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SERS-active substrate assembled by Ag NW-embedded porous polystyrene fibers

机译：由Ag NW嵌入多孔聚苯乙烯纤维组装的SERS-活性基板

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摘要

Here we demonstrate a novel SERS-active substrate assembled by silver nanowire (Ag NW)-embedded porous polystyrene (PS) fibers. Ag NWs are synthesized through a glycerol-mediated solvothermal method firstly, then electrospun into PS porous fibers. The as-synthesized Ag NWs are embedded in PS fiber and aligned orderly along the axial direction. Porous structure appears in PS fiber due to the phase separation induced by rapid evaporation of solvents. Large amounts of holes not only greatly improve the sample collection efficiency of the SERS-active substrate, but also significantly facilitate the adsorption of target molecules on the surface of Ag NWs, thus increasing the probability of enhancement of target molecules. In addition, compared with polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP), PS has better solvent resistance. The detection limit of 4-aminothiophenol (4-ATP) on our fabricated electrospun fiber mats is 10(-7)M, and the electrospun fiber mats showed good reproducibility of SERS signal detection. This study proposes a feasible strategy for the large-scale preparation of flexible SERS-active substrate assembled by Ag NW-embedded porous PS fibers. The produced flexible SERS substrates may have potential application in wearable sensors for the trace detection of chemical and biological molecules.
机译：在这里，我们展示了由银纳米线（Ag NW）-embedded多孔聚苯乙烯（PS）纤维组装的新型SERS-活性基板。首先通过甘油介导的溶剂温度方法合成Ag NW，然后将Electrom Orthop ExterpOp op in合成为PS多孔纤维。 AS合成的AG NWS嵌入PS纤维中并沿轴向排列。由于通过快速蒸发溶剂而引起的相分离，多孔结构出现在PS纤维中。大量孔不仅大大提高了SERS-活性基材的样品收集效率，而且显着促进了AgNWS表面上的靶分子的吸附，从而增加了靶分子的增强的可能性。另外，与聚乙烯醇（PVA）和聚乙烯吡咯烷酮（PVP）相比，PS具有更好的耐溶剂性。我们制造的电纺纤维垫上4-氨基噻吩醇（4-ATP）的检出限为10（-7）M，电纺纤维垫显示出良好的SERS信号检测再现性。本研究提出了通过Ag NW嵌入式多孔PS纤维组装的柔性SERS-活性基板的大规模制备的可行策略。所生产的柔性SERS基材可以具有在可穿戴传感器中的潜在应用，用于痕量化学和生物分子。

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  • 来源
    《RSC Advances》 |2020年第37期|共7页
  • 作者

    Chen Shulin; Ding Chen; Lin Yong; Wu Xinzhou; Yuan Wei; Meng Xiuqing; Su Wenming; Zhang Ke-Qin;

  • 作者单位

    Zhejiang Normal Univ Zhejiang Prov Key Lab Solid State Optoelect Devic Jinhua 321004 Zhejiang Peoples R China;

    Chinese Acad Sci Printable Elect Res Ctr Suzhou Inst Nanotech &

    Nanobion Suzhou 215123 Peoples R China;

    Chinese Acad Sci Printable Elect Res Ctr Suzhou Inst Nanotech &

    Nanobion Suzhou 215123 Peoples R China;

    Chinese Acad Sci Printable Elect Res Ctr Suzhou Inst Nanotech &

    Nanobion Suzhou 215123 Peoples R China;

    Chinese Acad Sci Printable Elect Res Ctr Suzhou Inst Nanotech &

    Nanobion Suzhou 215123 Peoples R China;

    Zhejiang Normal Univ Zhejiang Prov Key Lab Solid State Optoelect Devic Jinhua 321004 Zhejiang Peoples R China;

    Chinese Acad Sci Printable Elect Res Ctr Suzhou Inst Nanotech &

    Nanobion Suzhou 215123 Peoples R China;

    Soochow Univ Coll Text &

    Clothing Engn Natl Engn Lab Modern Silk Suzhou 215123 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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