CHEM MUNICH, V169, P11
  • [7] Lee JH, 2007, NAT MED, V13, P95, DOI [10.1038/nm1467, 10.20659/jfp.13.1_95]
  • [8] Enhanced magnetooptical response in dumbbell-like Ag-CoFe2O4 nanoparticle pairs
    Li, YQ
    Zhang, G
    Nurmikko, AV
    Sun, SH
    [J]. NANO LETTERS, 2005, 5 (09) : 1689 - 1692
  • [9] Charge dependence of surface plasma resonance on 2 nm octanethiol-protected Au nanoparticles: Evidence of a free-electron system
    Lica, GC
    Zelakiewicz, BS
    Constantinescu, M
    Tong, YY
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (52) : 19896 - 19900
  • [10] Gold-coated iron (Fe@Au) nanoparticles: Synthesis, characterization, and magnetic field-induced self-assembly
    Lin, J
    Zhou, WL
    Kumbhar, A
    Wiemann, J
    Fang, JY
    Carpenter, EE
    O'Connor, CJ
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 2001, 159 (01) : 26 - 31
123