具有反蛋白石结构的Au-Au复合材料的表面增强拉曼光谱

IF 2.2 4区 工程技术 Q2 Chemistry Gold Bulletin Pub Date : 2018-06-03 DOI:10.1007/s13404-018-0234-3
N.A. Martynova, A.E. Goldt, A.V. Grigorieva
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引用次数: 3

摘要

金色反蛋白石,另外装饰15.5±1.5?提出了纳米金纳米颗粒作为表面增强拉曼光谱(SERS)的可重复使用衬底。发现金纳米颗粒均匀分布,使胶体体系的光谱特性增强能力提高了10倍。该技术被证明是有效的光谱特征调谐通过不同的金衍生物的组合。两个激光器用于共振、预共振和非共振信号分析。使用632.8 nm谐振激光器进行激发,证明了亚甲基蓝作为稳定染料沉积在SERS芯片上的Au-Au复合膜的可重用性。亚甲蓝的增强因子为108,罗丹明6G的增强因子约为105。观察到,用蒸馏水冲洗Au-Au纳米复合SERS膜,加热至100?°C,然后将新的部分金胶体滴在平台上再生基底。
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Au-Au composites with inverse opal structure for surface-enhanced Raman spectroscopy

Golden inverse opals additionally decorated with 15.5?±?1.5?nm gold nanoparticles are proposed as reusable substrates for surface-enhanced Raman spectroscopy (SERS). Gold nanoparticles are found to be uniformly distributed making an input of enhancement ability of spectral characteristics with the colloidal system by ten times. This technique is demonstrated to be efficient in spectral features tuning via a combination of different gold derivatives. Two lasers served for resonant, pre-resonance, and non-resonance signal analyses. Reusability of the Au-Au composite films is demonstrated for methylene blue as a stable dye deposited onto the SERS chips using a 632.8-nm resonant laser for exciting. The enhancement factor for methylene blue achieved 108 and for rohodamine 6G was of about 105. It was observed that rinsing of Au-Au nanocomposite SERS films with distilled water and heating up to 100?°C followed by dropping on a new portion of Au colloids onto the platform regenerates the substrates.

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来源期刊
Gold Bulletin
Gold Bulletin 工程技术-材料科学:综合
CiteScore
3.30
自引率
4.50%
发文量
0
审稿时长
3 months
期刊介绍: Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.
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