This paper reports a methodology for synthesizing and ordering gold nanoframes into three-dimensional (3D) arrays with a controlled thickness, leading to homogeneous plasmonic superstructures, with which quantitative analysis via surface-enhanced Raman spectroscopy (SERS) has been successfully demonstrated. Because this preparation method allows for systematic control of nanoframe film thickness and the resulting 3D plasmonic superstructure, which exhibits a unique nanoporous network of hot-spots, detection limits down to 10-18 M, corresponding to ≈6000 molecules, have been measured. Compared to analogous solid nanoparticle superstructures, the nanoframe superstructures with their unique nanoporous architecture effectively dissipate the heat inevitably generated by laser excitation during measurement, effectively suppressing the formation of carbonaceous materials and therefore their accompanying fluorescence interference, especially important for low concentration detection.

中文翻译：

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通过金纳米框架的3D超晶格阵列与原子摩尔检测对表面增强拉曼光谱进行定量分析。

本文报道了一种方法，该方法用于将金纳米框架合成和排序为具有受控厚度的三维（3D）阵列，从而导致均质等离子体超结构，并已成功证明了通过表面增强拉曼光谱（SERS）进行的定量分析。因为这种制备方法可以系统地控制纳米框架膜的厚度和所产生的3D等离子体超结构，该结构表现出独特的热点纳米多孔网络，所以已测量了低至10-18 M（对应于≈6000个分子）的检测限。与类似的固态纳米颗粒超结构相比，具有独特的纳米多孔结构的纳米框架超结构有效地散发了在测量过程中激光激发不可避免产生的热量，