title: A facile synthesis method to silica coated CdSe/ZnS nanocomposites with tuneable size and optical properties.
abstract: A facile method for the preparation of single Quantum Dots (QDs) in silica spheres with tunable size and optical property has been developed. A time interval addition of silica precursor method has been used to increase the size of the silica shell and in parallel tuning the photoluminescence property. The resulting CdSe/ZnS/SiO(2) nanocomposites were characterized by transmission electron microscopy, photoluminescence spectroscopy and zeta-potential measurements. Since for different applications of silica coated core-shell nanoparticles, control over the thickness of the shell in parallel with tuning on the optical property of the final product required, these study could pave the way for the application of this nanocomposites in different fields like photonic crystals, biolabeling, etc.
authors: Physics Faculty, University of Duisburg-Essen, Duisburg, Germany. Masih.darbandi@uni-due.de
authors: Masih
authors: M
authors: Darbandi
authors: Gerald
authors: G
authors: Urban
authors: Michael
authors: M
authors: Krüger
mesh_terms: D019187:Cadmium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D053761:Nanocomposites / Q000737:chemistry*; D055095:Optics and Photonics; D010316:Particle Size; D045663:Quantum Dots; D018036:Selenium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D012822:Silicon Dioxide / Q000138:chemical synthesis* / Q000737:chemistry; D013440:Sulfides / Q000138:chemical synthesis* / Q000737:chemistry; D013499:Surface Properties; D017967:Zinc Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D018036:Selenium Compounds; D013440:Sulfides; D017967:Zinc Compounds; D012822:Silicon Dioxide; C058667:cadmium selenide; C031238:zinc sulfide