Aqueous C60 Fullerene Solution Effects on Cell Viability

Fullerenes are carbon nanoparticles with the ability to quench reactive oxygen species. The biomedical potential of fullerenes is diminished by their low solubility in water, but many approaches have been developed to bypass this problem, like chemical modification of the carbon cage and the use of the solvent exchange method to transfer fullerenes from one solvent to the other. These two approaches were used in this study. Carboxylated fullerene aqueous solution was acquired using solvent exchange method transferring fullerene nanoparticles (C60) from toluene to water. Effects of varying concentration (0.5, 1, 1.5, 2, 2.5, 3, 5, 10 µM) of aqueous fullerene solution on cell viability and their antioxidative capabilities were evaluated on PC-3 and on monocytes isolated from a blood donor using Resazurin Cell Viability Assay. PC-3 cell viability was drastically affected by the 10 µM fullerene solution but remained relatively stable when treated with other concentrations even after longer periods of incubation with resazurin dye. Elevated cell viability was observed in monocytes treated with various fullerene concentrations, possibly indicative of fullerene protective activity against oxidative stress.

Tuning the electrochemical and catalytic ORR performance of C60 by its encapsulation in ZIF-8: a solid-state analogue of dilute fullerene solution

Hassle-free encapsulation of fullerene C60 in ZIF-8 has been performed to preserve the molecularity and solution-like properties of C60 in solid-state. The resulting composite shows efficient heterogeneous electrocatalytic oxygen reduction reaction.

Studies on the Effect of Anionic Surfactant on the Microemulsion System Containing [60]Fullerene

Fullerenes have potential applications in the form of microemulsion systems. Microemulsion studies with various alcohols as co-surfactants reveals that as the co-surfactant was changed from propanol to octanol, the water quantity in the microemulsion was less when [60]fullerene was present in the oil. The microemulsion region increases when [ 60]fullerene is present along with co-surfactants like propanol, butanol and pentanol and decreases when hexanol and octanol were present. The thermodynamic properties (ΔG°, ΔH° and ΔS°) of reverse micellisation of SDS in toluene-[60]fullerene solution at 30ºC and 40ºC were calculated and the results show that though there is no significant change in the overall ΔG°, there was significant decrease in the enthalpic interactions with a corresponding increase in the entropy for reverse micellization in toluene. The values of ΔG°, ΔH° and ΔS° are negative indicating the spontaneous and exothermic formation of a reverse micelle.

Polymer fullerene solution phase behaviour and film formation pathways

We report the phase behaviour of polymer/fullerene/solvent ternary mixtures and its consequence for the morphology of the resulting composite thin films.

Solution and air stable host/guest architectures from a single layer covalent organic framework

Single-layer COF-1 hosts fullerene guests, which can be introduced by a brief immersion in fullerene solution.