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首页> 外文期刊>Chemistry: A European journal >Synthesis and characterization of red-luminescent graphene oxide functionalized with silica-coated Eu~(3+) complex nanoparticles
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Synthesis and characterization of red-luminescent graphene oxide functionalized with silica-coated Eu~(3+) complex nanoparticles

机译：二氧化硅包覆的Eu〜（3+）配合物纳米粒子官能化的红色发光氧化石墨烯的合成与表征

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摘要

Traditional dye-doped fluorescent graphene oxide (GO) reveals a low quantum yield and a short life expectancy. Herein, red-luminescent silica-coated Eu~(3+) complex nanoparticles were synthesized and covalently coupled to GO nanosheets by means of a carbodiimide-mediated amidation process. SEM and TEM studies demonstrated successful attachment of the silica-coated Eu ~(3+) complex nanoparticles onto the GO surface. Spectroscopic studies showed that the GO-nanoparticle conjugates exhibit strong luminescence, long lifetimes, as well as good photostability, which suggests that this new type of luminescent nanomaterial has the potential for highly sensitive time-resolved fluorescence cyto- and histochemistry imaging. Seeing red: Red-luminescent silica-coated Eu~(3+) complex nanoparticles were synthesized and covalently coupled to graphene oxide (GO) nanosheets (see scheme). They showed strong luminescence, a long lifetime, and potential for highly sensitive time-resolved fluorescence cyto- and histochemistry imaging.
机译：传统的染料掺杂荧光氧化石墨烯（GO）显示出低的量子产率和较短的预期寿命。在此，合成了红色发光的二氧化硅涂覆的Eu〜（3+）络合物纳米颗粒，并通过碳二亚胺介导的酰胺化过程将其共价偶联到GO纳米片上。 SEM和TEM研究表明，二氧化硅包覆的Eu〜（3+）络合物纳米颗粒成功附着在GO表面。光谱研究表明，GO-纳米颗粒共轭物表现出强发光性，长寿命以及良好的光稳定性，这表明这种新型发光纳米材料具有用于时间分辨荧光细胞和组织化学成像的高灵敏度潜力。看到红色：合成了红色发光二氧化硅涂层的Eu〜（3+）络合物纳米颗粒，并将其共价偶联到氧化石墨烯（GO）纳米片上（参见方案）。它们显示出强发光，长寿命和潜在的高灵敏度时间分辨荧光细胞化学和组织化学成像的能力。

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