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SERS effect from Pd surfaces coated with thin films of Ag colloidal nanoparticles

机译:Ag胶态纳米颗粒薄膜包覆的Pd表面的SERS效应

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摘要

Surface-enhanced Raman scattering (SERS) effect provides huge intensification of the Raman signal of molecules adhering to nanostructured surfaces of high reflectivity metals as silver, gold and copper. Here, we present a method to provide SERS activation of palladium substrates by depositing thin layers of colloidal silver onto Pd surfaces pretreated with 1,10-phenanthroline. Density functional theory calculations have been carried out in order to simulate the structural and spectroscopic properties of the surface complex formed with the active sites of the Pd substrate and to get information about the type and strength of interaction between ligand molecules and palladium.
机译:表面增强拉曼散射(SERS)效应可极大增强粘附在高反射率金属(如银,金和铜)的纳米结构表面上的分子的拉曼信号。在这里,我们提出了一种通过将胶体银薄层沉积到用1,10-菲咯啉预处理的Pd表面上来提供SERS活化钯基质的方法。进行密度泛函理论计算,以模拟与Pd底物活性位点形成的表面配合物的结构和光谱性质,并获得有关配体分子与钯之间相互作用类型和强度的信息。

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