| 光谱学与光谱分析 |
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| Preparation and Characterization of Morin-ModifiedSelf-Assembled Multilayer Films of Gold Nanoparticles |
| HE Fei, SUN Xiang-ying*, LIU Bin |
| College of Materials Science and Engineering, Huaqiao University, Quanzhou 362021, China |
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Abstract Quartz substrate was modified with self-assembled monolayer of γ-aminopropyl-triethylsilane by aqueous phase silanization, giving an homogenous surface terminated with amino groups. Colloidal gold nanoparticles were further assembled on this functionalized monolayer substrate, forming a gold nanoparticles/APES/quartz nanocomposite structure. Flourescent reagent morin was assembled onto the self-assembled multilayer films of gold nanoparticles via DL-cystenine (Cys) intermediate. The morin-modified self-assembled multilayer films of gold nanoparticles could detect triphenyltin fluorimetrically with high sensitivity, and the detection limit was as low as 1.297×10-8mol·L-1. The effects of various factors such as concentration of solution, pH, and assembling time were investigated. The response mechanism behind caused the enhancement of relative fluorescence intensity was also discussed.
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Received: 2006-07-08
Accepted: 2006-09-28
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Corresponding Authors:
SUN Xiang-ying
E-mail: liumy@hqu.edu.cn
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| Cite this article: |
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HE Fei,SUN Xiang-ying,LIU Bin. Preparation and Characterization of Morin-ModifiedSelf-Assembled Multilayer Films of Gold Nanoparticles[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 2102-2106.
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https://www.gpxygpfx.com/EN/Y2007/V27/I10/2102 |
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