Institut de Recherche Interdisciplinaire (IRI, USR-3078) Parc de la Haute Borne, 50 avenue de Halley, BP 70478, 59658 Villeneuve d'Ascq, France.
Langmuir. 2010 Mar 16;26(6):4266-73. doi: 10.1021/la903330d.
This article reports on the fabrication and characterization of plasmonic interfaces composed of a sandwiched structure comprising a tin-doped indium oxide (ITO) substrate, gold nanostructures (Au NSs), and a thin ITO film overcoating. The change in the optical characteristics of the ITO/Au NSs/ITO interfaces as a function of the ITO overlayer thickness (d(ITO) = 0-200 nm) was followed by recording UV-vis transmission spectra. The influence of the thickness of the ITO overcoating on the position and shape of the plasmonic signal is discussed. The possibility to functionalize the ITO/Au NSs/ITO interfaces chemically is demonstrated by covalently linking ethynyl ferrocene to azide-terminated ITO/Au NSs/ITO interfaces. The resulting interfaces were characterized using X-ray photoelectron spectroscopy (XPS), electrochemical (cyclic voltammetry and differential pulse voltammetry) techniques, and UV-vis transmission spectroscopy.
本文报道了由夹心结构组成的等离子体界面的制造和特性，该结构包括掺锡氧化铟（ITO）衬底、金纳米结构（Au NSs）和覆盖其上的薄 ITO 薄膜。通过记录紫外-可见透射光谱，研究了 ITO/Au NSs/ITO 界面的光学特性随 ITO 覆盖层厚度（d(ITO)=0-200nm）的变化。讨论了 ITO 覆盖层厚度对等离子体信号位置和形状的影响。通过将乙炔基二茂铁共价连接到叠氮端的 ITO/Au NSs/ITO 界面，证明了 ITO/Au NSs/ITO 界面进行化学功能化的可能性。使用 X 射线光电子能谱（XPS）、电化学（循环伏安法和差分脉冲伏安法）技术和紫外-可见透射光谱对得到的界面进行了表征。
