Author : Yi Zhai
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (956 download)
Book Synopsis Synthesis, Characterization, and Application of Silicon and Cu/Ge Nanomaterials by : Yi Zhai
Download or read book Synthesis, Characterization, and Application of Silicon and Cu/Ge Nanomaterials written by Yi Zhai and published by . This book was released on 2015 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon nanocrystals (SiNCs) have been suggested as promising candidates for bioimaging because of their abundance, biocompatibility, and stable photoluminescent properties. However, "naked" SiNCs are insoluble in water and very reactive. As a result, NC surface functionalization is necessary to induce stability - fortunately this also offers the opportunity to target specific cell structures for imaging. This present thesis describes the preparation of photoluminescent D-mannose and L-alanine functionalized SiNCs obtained from the chlorination of hydride-terminated Si-NCs followed by reaction with appropriate carbohydrate and amino acid modifiers. Detailed characterization of the prepared nanoparticles was performed. Water soluble mannose and alanine functionalized SiNCs can be internalized by MCF-7 human breast cancer cells as shown in the detailed cell imaging studies. Copper germanide is an appealing metallization material for Si-based devices due to the low resistivity and oxidatively stable up to 520 °C. A synthetic method of copper-germanium alloy (Cu3Ge and Cu0.85Ge0.15) nanocrystals is described within this thesis. Copper-germanium alloy nanocrystals have been prepared by synthesis of Cu/GeO2 core shell nanocrystals (Cu@GeO2) followed by reductive thermal annealing process. This method affords freestanding, diameters of 70-300 nm copper-germanium alloy nanocrystals depend on the annealing temperature.