| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gengenbach, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Interpretation of Complex X-ray Photoelectron Peak Shapes Part II: Case Study of Fe 2p3/2 fitting applied to Austenitic Stainless Steels 316 and 304.citations
- 2020Covalent sizing surface modification as a route to improved interfacial adhesion in carbon fiber-epoxy compositescitations
- 2020Investigating the real-time dissolution of a compositionally complex alloy using inline ICP and correlation with XPScitations
- 2020Real-time dissolution of a compositionally complex alloy using inline ICP and correlation with XPScitations
- 2020Improving the Stability of Ambient-Processed SnO2-Based, Perovskite Solar Cells by UV-Treatment of the Sub-Cellscitations
- 2020Improving the Stability of Ambient processed, SnO2-Based, Perovskite Solar Cells by the UV-treatment of Sub-Cellscitations
- 2019Electrocatalytic CO2 reduction to formate on Cu based surface alloys with enhanced selectivitycitations
- 2019Fiber with Butterfly Wings: Creating Colored Carbon Fibers with Increased Strength, Adhesion, and Reversible Malleabilitycitations
- 2018Morphology and surface properties of high strength siloxane poly(urethane-urea)s developed for heart valve applicationcitations
- 2017Limitations with solvent exchange methods for synthesis of colloidalfullerenescitations
- 2017Reduction of surface fat formation on spray-dried milk powders through emulsion stabilization with λ-carrageenancitations
- 2016Effect of the deformability of guest particles on the tensile strength of tablets from interactive mixturescitations
- 2014Water-dispersible magnetic carbon nanotubes as T2-weighted MRI contrast agentscitations
- 2012One step multifunctional micropatterning of surfaces using asymmetric glow discharge plasma polymerisation
- 2011Characterization of the surface properties of a model pharmaceutical fine powder modified with a pharmaceutical lubricant to improve flow via a mechanical dry coating approachcitations
Places of action
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article
Limitations with solvent exchange methods for synthesis of colloidalfullerenes
Abstract
We have demonstrated that the use of tetrahydrofuran (THF) as a solvent to produce dispersed, water soluble fullerenes results in significant oxidation and degradation of the fullerene cage, which has not been reported previously. We also report a new finding that the use of N, N-dimethylformamide (DMF) can also generate stabilised fullerene (C60) nanoparticle dispersions in aqueous solutions including water and phosphate buffered saline (PBS) buffer. We compare this new DMF method with the well-known THF method following an extensive chemical and physical analysis of the resulting nanoparticles. The exact mechanism of action behind this oxidation and degradation is unknown, however, the role of peroxides is likely. The method of solvent exchange based on the use of DMF results in the formation of fullerene nanoparticle agglomerates that are highly stable in PBS and water, while the THF agglomerates are only stable in water. However, caution should be applied when using these approaches due to the significant degradation of the fullerene cage observed when using various techniques such as dynamic light scattering (DLS), matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF), X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H NMR) and cryo transmission electron microscopy (cryo-TEM). Our results show that the solvent exchange technique using THF results in partial oxida-tion and degradation of C60, interestingly, the DMF evaporative method results in greater oxidation and degradation of C60 but significantly enhanced colloidal stability in buffer.