高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (12): 2752-2757.doi: 10.7503/cjcu20180366

• 物理化学 • 上一篇    下一篇

一种保护层可揭除的新鲜多级银SERS活性基底

徐蔚青1, 管树霖2, 王祎1, 王馨楠1, 陶艳春1(), 徐抒平1   

  1. 1. 吉林大学超分子结构与材料国家重点实验室, 理论化学研究所, 长春 130012
    2. 延边大学理学院化学系, 延吉 133002
  • 收稿日期:2018-05-17 出版日期:2018-12-03 发布日期:2018-09-29
  • 作者简介:

    联系人简介: 陶艳春, 女, 高级工程师, 主要从事光谱分析研究. E-mail: taoyc@jlu.edu.cn

  • 基金资助:
    国家自然科学基金(批准号: 21573087, 21573092, 201873039)资助.

Fresh Hierarchical Periodic Silver SERS-active Substrate with the Band-aid Protecting Layer

XU Weiqing1, GUAN Shulin2, WANG Yi1, WANG Xinnan1, TAO Yanchun1,*(), XU Shuping1   

  1. 1. State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry,Jilin University, Changchun 130012, China
    2. Department of Chemistry, College of Science, Yanbian University, Yanji 133002, China
  • Received:2018-05-17 Online:2018-12-03 Published:2018-09-29
  • Contact: TAO Yanchun E-mail:taoyc@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21573087, 21573092, 201873039).

摘要:

以多级结构的阳极氧化铝(AAO)为模板, 通过真空蒸镀金属银层拷贝AAO的多级结构, 获得了以AAO及铝基为保护层的银多级微纳结构. 该保护层可在基底用于表面增强拉曼散射(SERS)检测时直接揭除. 此方法解决了传统银材质纳米结构作为SERS基底使用时表面易被氧化及污染的问题, 可最大程度保证基底的新鲜度, 做到即用即揭.

关键词: 表面增强拉曼散射基底, 阳极氧化铝模板, 保护层

Abstract:

A novel band-aid like, hierarchical periodic structured, multilayered surface-enhanced Raman scattering(SERS) substrate was developed, which allows a fresh silver surface when peeling off the protector. It was prepared by the vacuum deposition of a thick Ag layer(600 nm) on a hierarchical periodic structured anodic alumina(AAO) that was achieved by anodizing a pre-patterned Al base by means of the nanoimprint lithography with a hard Ni mask, while the AAO layer plays a role of surface protector. Then, the Ag side was glued to a glass slide. When it is used for SERS, the AAO layer can be peeled off to allow for a naked, fresh Ag surface for SERS measurements. This method solves the problem of oxidation and pollution of traditional Ag SERS substrates, ensuring the freshness of the SERS substrate. The AAO preparation steps are largely simplified compared with other AAO preparation procedures. Owing to the use of the nanoimprint lithography, the periodic structure of the Ni stamp can be well copied, which insures the reducibility of the final SERS substrate in SERS measurements. Apparently, the substrate preparation is time-saving and easier, which makes this band-aid like SERS substrate promising for being a commercial SERS substrate.

Key words: Surface-enhanced Raman scattering(SERS) substrate, Anodic alumina(AAO) template, Protective layer

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