Non-covalent modified multi-walled carbon nanotubes: Dispersion capabilities and interactions with bacteria
Khazaee M, Ye D, Majumder A, Baraban L, Opitz J, Cuniberti G (2016)
Publication Type: Journal article
Publication year: 2016
Journal
Book Volume: 2
Article Number: 055008
Journal Issue: 5
DOI: 10.1088/2057-1976/2/5/055008
Abstract
Antimicrobial activity of surfactant-modified multi-walled carbon nanotubes (MWCNTs) was investigated by analyzing the growth curves of an Escherichia coli (E. coli) population in ionic and nonionic surfactant-modified MWCNTs in Luria Bertani (LB) broth. The ionic surfactants (sodium dodecylbenzenesulfonate (SDBS), sodium cholate (SC), dodecyltrimethylammonium bromide (DTAB), cetyltrimethylammonium bromide (CTAB)) as well as a non-ionic polyvinylpyrrolidone (PVP) were used to test the dispersion and resulting antimicrobial effect ofMWCNTsby means of UV-vis spectroscopy and optical density (OD) measurement. Among these surfactants, SDBS and DTAB provided maximum and minimum MWCNT dispersion, respectively. Furthermore, the biocompatibility issues with respect to dispersion capabilities of the ionic and non-ionic surfactants is discussed in detail, as a source of potential misinterpretation of the obtained growth curves of E. coli and thus, their antimicrobial effect. Finally, scanning electron microscopy was used to study the interaction of well-dispersed MWCNTs with the E. coli cells.
Involved external institutions
Germany (DE)How to cite
APA:
Khazaee, M., Ye, D., Majumder, A., Baraban, L., Opitz, J., & Cuniberti, G. (2016). Non-covalent modified multi-walled carbon nanotubes: Dispersion capabilities and interactions with bacteria. Biomedical Physics and Engineering Express, 2(5). https://dx.doi.org/10.1088/2057-1976/2/5/055008
MLA:
Khazaee, Maryam, et al. "Non-covalent modified multi-walled carbon nanotubes: Dispersion capabilities and interactions with bacteria." Biomedical Physics and Engineering Express 2.5 (2016).
BibTeX: Download