AVS 63rd International Symposium & Exhibition
    Surface Science Tuesday Sessions
       Session SS2+AS+HC+NS-TuM

Paper SS2+AS+HC+NS-TuM6
Three-Dimensional Control of Nanoparticle Layer Deposition by “Click Chemistry”

Tuesday, November 8, 2016, 9:40 am, Room 104E

Session: Nanostructures: Growth, Reactivity, and Catalysis
Presenter: Mackenzie Williams, University of Delaware
Authors: M.G. Williams, University of Delaware
A.V. Teplyakov, University of Delaware
Correspondent: Click to Email
Our previous studies have focused on the formation of highly-controlled nanoparticle mono- and multilayers of silica and magnetic iron oxide nanoparticles through the copper(I) catalyzed azide-alkyne cycloaddition reaction. By using the specific functionalization scheme in that method, we achieved very high surface coverage and the formation of exactly one nanoparticle layer per deposition cycle, as could be observed with scanning electron microscopy (SEM) and atomic force microscopy (AFM). Formation of the triazole ring from the “click” reaction was confirmed by infrared spectroscopy and X-ray photoelectron spectroscopy (XPS), while density functional theory calculations were used to confirm spectroscopic results and investigate the reasons behind the high coverage. In the current work, a higher level of control over the nanoparticle layers is being sought. Conformal filling of the layer over high aspect-ratio features is being studied and would allow this method to be used as a viable alternative to traditional layer-by-layer techniques. Additionally, control of the spatial resolution of the nanoparticle layers upon the substrate via alternative methods of catalysis initiation is currently being investigated.