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题名: Influence of Magnetic Fe3O4 Nanoparticles on Fluorescence Quenching of Dye Molecules
作者: Zhang, Qingqing1, 4, 5; Su, Ruigong1; Wang, Jian-Ping2; Zhang, Qi2, 3
关键词: Magnetic Nanoparticles ; Fe3O4 ; Fluorescent Dye ; Acridine Orange ; Fluorescence Quenching
刊名: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
发表日期: 2016-07-01
卷: 16, 期:7, 页:7427-7432
收录类别: SCI
英文摘要: Magneto-fluorescent nanocomposites possessing both fluorescent and magnetic properties represent an attractive platform for biomedicine and nanotechnology. One of the great challenges facing magneto-fluorescent nanocomposites is understanding the influence of magnetic component on the fluorescence quenching of dye molecules. However, there was still lack of in-depth and quantitative analysis of fluorescence decay for magneto-fluorescent nanocomposites. Herein, fluorescence intensity decay of acridine orange, a model fluorescent dye, was quantitatively determined with magnetic Fe3O4 nanoparticles in various concentrations ranging from 0 to 6250 ng . ml(-1). It was found that when the concentration of Fe3O4 NPs was lower than 0.0625 ng . ml(-1), the fluorescence intensity decreased sharply with increasing concentration of Fe3O4 NPs; when the NP concentrations ranged from 0.0625 ng . ml(-1) to 1.25 ng . ml(-1), the fluorescence intensity of acridine orange decreased linearly with increase of NP concentration; and when the concentration of Fe3O4 NPs exceeded 1.25 ng . ml(-1), essentially no fluorescence can be detected. These findings suggested that magneto-fluorescent composites with optimized fluorescence properties could be obtained by carefully controlling Fe3O4 nanoparticle component, and offered a better understanding of interaction between magnetic NPs and luminescence of fluorescent molecules.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35110
Appears in Collections:其它_期刊论文

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作者单位: 1.Chineses Acad Sci, Suzhou Inst Nanotech & Nanobion, Div Nanobiomed, Suzhou 215123, Peoples R China
2.Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Inst Funct Nano & Soft Mat FUNSOM, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215123, Jiangsu, Peoples R China
3.Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chineses Acad Sci, Inst Chem, Beijing 100190, Peoples R China
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