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...
Gespeichert in:
Hauptverfasser: | , , , , , , , , , |
---|---|
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
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 |