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Nanostructured Assemblies of Gold and Silver Nanoparticles for Plasmon Enhanced Spectroscopy Using Living Biotemplates

机译:使用活生物模板的等离子增强光谱的金和银纳米粒子的纳米结构组件。

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The ability to control the assembly of nanoparticles on substrates used in plasmon-enhanced spectroscopy continues to drive research in the field of nanofabrication. Here we describe the use of fungi as soft biotemplates to fabricate nanostructured microtubules with gold and gold-silver nanoparticles with potential applications as sensors and biosensors. In the first step, spores of the filamentous fungus Cladosporium sphaerospermum were inoculated in a suspension of gold nanoparticles, forming stable microtubules of gold nanoparticles during fungus growth. These materials were exposed to a second suspension of silver nanoparticles, resulting in complexes multilayers structures of gold and silver nanoparticles, which were evaluated as substrates for surface-enhanced Raman scattering (SERS) using small amounts of thiophenol as probe molecules directly on the microtubules. Both gold and the gold-silver substrates provide the SERS effect.
机译:控制用于等离激元增强光谱学的衬底上的纳米颗粒组装的能力继续推动纳米制造领域的研究。在这里,我们描述了使用真菌作为软生物模板来制造具有金和金银纳米颗粒的纳米结构微管,并将其潜在地用作传感器和生物传感器。第一步,将丝状真菌球形孢子的孢子接种在金纳米颗粒的悬浮液中,在真菌生长期间形成金纳米颗粒的稳定微管。将这些材料暴露于银纳米颗粒的第二悬浮液中,形成金和银纳米颗粒的复合物多层结构,将其用作表面增强拉曼散射(SERS)的底物,使用少量的硫酚作为探针分子直接在微管上。金和金银基底均提供SERS效果。

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