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ACS applied materials & interfaces v.9 no.2, 2017년, pp.1343 - 1351   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Wrinkled Surface-Mediated Antibacterial Activity of Graphene Oxide Nanosheets

Zou, Fengming (Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, ); Zhou, Hongjian (Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, ); Jeong, Do Young (ACI Process & Structure Development Group, Samsung Electro-Mechanics, Suwon 16674, ); Kwon, Junyoung (Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, ); Eom, Seong Un (Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, ); Park, Tae Jung (Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, ); Hong, Suck Won (Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, ); Lee, Jaebeom (Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, );
  • 초록  

    Surface wrinkles are commonly observed in large-scale of graphene films. As a new feature, the wrinkled surface of graphene films may directly affect bacterial viability by means Of various interactions of bacterial cells with graphene sheets. In the present study, we introduce a wrinkled surface geometry of graphene oxide (GO) thin films for antibacterial application. Highly wrinkled GO films were formed by vacuum filtration of a GO suspension through a prestrained filter. Several types of wrinkled GO surfaces were obtained with different roughness grades determined by root-mean-square values. Antibacterial activity of the fabricated GO films toward three different bacterial species, Escherichia coli, Mycobacterium smegmatis, and Staphylococcus aureus, was evaluated in relation to surface roughness. Because of their nanosoopically corrugated nature, the wrinkled GO films exhibited excellent antibacterial properties. On the basis of our detailed observations; we propose a novel concept of the surrounded contact-based mechanism for antimicrobial activity of wrinkled GO films. It postulates formation of a mechanically robust GO surface "trap" that prompts interaction of bacteria with the diameter-matched GO sink, which results in substantial damages to the bacterial cell membrane. We believe that our approach uncovered a novel use of a promising two-dimensional material for highly effective antibacterial treatment.


  • 주제어

    graphene oxide .   nanosheet .   antibacterial activity .   surface roughness .   molecular dynamics.  

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