Distance Dependence of Fluorescence Enhancement in Au Nanoparticle@Mesoporous Silica@Europium Complex

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• 作者：Huiqin Li ; Jianmiao Kang ; Jianhui Yang ; Biao Wu
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：August 4, 2016
• 年：2016
• 卷：120
• 期：30
• 页码：16907-16912
• 全文大小：478K
• 年卷期：0
• ISSN：1932-7455

文摘

In this paper, a core–shell structure of Au_nanoparticle@mSiO₂ with controllable thickness of silica was synthesized by a modified one-pot process and then europium complex of PABI-Eu was grafted on the surface of Au_nanoparticle@mSiO₂ nanostructure to successfully construct the resulting Au_nanoparticle@mSiO₂@PABI-Eu nanocomposite. The spectroscopic result revealed that the emission intensity of the Au_nanoparticle@mSiO₂@PABI-Eu nanocomposite is highly dependent on the thickness of silica. The enhancement factor of 4.20 is achieved at 30 nm thickness of silica between Au nanoparticle and PABI-Eu complex.