Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteriaElectronic supplementary information (ESI) available. See DOI: 10.1039/c8ra04664f

Due to controversial reports concerning antibacterial activity of different graphene based materials it is very important to investigate their antibacterial action on a wide range of Gram-positive and Gram-negative bacteria. In this paper we have investigated the structure induced phototoxic antibac...

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Hauptverfasser: Markovi, Zoran M, Jovanovi, Svetlana P, Maškovi, Pavle Z, Danko, Martin, Mi ušík, Matej, Pavlovi, Vladimir B, Milivojevi, Dušan D, Kleinová, Angela, Špitalský, Zdeno, Todorovi Markovi, Biljana M
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Sprache:eng
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Zusammenfassung:Due to controversial reports concerning antibacterial activity of different graphene based materials it is very important to investigate their antibacterial action on a wide range of Gram-positive and Gram-negative bacteria. In this paper we have investigated the structure induced phototoxic antibacterial activity of four types of graphene based materials: graphene oxide (GO), graphene quantum dots (GQDs), carbon quantum dots (CQDs) and nitrogen doped carbon quantum dots (N-CQDs). Antibacterial activity was tested on 19 types of bacteria. It is found that nanometer-size CQDs and N-CQDs are the most potent agents whereas micrometer-size GO has very poor antibacterial activity. Electron paramagnetic resonance measurements confirmed photodynamic production of singlet oxygen for all types of used quantum dots. Detailed analysis has shown that N-CQDs are an excellent photodynamic antibacterial agent for treatment of bacterial infections induced by Enterobacter aerogenes ( E. aerogenes ), Proteus mirabilis ( P. mirabilis ), Staphylococcus saprophyticus ( S. saprophyticus ), Listeria monocytogenes ( L. monocytogenes ), Salmonella typhimurium ( S. typhimurium ) and Klebsiella pneumoniae . Antibacterial potentials of four graphene based nanomaterials are tested on a wide range of bacteria.
ISSN:2046-2069
DOI:10.1039/c8ra04664f