Fabrication of Triple-Layered Magnetite-Hydrogel-Gold Nanocomposites for Biomedical Applications
| Autor: | Sang-Wha Lee, Sera Lim |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Scanning electron microscope Magnetism Radical polymerization Biomedical Engineering Bioengineering macromolecular substances complex mixtures Nanocomposites chemistry.chemical_compound Microscopy Electron Transmission Diamine General Materials Science Magnetite Nanocomposite technology industry and agriculture Hydrogels General Chemistry equipment and supplies Condensed Matter Physics Ferrosoferric Oxide chemistry Chemical engineering Transmission electron microscopy Self-healing hydrogels Microscopy Electron Scanning Gold |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 12:1242-1245 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2012.4626 |
| Popis: | Magnetite-hydrogel-gold nanocomposites with optical-active, thermo-responsive, and magnetism have been prepared by the following consecutive steps. Hydrogel-encapsulated magnetites were first synthesized by the combination of sol-gel reaction and radical polymerization process, and the resulting magnetic hydrogels were subsequently bound with nano-sized Au (1-3 nm) via a molecular linkage of diamine ligand which was covalently bonded to the carboxylic groups on the hydrogel surface. Au seeds anchored on the magnetic hydrogels were further reduced into nano-scale Au layer which induced the distinct red-shift of absorption band into NIR region. The optical properties and surface morphology of the nanocomposites were characterized by UV-vis spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). |
| Databáze: | OpenAIRE |
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