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Antibacterial activity of large-area monolayer graphene film manipulated by charge transfer
Open accessAbstract
Graphene has attracted increasing attention for potential applications in biotechnology due to its excellent electronic property and biocompatibility. Here we use both Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) to investigate the antibacterial actions of large-area monolayer graphene film on conductor Cu, semiconductor Ge and insulator SiO2. The results show that the graphene films on Cu and Ge can surprisingly inhibit the growth of both bacteria, especially the former. However, the proliferation of both bacteria cannot be significantly restricted by the graphene film on SiO2. The morphology of S. aureus and E. coli on graphene films further confirms that the direct contact of both bacteria with graphene on Cu and Ge can cause membrane damage and destroy membrane integrity, while no evident membrane destruction is induced by graphene on SiO2. From the viewpoint of charge transfer, a plausible mechanism is proposed here to explain this phenomenon. This study may provide new insights for the better understanding of antibacterial actions of graphene film and for the better designing of graphene-based antibiotics or other biomedical applications.
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Metadata
- Authors
- Li, J., Wang, G., Zhu, H., Zhang, M., Zheng, X., Di, Z., Liu, X., & Wang, X.
- Venue
- Scientific Reports
- Published
- 2014-03-12
- Volume
- 4
- Issue
- 1
- Pages
- 4359-4359
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W2107492786
- Cited by
- 447
- References
- 34
- FWCI
- 16.39
- Type
- journal article
- Language
- en
- Open access
- gold
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