Resonance light scattering properties of Eu3+ in gold colloid

被引：7

作者：

Jian, Z ^{[1
]}

Xiang, Z

机构：

[1] Xian Jiaotong Univ, Sch Sci, Xian 710049, Peoples R China

[2] Peking Univ, Dept Pathol, Beijing 100871, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2005年 / 61卷 / 13-14期

关键词：

resonance light scattering; gold colloid; europium ions; surface plasmon resonance; local field;

D O I：

10.1016/j.saa.2004.11.018

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Gold colloidal containing rare-earth ions Eu3+ were prepared at room temperature. Fluorescence spectra and resonance light scattering (RLS) spectra of Eu3+ ions and gold colloid containing EU3+ were measured. For solution containing Eu3+, RLS features show two peaks at the edges of the visible light wavelength region. The short wavelength peak takes place at about 400 nm and the longer wavelength peak is the corresponding 1/2 fraction frequency RLS peak, which takes place at about 780 nm. When gold colloids were added to the solution containing Eu3+, both these two RLS peaks were enhanced. We believe that the energies, which are absorbed by the surface plasmon resonance in the gold nanoparticles, are efficiently transferred into the Eu3+ ions to cause the increased scattering. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：3002 / 3005

页数：4

共 25 条

[21]

Yu YY, 1997, J PHYS CHEM B, V101, P6661, DOI 10.1021/jp971656q

[22]

Zhu J, 2004, PHYS LETT A, V323, P455, DOI [10.1016/j.physleta.2004.02.038, 10.1016/j.physelta.2004.02.038]

[23]

Zhu J, 2004, CHINESE PHYS LETT, V21, P559, DOI 10.1088/0256-307X/21/3/040

[24]

Zhu J, 2003, PLASMA SCI TECHNOL, V5, P1835, DOI 10.1088/1009-0630/5/3/013

[25] Fluorescence spectra characters of silver-coated gold colloidal nanoshells [J].

Zhu, J ;

Wang, YC ;

Lu, YM .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2004, 232 (2-3) :155-161

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