Results 21 to 30 of about 15,410 (259)

Fullerene derivatives and fullerene superconductors [PDF]

Journal of Physics and Chemistry of Solids, 1993
Abstract A series of 1:1 C 60 cycloaddition adducts, C 60 A (A = anthracene, butadiene, cyclopentadiene and methylcyclopentadiene), has been synthesized. The products are cleanly separated and characterized by use of TGA, 1 H-NMR, IR, and mass spectrometry. Among these adducts, C 60 , (methylcyclopentadiene) showed the highest thermal stability and
Wang, H. H., Schlueter, J. A., Cooper, A. C., Smart, J. L., Whitten, M. E., Geiser, U., Carlson, K. D., Williams, J. M., Welp, U., Dudek, J. D., Caleca, M. A.   +10 more
openaire   +1 more source

Chemistry of Fullerene Epoxides: Synthesis, Structure, and Nucleophilic Substitution-Addition Reactivity

Molecules, 2012
Fullerene epoxides, C₆₀O_n, having epoxide groups directly attached to the fullerene cage, constitute an interesting class of fullerene derivatives.
Yusuke Tajima, Yasuo Shigemitsu, Kazumasa Takeshi, Youhei Numata   +3 more
doaj   +1 more source

Occurrence of natural fullerene C60 from the iridium-rich Cretaceous-Paleogene (K-Pg) boundary layers of the Um-Sohryngkew river section, Meghalaya, India

Carbon Trends, 2023
The presence of fullerene C60 in the iridium-rich Cretaceous-Palaeogene (K-Pg) boundary layer from the Um-Sohryngkew river section of Meghalaya is reported here for the first time. Different analytical methods, including transmission electron microscopy (
Bhaskar J. Saikia, G. Parthasarathy, Binoy K. Saikia, Rashmi R. Borah   +3 more
doaj   +1 more source

Fullerene Black: Relationship between Catalytic Activity in n-alkanes Dehydrocyclization and Reactivity in Oxidation, Bromination and Hydrogenolysis

Eurasian Chemico-Technological Journal, 2001
The reactivity of fullerene black in oxidation (by air oxygen or ions MnO4–or Cr2O7 2– in solution), bromination (by Br2 or (C4H9)4NBr3) and hydrogenolysis (without hydrogenation catalyst) are studied.
S. D. Kushch, P. V. Fursikov, N. S. Kuyunko, A. V. Kulikov, V. I. Savchenko   +4 more
doaj   +1 more source

Fullerenes: Characteristics of the substance, biological effects and occupational exposure levels

Medycyna Pracy, 2016
Fullerenes are molecules composed of an even number of carbon atoms of a spherical or an ellipsoidal, closed spatial structure. The most common fullerene is the C60 molecule with a spherical structure – a truncated icosahedron, compared to a football ...
Anna Maria Świdwińska-Gajewska, Sławomir Czerczak   +1 more
doaj   +1 more source

Biogenic fullerenes?

International Journal of Astrobiology, 2003
If the discoveries of C60 and C70 fullerenes in terrestrial hard rocks are real, then some of these may have formed in the solid state by dehydrogenation-driven ‘zip-up’ of C60Hn and C70Hm progenitors. At three sites of such fullerene discoveries the building blocks for these large molecules may have come from algal remains.
Heymann, D., Jenneskens, L.W., Jehlička, J., Koper, C., Vlietstra, E.J.   +4 more
openaire   +3 more sources

Computational Computation of the Efferene Structure on the Para phenylene diamine [PDF]

International Journal of New Chemistry, 2017
In this study, the effect of fullerene electron mobility on the composition of paraphenylenediamine and stability was studied. Using quantum chemistry calculations, the first combination of paraffenylenediamine in a single-full-time region connected with
Shohreh Maleki
doaj   +1 more source

Fullerene C60 nanoparticles potentiate the antioxidant defense system of brain and liver by increment of catalase activity in normal rats [PDF]

Novelty in Clinical Medicine, 2023
Background: It has been demonstrated that fullerene C60 nanoparticles and their derivatives showed the antioxidant properties in a wide range of the in vitro and in vivo studies.Objectives: Hence, we examined the effects of oral administration of ...
Fariba Namdar, Shima Shahyad, Mohammad Taghi Mohammadi   +2 more
doaj   +1 more source

Effect of self-assembly of fullerene nano-particles on lipid membrane. [PDF]

PLoS ONE, 2013
Carbon nanoparticles can penetrate the cell membrane and cause cytotoxicity. The diffusion feature and translocation free energy of fullerene through lipid membranes is well reported.
Saiqun Zhang, Yuguang Mu, John Z H Zhang, Weixin Xu   +3 more
doaj   +1 more source

Functionalization of Graphene by π–π Stacking with C₆₀/C₇₀/Sc₃N@C₈₀ Fullerene Derivatives for Supercapacitor Electrode Materials

C, 2022
Non-covalent modification of graphene is one of the strategies used for enhancing its energy storage properties. Herein, we report the design and synthesis of a series of fullerene derivatives that are capable of assembly on graphene sheets by π–π ...
Piotr Piotrowski, Agata Fedorczyk, Jacek Grebowski, Agnieszka Krogul-Sobczak   +3 more
doaj   +1 more source