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Effect of Eu doping concentration on fluorescence and magnetic resonance imaging properties of Gd2O3:Eu3+ nanoparticles used as dual-modal contrast agent

机译：EU掺杂浓度对Gd2O3：Eu3 +纳米粒子用作双型造影剂的荧光和磁共振成像性能的影响

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摘要

Europium-doped gadolinium oxide (Gd2O3:Eu3+) nanoparticles (NPs) with favorable properties for use in fluorescence imaging (FI) and magnetic resonance imaging (MRI) dual-modal contrast agent has attracted intense attention in biomedical applications. However, limited information is available on balancing FI and MRI by adjusting doping concentrations. In this study, Gd2O3:Eu3+ NPs with various Eu3+ doping concentrations were prepared by the facile and general technique of laser ablation in liquid (LAL). The influence of Eu3+-doping concentration on fluorescence properties and longitudinal relaxivity were investigated. The optimum Eu3+-doping concentration with both high fluorescence properties and longitudinal relaxivity was determined to be 5%. The characterization of the structure, morphology, and composition shows that these NPs possess good crystallinity and excellent dispersibility. These results show that Gd(2)0(3):Eu3+ NPs prepared by LAL are promising candidates for highly efficient FI and MRI dual-modal contrast agents.
机译：铕掺杂的氧化钆（GD2O3：EU3 +）纳米颗粒（NPS）具有良好的荧光成像（FI）和磁共振成像（MRI）双型造影剂在生物医学应用中引起了强烈的关注。但是，通过调整掺杂浓度，在平衡Fi和MRI上提供有限的信息。在该研究中，通过液体（LAL）中的激光烧蚀的容易和一般的技术制备具有各种EU3 +掺杂浓度的GD2O3：EU3 + NP。研究了EU3 +掺杂浓度对荧光性能和纵向松弛率的影响。确定具有高荧光性能和纵向松弛率的最佳EU3 +掺杂浓度为5％。结构，形态和组合物的表征表明，这些NP具有良好的结晶度和优异的分散性。这些结果表明，GD（2）0（3）：LAL制备的EU3 + NP是高效FI和MRI双型造影剂的候选者。

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  • 来源
    《Nanotechnology》 |2018年第41期|共10页
  • 作者

    Deng Huawei; Chen Fei; Yang Chuan; Chen Min; Li Li; Chen Dihu;

  • 作者单位

    Sun Yat Sen Univ Sch Elect &

    Informat Technol State Key Lab Optoelect Mat &

    Technol Guangzhou 510275 Guangdong Peoples R China;

    Univ Minnesota Twin Cities Sch Phys &

    Astron 116 Church St SE Minneapolis MN 55455 USA;

    Sun Yat Sen Univ Imaging Diag &

    Intervent Ctr State Key Lab Oncol South China Canc Ctr Guangzhou 510060 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Phys State Key Lab Optoelect Mat &

    Technol Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Imaging Diag &

    Intervent Ctr State Key Lab Oncol South China Canc Ctr Guangzhou 510060 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Elect &

    Informat Technol State Key Lab Optoelect Mat &

    Technol Guangzhou 510275 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    dual-modal; Gd2O3:Eu3+; nanoparticles; laser ablation in liquid; doping concentration;

    机译：双模;GD2O3：EU3 +;纳米颗粒;液体激光烧蚀;掺杂浓度;

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