Rapid fabrication of flexible and transparent gold nanorods/poly (methyl methacrylate) membrane substrate for SERS nanosensor application
Rapid fabrication of flexible and transparent gold nanorods/poly (methyl methacrylate) membrane substrate for SERS nanosensor application
复制标题
快速制造用于SERS纳米传感器应用的柔性透明金纳米棒/聚甲基丙烯酸甲酯膜基底
DOI：
10.1016/j.saa.2018.05.068
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Yin Peng-Gang
中科院分区：
文献类型：
--
作者：
Yang Nan;You Ting-Ting;Gao Yu-Kun;Zhang Chen-Meng;Yin Peng-Gang
柔性基板已被提议用于日常生活中的SERS检测，因为它们具有突出的样品收集特性，例如它们可以包裹在非平面物体表面上。将贵金属与聚合物结合，可以制备出具有重量轻、透明和高SERS灵敏度的柔性SERS衬底。在此，我们通过在PMMA模板上自组装均匀的aunr阵列层，制备了金纳米棒(aunr)/聚甲基丙烯酸甲酯（PMMA）薄膜作为柔性SERS衬底。该AuNRs/PMMA薄膜具有优异的痕量硫检测性能，最低检测浓度为0.5 ppb。通过在目标表面直接覆盖aunr /PMMA柔性薄膜，将制备的基底应用于黄瓜的实际检测。此外，高的SERS灵敏度和良好的重现性为非平面表面的进一步应用提供了广阔的前景。
Flexible substrates have been proposed for daily-life applications in SERS detection due to the prominent sample collection properties such as they can be wrapped around non-planar object surface. Combining the noble metals with polymers, flexible SERS substrates could be fabricated with advantages of light weight, transparency and high SERS sensitivity. Herein, we prepare a gold nanorods (AuNRs)/poly(methyl methacrylate) (PMMA) film as flexible SERS substrate by self-assembling a uniformly AuNRs array layer on PMMA template. This AuNRs/PMMA film performs excellently on thiram trace detection with the lowest detection concentration of 0.5 ppb. The fabricated substrates were applied for practical detection with cucumber by directly covering the AuNRs/PMMA flexible film on the target surface. Furthermore, the high SERS sensitivity as well as great reproducibility present a wide range of prospections for the further application of non-plane surface.