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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Fabrication of transparent SERS platform via interface self-assembly of gold nanorods and gel trapping technique for on-site real time detection
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Fabrication of transparent SERS platform via interface self-assembly of gold nanorods and gel trapping technique for on-site real time detection

机译：通过金纳米棒的界面自组装和凝胶捕获技术制备透明的SERS平台，用于现场实时检测

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摘要

A transparent SERS platform was fabricated via the gel-trapping method coupled with a liquid/liquid interface self-assembly technique. We employed gold nanorods as the building blocks for interface self-assembly because of their strong localized surface plasmons upon excitation by infrared radiation. Based on a "top cover'' configuration, this transparent SERS platform endows high signal reproducibility for directly detecting liquid samples by confining the sample droplet into a regular shape. The Au NR PDMS platform was able to directly detect crystal violet in aqueous solutions down to 10 ppb level with high enhancement factor (0.87 x 10(5)) and signal uniformity (RSD = 3.9%). Furthermore, SERS-based anti-fungal agent detection on a fish scale was demonstrated by simply covering the fish scale with a tailored GNRs PDMS film. The experimental results clearly show that the Au NR PDMS SERS platform has great potential for on-site real time detection of contaminants in water as well as on curved surfaces.
机译：通过凝胶捕获方法和液/液界面自组装技术，制造了透明的SERS平台。我们使用金纳米棒作为界面自组装的基础，因为它们在红外辐射激发下具有很强的局部等离激元。该透明SERS平台基于“顶盖”配置，通过将样品液滴限制为规则形状而具有高信号重现性，可直接检测液体样品，Au NR PDMS平台能够直接检测水溶液中的结晶紫10 ppb的水平，具有高增强因子（0.87 x 10（5））和信号均匀性（RSD = 3.9％）。此外，通过用量身定制的简单覆盖鱼鳞来证明基于SERS的鱼鳞抗真菌剂检测GNRs PDMS膜实验结果清楚地表明，Au NR PDMS SERS平台具有用于现场实时检测水中以及曲面上污染物的巨大潜力。

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