کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5369503 1388438 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Micro-patterns of Au@SiO2 core-shell nanoparticles formed by electrostatic interactions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Micro-patterns of Au@SiO2 core-shell nanoparticles formed by electrostatic interactions
چکیده انگلیسی

In this paper, silica-coated Au nanoparticles (Au@SiO2) were prepared by the technique of vortex mixing. Subsequently, these monodisperse Au@SiO2 nanoparticles were functionalized by the silane reagents 3-aminopropyltriethoxysilane (APS) and 3-mercaptopropyltriethoxysilane (MPTS) respectively. Then, these NH2-terminated and SO32−-terminated Au@SiO2 nanoparticles were respectively assembled onto the substrates, which have been patterned with different self-assembly monolayers (SAMs), to form close-packed two-dimensional Au@SiO2 nanoparticle arrays by electrostatic interactions. The morphologies and the optical properties of Au@SiO2 nanoparticles with different silica-shell thicknesses were characterized by TEM and UV-vis. The compositions and zeta potentials of the functionalized Au@SiO2 nanoparticles were examined by X-ray photoelectron spectroscopy (XPS) and dynamic light scattering (DLS). The morphologies of the patterns formed on different templates were characterized by atomic force microscopy (AFM).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 6, 15 January 2008, Pages 1684-1690
نویسندگان
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