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

页码：19368 / 19372

页数：5

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