Single-walled carbon nanotube coated antibacterial paper: Preparation and mechanistic study

Archana R. Deokar, Lih Yuan Lin, Chun Chao Chang, Yong Chien Ling

研究成果: 雜誌貢獻文章同行評審

59 引文 斯高帕斯(Scopus)

摘要

Development of carbon nanotubes toward commercial antibacterial applications warrants the understanding of their interaction mechanism with bacterial cells. The antibacterial activity and mechanism of acid-functionalized single-walled carbon nanotube (AFSWCNT) coated paper was assessed for gram-positive Staphylococcus aureus and gram-negative Escherichia coli models of bacteria. Better activity towards gram-positive bacteria was observed, whereas the presence of an outer membrane makes gram-negative bacteria more resistant to cell membrane damage caused by AFSWCNTs. Based on measured cytoplasmic efflux materials of bacteria, X-ray photoelectron spectroscopy, and scanning transmission electron microscopy combined with electron energy-loss spectroscopy imaging studies, we found that the better antibacterial activity of AFSWCNTs toward gram-positive bacteria is attributed to not only direct physical contact and piercing action, but also molecular-scale interaction with surface functional groups of bacteria. The novel antibacterial mechanism of AFSWCNTs might bring a promising strategy to design new antibacterial materials against drug-resistant bacteria species.

原文英語
頁(從 - 到)2639-2646
頁數8
期刊Journal of Materials Chemistry B
1
發行號20
DOIs
出版狀態已發佈 - 5月 28 2013

ASJC Scopus subject areas

  • 化學 (全部)
  • 生物醫學工程
  • 醫藥 (全部)
  • 材料科學(全部)

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