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Special properties of luminescent magnetic NaGdF4:Yb3+, Er3+ upconversion nanocubes with surface modifications

机译:发光磁性NAGDF4的特殊特性:YB3 +,ER3 + Upconversvers纳米内容,具有表面修改

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摘要

A one-pot process is developed to produce NaGdF4: Yb3+, Er3+ upconversion nanocubes (UCNCs) with amine surface modifications. The photoluminescence and magnetic properties of the amine modified unpconversion nanocubes (UCNCs) were investigated. The emissions of green light at 540 nm and red light at 660 nm are observed under infrared excitation (lambda(ex) = 980 nm) to both of UCNCs in aqueous solution and dry form. The emission at 660 nm is inhibited by non-radiative decay process when water interacts with the amine functional group on the surface of nanocubes. In addition, the magnetic susceptibility of the nanocubes is 1.049 X 10(-4) emu g(-1) Oe(-1) at room temperature, which is 29% larger than the reported value. NIH/3T3 mouse fibroblast cell line was used to study the cytotoxicity of the UCNCs with amine surface modifications. The produced UCNCs with surface modification do not impose toxic effect on cells. The findings could help to better apply upconversion nanocubes in bio-imaging by choosing suitable interfacial media.
机译:开发一个单壶工艺以产生NAGDF4:YB3 +,ER3 +上转化纳米尺(UCNC),具有胺表面修饰。研究了胺改性的Unpcondersion纳米尺(UCNC)的光致发光和磁性。在红外激发(Lambda(ex)= 980nm)下观察到540nm和660nm的红色光的绿光排放,以溶液和干燥形式在UCNC中的两个UCNC中观察到。当水与纳米孔表面上的胺官能团相互作用时,通过非辐射衰变过程抑制660nm的发射。另外,在室温下纳米孔的磁化率为1.049×10(-4)Emu g(-1)OE(-1),比报告的值大29%。 NIH / 3T3小鼠成纤维细胞系用于研究UCNC与胺表面修饰的细胞毒性。具有表面改性的产生的UCNC不会对细胞产生有毒影响。结果可以帮助通过选择合适的界面介质更好地在生物成像中更好地应用上增强纳米孔。

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  • 来源
    《RSC Advances》 |2017年第43期|共6页
  • 作者单位

    Univ Western Ontario Dept Chem &

    Biochem Engn London ON N6A 5B9 Canada;

    Univ Western Ontario Dept Med Biophys London ON N6A 5C1 Canada;

    HORIBA Canada Inc 347 Consortium Court London ON N6E 2S8 Canada;

    Univ Western Ontario Dept Chem &

    Biochem Engn London ON N6A 5B9 Canada;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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