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Facile surface modification of nickel ferrite nanoparticles for inherent multiple fluorescence and catalytic activities

机译：镍铁氧体纳米粒子的容易表面改性固有的多荧光和催化活性

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摘要

We synthesized biocompatible NiFe2O4 nanoparticles (NPs) with diameters below 10 nm by coating their surface with a tartrate ligand, which interestingly give rise to photoluminescence covering the entire visible region. The analyses with various spectroscopic tools reveal that the reason behind the unique fluorescence properties of functionalized NiFe2O4 NPs is ligand-to-metal charge-transfer transition from the highest occupied energy level of tartrate ligand to the lowest unoccupied energy level of Ni2+ and d-d transitions centered over Ni2+ ions in the NPs. These fluorescent NPs are also found to be suitable for cell imaging. Moreover, the functionalized NiFe2O4 NPs show a good catalytic activity on biologically and environmentally toxic pigments, such as bilirubin and methylene blue which leads to their wide application towards therapeutics and waste water treatment. We believe that the developed multifunctional NiFe2O4 NPs would stimulate the opportunities for advanced biomedical applications.
机译：通过用酒石酸酯配体涂覆它们的表面，我们合成了直径低于10nm以下的生物相容性NiFe2O4纳米颗粒（NPS），这有助于覆盖整个可见区域的光致发光。具有各种光谱工具的分析表明，官能化NiFe2O4 NPS独特的荧光性质背后的原因是从酒石酸盐配体的最高占用能级到Ni2 +和DD转换的最低未占用能级的配体 - 金属电荷转移转变在NPS中的NI2 +离子。也发现这些荧光NPS适用于细胞成像。此外，功能化镍铁纳米粒子显示在生物和环境有毒的颜料，如胆红素和亚甲蓝良好的催化活性，从而导致他们对治疗和废水处理广泛的应用。我们认为，发达的多功能NiFe2O4 NPS将刺激高级生物医学应用的机会。

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  • 来源
    《RSC Advances》 |2018年第1期|共6页
  • 作者

    Talukdar Souvanik; Rakshit Rupali; Kraemer Andre; Mueller Frank A.; Mandal Kalyan;

  • 作者单位

    SN Bose Natl Ctr Basic Sci Dept Condensed Matter Phys &

    Mat Sci JD Block Sect 3 Kolkata 700106 India;

    SN Bose Natl Ctr Basic Sci Dept Condensed Matter Phys &

    Mat Sci JD Block Sect 3 Kolkata 700106 India;

    Friedrich Schiller Univ Jena Otto Schott Inst Mat Forsch OSIM Lobdergraben 32 D-07743 Jena Germany;

    Friedrich Schiller Univ Jena Otto Schott Inst Mat Forsch OSIM Lobdergraben 32 D-07743 Jena Germany;

    SN Bose Natl Ctr Basic Sci Dept Condensed Matter Phys &

    Mat Sci JD Block Sect 3 Kolkata 700106 India;

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