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首页> 外文期刊>Advanced Functional Materials >Plasmonic Self-Propel led Nanomotors for Explosives Detection via Solution-Based Surface Enhanced Raman Scattering
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Plasmonic Self-Propel led Nanomotors for Explosives Detection via Solution-Based Surface Enhanced Raman Scattering

机译：通过基于溶液的表面增强拉曼散射，用于检测爆炸物的等离子自推进式纳米电机

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摘要

Nanomotors represent a class of artificial machines that span the chasm between molecular motors and bigger micromotors. Their importance lies in the fact that to effectively navigate and perform tasks in a biological environment without alerting the action of the immune system, the maximal size of the object has to be well below 200 nm. Fully nanosized gold/silver core/shell plasmonic nanomotors using the seeded growth wet chemical approach, which allows high scalability of synthesis of the nanomotors compared to planar substrate-based methods, is presented. Using the nanoparticle tracking analysis, the catalysis driven enhanced diffusion of the plasmonic nanomotors in the presence of low concentrations of fuel is presented and shown that the prepared nanomotors are good candidates for a solution-based surface-enhanced Raman spectroscopy detection of picric acid, a typical explosive. In addition to the mentioned effects, ligand-exchange is performed on the nanomotors to replace the surfactant with its thiolated analog, a combination which is already proven in literature to be stealthy to the immune response of the living organism.
机译：纳米马达代表了一类人造机器，跨越了分子马达和更大的微型马达之间的鸿沟。它们的重要性在于以下事实：要在生物环境中有效导航和执行任务而不会引起免疫系统的作用，则物体的最大尺寸必须远低于200 nm。提出了使用种子生长湿化学方法的全纳米金/银核/壳等离激元纳米马达，与基于平面衬底的方法相比，纳米马达具有很高的可扩展性。使用纳米粒子跟踪分析，提出了在低浓度燃料存在下，催化驱动的等离激元纳米马达的扩散增强，并表明所制备的纳米马达是基于溶液的表面增强拉曼光谱检测苦味酸的良好候选者。典型的爆炸物。除上述作用外，还对纳米马达进行了配体交换，以其硫醇化类似物代替表面活性剂，这种结合在文献中已被证明对活生物体的免疫反应具有隐蔽性。

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  • 来源
    《Advanced Functional Materials》 |2019年第33期|1903041.1-1903041.7|共7页
  • 作者

    Novotny Filip; Plutnar Jan; Pumera Martin;

  • 作者单位

    Univ Chem & Technol Prague, Fac Chem Technol, Dept Inorgan Chem, Ctr Adv Funct Nanorobots, Tech 5, Prague 16628, Czech Republic;

    Univ Chem & Technol Prague, Fac Chem Technol, Dept Inorgan Chem, Ctr Adv Funct Nanorobots, Tech 5, Prague 16628, Czech Republic;

    Univ Chem & Technol Prague, Fac Chem Technol, Dept Inorgan Chem, Ctr Adv Funct Nanorobots, Tech 5, Prague 16628, Czech Republic|Yonsei Univ, Dept Chem & Biomol Engn, 50 Yonsei Ro, Seoul 03722, South Korea|Brno Univ Technol, Cent European Inst Technol, Future Energy & Innovat Lab, Purkynova 656-123, CZ-61600 Brno, Czech Republic;

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  • 正文语种 eng
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  • 关键词

    core-shell nanoparticles; explosives sensing; nanomotors; picric acid; plasmonics; self-propulsion; surface-enhanced Raman scattering;

    机译：核心壳纳米粒子;爆炸物感测;纳米热管;野皮酸;血浆;自推进;表面增强拉曼散射;

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