Application of AAO Matrix in Aligned Gold Nanorod Array Substrates for Surface-Enhanced Fluorescence and Raman Scattering
Application of AAO Matrix in Aligned Gold Nanorod Array Substrates for Surface-Enhanced Fluorescence and Raman Scattering
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DOI：
10.1007/s11468-014-9751-y
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发表时间：
2014-12-01
期刊：
影响因子：
3
通讯作者：
Rice, James H.
中科院分区：
文献类型：
--
作者：
Damm, Signe;Lordan, Frances;Rice, James H.
在本文中，我们探测了探针分子罗丹明6G （R6G）在采用阳极氧化和恒电位电沉积相结合的自立金纳米棒阵列衬底上的表面增强拉曼散射（SERS）和表面增强荧光（SEF）。初始底物嵌入多孔氧化铝模板（AAO）中。通过控制AAO基体的厚度，SEF和SERS呈反比关系。由于等离子体在纳米棒上的活性不均匀，SERS和SEF对AAO矩阵的去除表现出非线性响应，FDTD计算支持了这一点。结果表明，通过优化AAO厚度，既可以获得最大的SERS和SEF，也可以同时观察SERS和SEF。
In this paper, we probed surface-enhanced Raman scattering (SERS) and surface-enhanced fluorescence (SEF) from probe molecule Rhodamine 6G (R6G) on self-standing Au nanorod array substrates made using a combination of anodization and potentiostatic electrodeposition. The initial substrates were embedded within a porous alumina template (AAO). By controlling the thickness of the AAO matrix, SEF and SERS were observed exhibiting an inverse relationship. SERS and SEF showed a non-linear response to the removal of AAO matrix due to an inhomogeneous plasmon activity across the nanorod which was supported by FDTD calculations. We showed that by optimizing the level of AAO thickness, we could obtain either maximized SERS, SEF or simultaneously observe both SERS and SEF together.