By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Fullerenes have been published. According to news reporting originating from Tehran, Iran, by NewsRx correspondents, research stated, "The insolubility of carbon nanotubes (CNTs) in aqueous media has been a limitation for the practical application of this unique material. Recent studies have demonstrated that the suspend ability of CNT can be substantially improved by employing appropriate surfactants."
Our news editors obtained a quote from the research from the Iran University of Science and Technology, "Although various surfactants have been tested, the exact mechanism by which carbon nanotubes and the different surfactants interact is not fully understood. To deepen the understanding of molecular interaction between CNT and surfactants, as well as to investigate the influence of the surfactant tail length on the adsorption process, we report here the first detailed large-scale all-atomistic molecular dynamics simulation study of the adsorption and morphology of aggregates of the cationic surfactants containing trimethylammonium headgroups (C(12)TAB and C(16)TAB) on single-walled carbon nanotube (SWNT) surfaces. We find that the aggregation morphology of both C(12)TAB and C(16)TAB on the SWNT is dependent upon the number of the surfactants in the simulation box. As the number of the surfactants increases the random monolayer structure gradually changes to the cylinder-like monolayer structure. Moreover, we make a comparison between the C(12)TAB and C(16)TAB adsorption onto SWNTs to clarify the role of the surfactant tail length on the adsorption process. This comparison indicates that by increasing the number of surfactant molecules, the larger number of the C(16)TAB molecules tend to adsorb onto SWNTs."
According to the news editors, the research concluded: "Further, our results show that a longer chain yields the higher packed aggregates in which the surfactant heads are extended far into the aqueous phase, which in turn may increase the SWNTs stabilization in aqueous suspensions."
For more information on this research see: Self-assembly of cationic surfactants on the carbon nanotube surface: insights from molecular dynamics simulations. Journal of Molecular Modeling, 2013;19(10):4319-4335. Journal of Molecular Modeling can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA. (Springer - www.springer.com; Journal of Molecular Modeling - www.springerlink.com/content/1610-2940/)
The news editors report that additional information may be obtained by contacting N. Poorgholami-Bejarpasi, Iran Univ Sci & Technol, Surface Chem Res Lab, Dept. of Chem, Tehran, Iran (see also Fullerenes).
Keywords for this news article include: Iran, Asia, Tehran, Physics, Fullerenes, Nanotechnology, Carbon Nanotubes, Molecular Dynamics, Emerging Technologies
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2013, NewsRx LLC