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首页> 外文期刊>Advanced Functional Materials >Highly Bright and Compact Alloyed Quantum Rods with Near Infrared Emitting: a Potential Multifunctional Nanoplatform for Multimodal Imaging In Vivo
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Highly Bright and Compact Alloyed Quantum Rods with Near Infrared Emitting: a Potential Multifunctional Nanoplatform for Multimodal Imaging In Vivo

机译：具有近红外发射功能的高亮度和紧凑合金量子棒：用于体内多峰成像的潜在多功能纳米平台

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摘要

Controlling synthesis of near-infrared emitting quantum rods (QRs) for in vivo imaging is a major challenge in the fabrication of multifunctional nanoprobes. Here, a reliable synthetic approach for CdTe_xSe_(1-x)/ZnS alloy nanocrystals to achieve highly bright (quantum yields up to 80%) with controllable rod-shape and near-infrared (650-870 nm) emission is developed. Aspect ratio and emission of QRs are correlated with composition, which can be easily tuned by changing Te and Se mole ratio. It illustrates that the content of Se plays an important role in maintaining the rod-shape, while Te has a significant impact on emitting of the nanorods. Besides exhibiting great stability over a broad range of pH (4-10) and ion strength (up to 2 mol L~(-1) NaCl solution), these hydrophilic QRs display good photo stability and storage stability. In particular, the specially absorbing of paramagnetic gadolinium ions on the QRs lead to a versatile method to engineer multimodal imaging nanoprobes, which are applied for in vivo lymph node dual-modal imaging (fluorescence and magnetic resonance imaging). These results suggest a promising strategy for engineering multifunctional imaging nanoprobes with the stable near-infrared QRs.
机译：在体内多功能成像中，控制近红外发射量子棒（QR）的合成以进行体内成像是一项重大挑战。在这里，开发了一种可靠的合成方法，用于CdTe_xSe_（1-x）/ ZnS合金纳米晶体，以实现可控的棒状和近红外（650-870 nm）发射，从而获得高亮度（量子产率高达80％）。 QR的长宽比和发射与组成相关，可以通过更改Te和Se的摩尔比轻松地对其进行调整。这表明，Se的含量在保持棒形中起着重要的作用，而Te对纳米棒的发射具有重要的影响。这些亲水性QR除了在很宽的pH（4-10）和离子强度（高达2 mol L〜（-1）NaCl溶液）范围内表现出出色的稳定性外，还表现出良好的光稳定性和储存稳定性。特别地，QRs上顺磁性g离子的特别吸收导致了一种工程化多模态成像纳米探针的通用方法，该纳米探针被用于体内淋巴结双模态成像（荧光和磁共振成像）。这些结果表明，用稳定的近红外QR设计多功能成像纳米探针的策略很有希望。

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  • 来源
    《Advanced Functional Materials》 |2014年第25期|3897-3905|共9页
  • 作者

    Duyang Gao; Pengfei Zhang; Zonghai Sheng; Dehong Hu; Ping Gong; Chi Chen; Qian Wan; Guanhui Gao; Lintao Cai;

  • 作者单位

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    P. C. Lauterbur, Research Center for Biomedical Imaging Institute of Biomedical and Health Engineering Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

    CAS Key Laboratory of Health Informatics Guangdong Key Laboratory of Nanomedicine Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055, China;

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