Park Hyoung Kun, Yoon Jae Keun, Kim Kwan
Laboratory of Intelligent Interfaces, School of Chemistry, Seoul National University, Seoul 151-742, Korea.
Langmuir. 2006 Feb 14;22(4):1626-9. doi: 10.1021/la052559o.
This paper describes a very simple electroless-plating method used to prepare optically tunable nanostructured Ag films. Very stable Ag films can be reproducibly fabricated simply by soaking glass substrates in ethanolic solutions of AgNO3 and butylamine. The grain size of silver can be readily controlled to range from 20 to 150 nm, and these nanostructural features correlated well with their UV/vis absorption characteristics, as well as with their surface-enhanced Raman scattering (SERS) activities. It is also very advantageous that the Ag films prepared exhibit very even SERS activity over an area up to hundreds thousand square-micrometers, and the enhancement factor estimated using benzenethiol as a prototype adsorbate reaches approximately 2 x 10(5). Since the proposed method is cost-effective and is suitable for the mass production of diverse Ag films irrespective of the shapes of the underlying substrates, it is expected to play a significant role in the development of surface plasmon-based analytical devices.
本文描述了一种用于制备光学可调纳米结构银膜的非常简单的化学镀方法。只需将玻璃基板浸泡在硝酸银和丁胺的乙醇溶液中，就能可重复地制备出非常稳定的银膜。银的晶粒尺寸可轻松控制在20至150纳米范围内，这些纳米结构特征与其紫外/可见吸收特性以及表面增强拉曼散射（SERS）活性密切相关。所制备的银膜在高达数十万平方微米的区域内表现出非常均匀的SERS活性，以苯硫醇作为原型吸附质估算的增强因子达到约2×10⁵，这也是非常有利的。由于所提出的方法具有成本效益，并且适用于大规模生产各种形状的银膜，而与底层基板的形状无关，因此有望在基于表面等离子体的分析设备的开发中发挥重要作用。
