Abstract
Interactions between nanodiamonds with an unmodified surface and nanodiamonds with chlorinated, as well as aminated, surfaces and the bacterium surfaces and Pseudomonas putida K12 were studied. It was revealed that only nanodiamonds with a modified surface possessed a considerable biocidal effect. Aminated nanodiamonds were twice as efficient as chlorinated ones. Electron microscopy showed that nanodiamonds were adsorbed onto the cell surface and damaged it. It is proposed that the higher biocidity of the aminated nanoparticles was caused by a positive charge inducing electrostatic interaction with the negatively charged surface of the bacterial cytoplasmic membrane.
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Original Russian Text © A.A. Isakova, A.V. Safonov, A.Yu. Alexandrovskaya, T.B. Galushko, A.V. Indenbom, B.V. Spitsyn, 2017, published in Fizikokhimiya Poverkhnosti i Zashchita Materialov, 2017, Vol. 53, No. 2, pp. 137–140.
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Isakova, A.A., Safonov, A.V., Alexandrovskaya, A.Y. et al. The effect of nanodiamond surface modification on interaction with Pseudomonas putida K12. Prot Met Phys Chem Surf 53, 220–223 (2017). https://doi.org/10.1134/S2070205117020137
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DOI: https://doi.org/10.1134/S2070205117020137