Surface-enhanced fluorescence and reverse saturable absorption on silver nanoparticles

被引：23
|
作者：
Lee, IYS [1 ]
Suzuki, H [1 ]
Ito, K [1 ]
Yasuda, Y [1 ]
机构：
[1] Toyama Univ, Dept Chem, Toyama 9308555, Japan
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 50期
关键词：
D O I：
10.1021/jp0471554
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Langmuir isotherm is applied to analyze the laser-induced fluorescence from solutions containing silver nanoparticles and tris(2,2'-bipyridyl)ruthenium(II) chloride. Fluorescence enhancement factors based on the simple adsorption model are found to be 47-90, depending on the nanoparticle concentration. The enhancement is attributed to the laser-induced free-carrier absorption on the silver surfaces, which is a reverse saturable absorption process, at the excitation wavelength of 532 nm.
引用
收藏
页码：19368 / 19372
页数：5
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