Fluorescent Lifetime Quenching near d = 1.5 nm Gold Nanoparticles: Probing NSET Validity
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- 作者：T. L. Jennings ; M. P. Singh ; and G. F. Strouse
- 刊名：Journal of the American Chemical Society
- 出版年：2006
- 出版时间：April 26, 2006
- 年：2006
- 卷：128
- 期：16
- 页码：5462 - 5467
- 全文大小：230K
- 年卷期：v.128,no.16(April 26, 2006)
- ISSN：1520-5126
文摘
The fluorescence behavior of molecular dyes at discrete distances from 1.5 nm diameter goldnanoparticles as a function of distance and energy is investigated. Photoluminescence and luminescencelifetime measurements both demonstrate quenching behavior consistent with 1/d4 separation distance fromdye to the surface of the nanoparticle. In agreement with the model of Persson and Lang, all experimentaldata show that energy transfer to the metal surface is the dominant quenching mechanism, and the radiativerate is unchanged throughout the experiment.