نتایج جستجو برای: lopressor fullerenes
تعداد نتایج: 3611 فیلتر نتایج به سال:
Graphene oxide (GO) and C60 - or C60 -TRIS fullerenes, internalized by murine dendritic cells (DCs), differently affect their abilities to present antigens to T-cells. While C60 -fullerenes stimulate the ovalbumin-specific MHC class I-restricted T-cell response, GO impairs the stimulatory potential of DCs. In contrast to C60 -fullerenes, GO decreases the intracellular levels of LMP7 immunoprote...
ABSTRACT Several works on nonclassical fullerenes with heptagons have mainly considered the case with just one heptagon. In this context the isolated pentagon rule is not satisfied. The study of nonclassical fullerenes is important because some of them are more stable than the corresponding classical isomers with the same number of pentagonal bonds. We present several nonclassical fullerenes wi...
For each d > 0, we find all the smallest fullerenes for which the least distance between two pentagons is d. We also show that for each d there is an hd such that fullerenes with pentagons at least distance d apart and any number of hexagons greater than or equal to hd exist. We also determine the number of fullerenes where the minimum distance between any two pentagons is at least d, for 1 ≤ d...
Like beads on a string: A synthetic method for the directional construction of strings of spherical fullerenes along stacks of planar oligothiophenes is described. The key to success was the preparation of fullerenes with two solubilizing tri(ethylene glycol) tails (bold) and an aromatic aldehyde for covalent capture by hydrazides along the oligothiophene stacks (red). BOLAG, Alatengbaolige, et...
Growth experiments of transplanted malignant tumors in the presence of water-soluble C60 fullerenes were performed on groups of mice. It was found that C60 fullerenes efficiently inhibit the growth of transplanted malignant tumors. This behavior can be explained through their high antioxidant activity and the blocking of the specific cell receptors (for example, endothelial growth factor). The ...
The most abundant fullerenes, C60 and C70, and all the pure-carbon fullerenes larger than C70 synthesized so far follow the isolated-pentagon rule (IPR). Fullerenes containing adjacent pentagons (APs) are less stable due to the additional strain. Surprisingly, recent experiments have shown that a few endohedral fullerenes, for which IPR structures are possible, hence expected to be the most sta...
Fullerenes are a class of novel carbon allotropes that may have practical applications in biotechnology and medicine. Human mast cells (MC) and peripheral blood basophils are critical cells involved in the initiation and propagation of several inflammatory conditions, mainly type I hypersensitivity. We report an unanticipated role of fullerenes as a negative regulator of allergic mediator relea...
We compare the solar cell performance of several polymers with the conventional electron acceptor phenyl-C61-butyric acid methyl ester (PCBM) to fullerenes with one to three indene adducts. We find that the multiadduct fullerenes with lower electron affinity improve the efficiency of the solar cells only when they do not intercalate between the polymer side chains. When they intercalate between...
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