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Chemistry: Giant hyperthermal effect in Mg-doped Fe3O4 - Friday, 09 February 2018 11:36
Biology: Nanodiamonds for antibacterial implants - Monday, 02 November 2015 21:41
Ecology: Nano-products risks overexaggerated - Tuesday, 24 June 2014 11:02

nanodiamonds bactericide acs nano 2014Materials scientists from Bremen and Stanford have shown that nanodiamonds are an effective bacteria killer, the article was recently published in ACS Nano.


Nanodiamonds are tiny diamond crystals of a diameter of 5 nanometers, about 200 times smaller than a bacterium. A group of scientists from Bremen and Stanford University identified the strong antibacterial properties of these nanodiamonds. In addition to silver and copper, the diamond could be used as new effective agent against bacterial infections.


Nanodiamonds were discovered in the 1960s by Russian scientists, but only recently became widely acknowledged for their extraordinary properties. The surface of these particles can be modified with various chemical groups. The biologist Julia Wehling and the chemist and project manager Dr. Michael Maas found that some types of nanodiamonds are extremely effective against both Gram-positive and negative bacteria. In an exciting research, the scientists identified that certain oxygen-containing groups on the surfaces of nanodiamonds (acid anhydrides) are responsible for the antibacterial activity of the particles.
"The comprehension that nanodiamonds are similarly effective in killing bacteria as silver opens up a variety of possible applications in the field of medical technology and materials science. At the same time we see that the nanodiamonds used at the concentration tested are not toxic to human cells. Thus, coatings of surfaces or the addition of nanodiamond to disinfectants becomes feasible. In the era of antibiotic resistance, the discovery of a novel antibacterial material is a breakthrough", emphasizes Julia Wehling the importance of the discovery.
The project manager Dr. Michael Maas became aware of nanodiamonds during his visit at Stanford University in California in his conversation with Professor Richard N. Zare. "Upon my return, we have begun to use nanodiamonds in various nano-systems, which we examined in Bremen. We were surprised at how efficient they were in killing bacteria. It is obvious that in the nearest future these particles will play an important role as an antibacterial material. Our next goal is to test the nanodiamonds as an additive to implants, thus providing them antiseptic properties. Parallel to this a more detailed characterization of the nanodiamond surface will be performed."

Details of this research is available in the original publication that appeared online end of May 2014.

Similar articles on the topic:
Nanotechnology for drug delivery shows promise in treatment of pediatric leukemia

Link to the nanodiamonds used in the study: PlasmaChem

Image courtesy: ACS Nano

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Comments   

 
0 #1 Jack Aarchi 2014-07-04 16:25
I read about DIAMONDOID MOLECULES which are the rising stars among molecular building blocks for biomedicine, materials science and nanotechnology in this new book just published: http://www.uic.edu/labs/trl/Diamondoids/Dia.html
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