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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Gyroid-structured Au-Ag periodic bimetal materials for ultrasensitive SERS detection
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Gyroid-structured Au-Ag periodic bimetal materials for ultrasensitive SERS detection

机译：用于超敏感的SERS检测的陀螺结构化AU-AG定期二金属材料

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摘要

Surface enhanced Raman scattering (SERS) has attracted much research attention for analysis and trace detection. In this work, we fabricated a gyroid-structured Au-Ag bimetal plasmonic material GSPMMs@Au by incorporating gyroid-structured silver periodic metallic materials (GSPMMs) with Au nanoparticles (NPs). By controlling the galvanic reaction time, we found that the highest surface plasmonic resonance enhancement among all the samples can be acquired with a deposition time of 50 s (GSPMMs@Au50). Finite-difference time domain simulation results prove that plasmonic coupling between the Au-Ag interface dramatically enhances the SERS performance. The SERS detection limit of bis(2-ethylhexyl) (DEHP) molecules based on GSPMMs@Au50 was 3.4 x 10(-18) M, which is the best result among recently published studies.
机译：表面增强拉曼散射（SERS）在分析和痕量检测方面引起了广泛关注。在这项工作中，我们制作了一种回旋结构的Au-Ag双金属等离子体材料GSPMMs@Au通过将回旋结构银周期金属材料（GSPMMs）与金纳米颗粒（NPs）结合。通过控制电偶反应时间，我们发现在所有样品中，沉积时间为50秒时可以获得最高的表面等离子体共振增强(GSPMMs@Au50)时域有限差分模拟结果证明，Au-Ag界面之间的等离子体耦合显著提高了SERS性能。双（2-乙基己基）（DEHP）分子的SERS检测限GSPMMs@Au50是3.4x10（-18）M，这是最近发表的研究中最好的结果。

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  • 作者

    Zhang Shuqian; Wu Liping; Wang Wanlin; Zhang Wang; Gu Jiajun; Liu Qinglei; Zhang Di;

  • 作者单位

    Shanghai Jiao Tong Univ State Key Lab Met Matrix Composite 800 Dongchuan Rd Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Met Matrix Composite 800 Dongchuan Rd Shanghai 200240 Peoples R China;

    Shenzhen Univ Coll Elect Sci &

    Technol Shenzhen 518060 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Met Matrix Composite 800 Dongchuan Rd Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Met Matrix Composite 800 Dongchuan Rd Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Met Matrix Composite 800 Dongchuan Rd Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Met Matrix Composite 800 Dongchuan Rd Shanghai 200240 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
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