One-Dimensional Magneto-Optical Nanostructures: Template Synthesis, Structure, Properties, and Application in Spectroscopy Based on Plasmon Resonance

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-12-28 DOI:10.1109/LMAG.2021.3138346

Elizaveta Kozhina;Ekaterina Kulesh;Sergey Bedin;Ilia Doludenko;Alexey Piryazev;Ilya Korolkov;Artem Kozlovskiy;Maxim Zdorovets;Alexander Rogachev;Alena Shumskaya

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引用次数: 3

Abstract

A method for the formation of magneto-optical one-dimensional (1-D) nanostructures by the electrodeposition method into the pores of track-etched membranes is presented in this letter. Two possible techniques are considered: the synthesis of magnetic nanotubes and their subsequent coating with silver, as well as the synthesis of vertical-standing arrays of layered magneto-optical nanowires (NWs) with alternating layers of nickel and silver. The resulting nanotubes and NWs are polycrystalline microstructures with a nanostructured plasmon-active surface. The absorption spectra have a distinct peak corresponding to the position of the local plasmon resonance: in the near-infrared range for the nickel nanotubes coated with silver and in the optical range for the layered NWs. For layered NWs, there is a combination of absorption peaks of both silver and nickel. The use of the obtained 1-D magneto-optical nanostructures for the formation of plasmon-active magnetically controlled substrates as surface-enhanced Raman spectroscopy (SERS) active surfaces is suggested for the detection of Rhodamine 6G in concentration down to 10 ^–9 M. The increase of SERS signal intensity by using a magnetic field is shown for concentration 10 ⁻³ M with an extra signal amplification of more than four times.

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一维磁光纳米结构：基于等离子体共振的模板合成、结构、性能及其在光谱学中的应用

本文提出了一种通过电沉积方法在轨道蚀刻膜的孔中形成磁光一维（1-D）纳米结构的方法。考虑了两种可能的技术：磁性纳米管的合成及其随后的银涂层，以及具有镍和银交替层的层状磁光纳米线（NWs）的垂直立式阵列的合成。所得到的纳米管和NW是具有纳米结构等离子体活性表面的多晶微观结构。吸收光谱具有与局部等离子体共振位置相对应的不同峰值：对于涂有银的镍纳米管，在近红外范围内，对于层状NW，在光学范围内。对于层状NW，存在银和镍的吸收峰的组合。建议使用所获得的一维磁光纳米结构来形成等离子体活性磁控衬底作为表面增强拉曼光谱（SERS）活性表面，以检测浓度低至10–9 M的若丹明6G。浓度为10−3 M时，使用磁场可以增加SERS信号强度，额外的信号放大倍数超过四倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.