Results 31 to 40 of about 85,160 (331)

Fullerene van der waals Oligomers as electron traps [PDF]

, 2014
Density functional theory calculations indicate that van der Waals fullerene dimers and larger oligomers can form interstitial electron traps in which the electrons are even more strongly bound than in isolated fullerene radical anions.
Clark, Tim, Guldi, Dirk M., Halik, Marcus, Jennepalli, Sreenu, Keller, Paul A., Pyne, Stephen G., Schubert, Christina, Sharapa, Dmitry I., Shubina, Tatyana E., Zahn, Dirk   +9 more
core   +2 more sources

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

Fabrication Methods of Fullerenes. a Critical Review Méthodes de fabrication des fullerènes. Une étude critique

Oil & Gas Science and Technology, 2006
The industrial use of fullerenes will require a significant up-scaling of their production. The five actually known techniques are discussed : 1. The electric arc (Krätschmer-Huffman). 2. The vaporization of carbon by pulsed lasers. 3.
Emberson S. C., Richter H., Fonseca A.
doaj   +1 more source

Formation of Water-Soluble Fullerenes [C60,C70] under Ultrasonication and Antioxidant Effect

Eurasian Chemico-Technological Journal, 2003
The water-soluble fullerenes [C60, C70] are prepared with fullerenes [C60, C70] and a mixture of oxidants (v/v) at the ratio of 3:1 under ultrasonic condition at room temperature.
Weon-Bae Ko, Hong-Seok Jeong, Sung-Ho Hwang   +2 more
doaj   +1 more source

Formation of a "Cluster Molecule" (C20)2 and its thermal stability

, 2006
The possible formation of a "cluster molecule" (C20)2 from two single C20 fullerenes is studied by the tight-binding method. Several (C20)2 isomers in which C20 fullerenes are bound by strong covalent forces and retain their identity are found; actually,
A. I. Podlivaev, A. I. Podlivaev, A. J. Stone, A. V. Eletskiĭ, C. H. Choi, C. H. Xu, C. Xu, H. Prinzbach, H. W. Kroto, I. Spagnolatti, I. V. Davydov, L. A. Openov, L. A. Openov, N. N. Degtyarenko, R. Ehlich, V. F. Elesin, V. F. Elesin   +16 more
core   +2 more sources

Enumeration of a class of IPR hetero-fullerenes [PDF]

Journal of the Serbian Chemical Society, 2010
Hetero-fullerenes are fullerenes in which some of the carbon atoms are replaced by other atoms. This paper uses the Pólya theorem to count the number of their possible positional isomers and chiral isomers. To do this, the computer algebra system GAP was
ALI REZA ASHRAFI, MODJTABA GHORBANI
doaj  

Modeling C540-C20 Fullerene Collisions

Reviews on Advanced Materials Science, 2018
Collisions of C20 and C540 fullerenes are studied in a wide range of velocities by means of classical molecular dynamics. The simulations show that the collision scenario strongly depends on the collision velocity of the fullerenes.
Rysaeva Leysan Kh., Lobzenko Ivan P., Baimova Julia A., Dmitriev Sergey V., Zhou Kun   +4 more
doaj   +1 more source

Predicting the new carbon nanocages, fullerynes: a DFT study

Scientific Reports, 2021
In this study, based on density functional theory, we propose a new branch of pseudo-fullerenes which contain triple bonds with sp hybridization. We call these new nanostructures fullerynes, according to IUPAC.
Mohammad Qasemnazhand, Farhad Khoeini, Farah Marsusi   +2 more
doaj   +1 more source

Structure and Stability of Two-Dimensional Complexes of C_20 Fullerenes

, 2008
Two-dimensional complexes of C_20 fullerenes connected to each other by covalent bonds have been studied. Several isomers with different types of intercluster bonds have been revealed.
A. I. Podlivaev, A. I. Podlivaev, A. I. Podlivaev, A. I. Podlivaev, A. V. Eletskiĭ, C. E. Klots, C. H. Xu, C. Xu, H. Prinzbach, H. W. Kroto, I. Spagnolatti, I. V. Davydov, I. V. Davydov, J. Jellinek, J. V. Andersen, L. A. Openov, L. A. Openov, L. A. Openov, L. A. Openov, M. Cote, R. Ehlich, Y. Wang, Z. Chen, Z. Iqbal, Z. Wang   +24 more
core   +1 more source

Improved Spectrophotometric Analysis of Fullerenes C60 and C70 in High-solubility Organic Solvents [PDF]

, 2015
Fullerenes are among a number of recently discovered carbon allotropes that exhibit unique and versatile properties. The analysis of these materials is of great importance and interest.
Belton, Daniel J., Torpe, Alexander
core   +1 more source