39 research outputs found
On the origin of C₆₀ fullerene solubility in aqueous solution
In this work, we report that the surface hydroxylation of C₆₀ molecules is the most likely mechanism for pristine C₆₀ fullerenes/C₆₀ fullerene aggregate stabilization in water, being independent of the method of C₆₀ fullerene aqueous solution preparatio
PMR characterization of the water structure in tibetan milk mushroom zooglea: influence of medium hydration and hydrophobicity
The state of water in Tibetan milk mushroom zooglea with different degrees of hydration (h) was investigated using low-temperature PMR spectroscopy in air and in contact with the hydrophobic media polydimethylsiloxane PDMS-1000 and CHCl3 with added trifl uoroacetic acid (TFA). The maximum hydration of the zooglea amounted to h = 32 g/g (of dry matter). Water existed as polyassociates (clusters or domains) of strongly and weakly associated water. Bound water decomposed into clusters in the presence of TFA. The NMR spectra showed six types of bound water at h = 0.3 g/
Fractal C60 fullerene aggregation: Equilibrium thermodynamics approach
Using dynamic light scattering (DLS) data we showed that the main physico-chemical parameters characterizing C60 fullerene aggregation in solution, viz. equilibrium aggregation constant and fractal number, may be obtained from equilibrium thermodynamics approac
Influence of C(60) fullerene on the ischemia-reperfusion injury in the skeletal muscle of rat limb: mechanokinetic and biochemical analysis
Influence of the pristine C60 fullerene aqueous colloidal solution (C60FAS) on the ischemia-reperfusion injury in the skeletal muscle of rat limb was studied. Skeletal muscle damage effects were induced by 3 h lasting vascular ischemia. The impact of C60FAS was studied after its intramuscular injection immediately after 1 h of reperfusion at different doses, namely: 1, 2 and 3 mg/kg of body weight. Changes in the mechanokinetic parameters of ischemic skeletal muscle contraction at different modes of functioning and biochemical parameters of blood were used as markers of ischemic injury, and analyzed in detail under action of C60FAS. The obtained results indicate on great promise of use of C60FAS to reduce the consequences of ischemic muscle trauma
Magnetometric Studies of Catalyst Refuses in Nanocarbon Materials
It is shown that magnetometry can be employed as an effective tool to control the content of a ferromagnetic constituent in nanocarbon materials. We propose a thermochemical treatment protocol to achieve extensive cleaning of the source nanocarbon materials from ferromagnetic refuses