By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Nanoparticles have been published. According to news reporting out of Seoul, South Korea, by NewsRx editors, research stated, "Thin pDMAEMA shells were formed on the surface of silica nanoparticles via vapor deposition polymerization. Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and elemental analysis have been used to characterize the resulting pDMAEMA-coated silica nanoparticles."
Our news journalists obtained a quote from the research from Seoul National University, "Electron microscopy studies reveal that the thin polymer shell is formed on the silica surface. In this work, the particle diameter can be controlled (from similar to 19 to similar to 69 nm) by varying the size of silica core. The antibacterial performance of the core-shell nanoparticles was investigated against both Gram-positive (Escherichia coli) and Gram-negative (Staphylococcus aureus) bacteria. Importantly, the nano-sized pDMAEMA particles presented antibacterial activity against both bacteria without additional quaternization due to its enlarged surface area."
According to the news editors, the research concluded: "Additionally, the bactericidal efficiency was enhanced by reducing the particle size, because the expanded surface area of the cationic polymer nanoparticles provides more active sites that can kill the bacteria."
For more information on this research see: Fabrication of pDMAEMA-coated silica nanoparticles and their enhanced antibacterial activity. Journal of Colloid and Interface Science, 2013;407():205-209. Journal of Colloid and Interface Science can be contacted at: Academic Press Inc Elsevier Science, 525 B St, Ste 1900, San Diego, CA 92101-4495, USA. (Elsevier - www.elsevier.com; Journal of Colloid and Interface Science - www.elsevier.com/wps/product/cws_home/622861)
Our news journalists report that additional information may be obtained by contacting J. Song, Seoul National University, Coll Engn, Sch Chem & Biol Engn, WCU Program Chem Convergence Energy & Environm C2, Seoul 151742, South Korea. Additional authors for this research include Y. Jung, I. Lee and J. Jang (see also Nanoparticles).
Keywords for this news article include: Asia, Seoul, South Korea, Nanotechnology, Silicon Nanocrystals, Emerging Technologies
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