By a News Reporter-Staff News Editor at Nanotechnology Business Journal -- Fresh data on Electrolytes are presented in a new report. According to news originating from Ithaca, New York, by VerticalNews correspondents, research stated, "Nanoscale ionic materials (NIMs) are organic-inorganic hybrids prepared from ionically functionalized nanoparticles (NP) neutralized by oligomeric polymer counterions. NIMs are designed to behave as liquids under ambient conditions in the absence of solvent and have no volatile organic content, making them useful for a number of I applications."
Our news journalists obtained a quote from the research from Cornell University, "We have used nuclear magnetic resonance relaxation and pulsed-field gradient NMR to probe local and collective canopy dynamics in NIMs based on 18-nm silica NPs with a covalently bound anionic corona, neutralized by amine-terminated ethylene oxide/propylene oxide block copolymers. The NMR relaxation studies show that the nanosecond-scale canopy dynamics depend on the degree of neutralization, the canopy radius of gyration, and crowding at the ionically modified NP surface. Two canopy populations are observed in the diffusion experiments, demonstrating that one fraction of the canopy is bound to the NP surface on the time scale (milliseconds) of the diffusion experiment and is surrounded by a more mobile layer of canopy that is unable to access the surface due to molecular crowding. The introduction of electrolyte ions (Na+ or Mg2+) screens the canopy-corona electrostatic interactions, resulting in a reduced bulk viscosity and faster canopy exchange."
According to the news editors, the research concluded: "The magnitude of the screening effect depends upon ion concentration and valence, providing a simple route for tuning the macroscopic properties of NIMs."
For more information on this research see: Hierarchical Canopy Dynamics of Electrolyte-Doped Nanoscale Ionic Materials. Macromolecules, 2013;46(24):9669-9675. Macromolecules can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Macromolecules - www.pubs.acs.org/journal/mamobx)
The news correspondents report that additional information may be obtained from M.L. Jespersen, Cornell University, Sch Appl & Engn Phys, Ithaca, NY 14853, United States. Additional authors for this research include P.A. Mirau, E.D. von Meerwall, H. Koerner, R.A. Vaia, N.J. Fernandes and E.P. Giannelis.
Keywords for this news article include: Ithaca, New York, Nanoscale, Electrolytes, United States, Nanotechnology, Inorganic Chemicals, Emerging Technologies, North and Central America
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