Bibliografías temáticas / Fullerene

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Literatura académica sobre el tema "Fullerene"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 25 de mayo de 2024

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Artículos de revistas sobre el tema "Fullerene"

1

Lin, Hao-Sheng y Yutaka Matsuo. "Functionalization of [60]fullerene through fullerene cation intermediates". Chemical Communications 54, n.º 80 (2018): 11244–59. http://dx.doi.org/10.1039/c8cc05965a.

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Fullerene cations, namely [60]fullerene radical cation (C60˙+) and organo[60]fullerenyl cation (RC60+), open paths for the efficient derivatization of a great variety of fullerenes.
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2

Lun-Fu, Aleksandr V., Alexey M. Bubenchikov, Mikhail A. Bubenchikov y Vyacheslav A. Ovchinnikov. "Numerical Simulation of Interaction between Kr+ Ion and Rotating C60 Fullerene towards for Nanoarchitectonics of Fullerene Materials". Crystals 11, n.º 10 (6 de octubre de 2021): 1204. http://dx.doi.org/10.3390/cryst11101204.

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Dynamics of charged fullerene in a surface layer of fullerite is studied under the influence of neutral or charged particles of the gas phase surrounding the fullerite material. The translational displacements of the nodes of the crystal lattice structure are determined by the equations of motion of the centers of mass of fullerenes. Central fullerene, which is described as a discrete set of sixty carbon atoms, plays a special role in the presented mathematical model. Angular oscillations and rotations of the central fullerene are described by the dynamic Euler equations. All other fullerenes have a centrally symmetric field of the potential of interaction with the surrounding atoms and molecules. In this regard, we use the hybrid discrete–continuous mathematical model with four potentials that describe the interactions between the surrounding fullerenes, smoothed fullerene and an atom, a pair of atoms, and electric charges. The results of a numerical study of influence of the Coulomb interaction on the rotational and translational motion of the C60 fullerene are presented.
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3

Pacor, Sabrina, Alberto Grillo, Luka Đorđević, Sonia Zorzet, Marianna Lucafò, Tatiana Da Ros, Maurizio Prato y Gianni Sava. "Effects of Two Fullerene Derivatives on Monocytes and Macrophages". BioMed Research International 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/915130.

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Two fullerene derivatives (fullerenes1and2), bearing a hydrophilic chain on the pyrrolidinic nitrogen, were developed with the aim to deliver anticancer agents to solid tumors. These two compounds showed a significantly different behaviour on human neoplastic cell linesin vitroin respect to healthy leukocytes. In particular, the pyrrolidinium ring on the fullerene carbon cage brings to a more active compound. In the present work, we describe the effects of these fullerenes on primary cultures of human monocytes and macrophages, two kinds of immune cells representing the first line of defence in the immune response to foreign materials. These compounds are not recognized by circulating monocytes while they get into macrophages. The evaluation of the pronecrotic or proapoptotic effects, analysed by means of analysis of the purinergic receptor P2X7 activation and of ROS scavenging activity, has allowed us to show that fullerene2, but not its analogue fullerene1, displays toxicity, even though at concentrations higher than those shown to be active on neoplastic cells.
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Suvorov, S. V., A. V. Severiuchin y A. V. Vakhrushev. "The effect of the angle of «meeting» of fullerite C60 with a solid substrate on the deposition process". PNRPU Mechanics Bulletin, n.º 3 (15 de diciembre de 2020): 90–97. http://dx.doi.org/10.15593/perm.mech/2020.3.09.

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Carbon forms a large number of allotropic forms, one of which is fullerene. Fullerene is a convex closed polyhedron with carbon atoms at its vertices. The most common is fullerene, consisting of 60 carbon atoms and designated - C60. In turn, fullerenes are able to agglomerate, forming a molecular crystal - fullerite. In the interaction of fullerite C60 with a solid, it is possible to deposit on the surface of the body both whole fullerite and the fullerenes that form it. The interaction process in the C60 fullerite system - the substrate of a solid, and then on - the fullerite - substrate system - is multi-parameter. So, when modeling the interaction of fullerite with a substrate, the following were taken into account: the temperature of the system - 300, 700, 1150 K; the speed of fullerite movement is 0.005, 0.01, 0.02 Å / fs. In addition, in the study, we varied the angle between the fullerite velocity vector and the normal to the contact surface of the substrate, called the “meeting angle”. An iron crystal Fe (100) was modeled as a solid body substrate, as one of the most common structural materials. Fullerite C60 was in contact with the solid substrate with its face. Computer simulation of the process of contact of fullerite C60 with the substrate was carried out in the LAMMPS software package. The main result of this study is to determine the effect of the angle of “meeting” of C60 fullerite in contact with a solid substrate, which will significantly complement the overall picture of the process of C60 fullerite deposition. In turn, this can allow the creation of various films and wear-resistant coatings on the surface of materials.
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Bubenchikov, Alexey, Mikhail Bubenchikov, Dmitriy Mamontov y Alexandr Lun-Fu. "Md-Simulation of Fullerene Rotations in Molecular Crystal Fullerite". Crystals 9, n.º 10 (25 de septiembre de 2019): 496. http://dx.doi.org/10.3390/cryst9100496.

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The present paper describes rotations of C60 fullerene molecules in the solid phase of a fullerite. The conducted studies show that these relatively large molecules rotate according to the same laws as macroscopic bodies, i.e., according to the laws of classical mechanics. The performed calculations confirm that fullerene rotations do not cause friction. We suggest a method for a strong increase in the internal energy of the material that does not lead to its destruction. It is theoretically shown that in standard fullerite, in the absence of electric and magnetic fields, fullerene rotations occur with an average angular frequency of 0.34·× 1012 rad·s−1, which is consistent with the experimental data obtained using nuclear magnetic resonance. By means of calculations, we found that alternating magnetic fields of a certain configuration wind fullerenes encapsulated by iron. In this case, two temperatures arise in the fullerite crystal: a high rotational temperature and a vibrational temperature close to normal. For the purpose of determining this velocity, as well as the nature of rotations, the present paper suggests a way of integrating the dynamic Euler equations for the projections of a molecule’s angular velocity vector onto the coordinate axes associated with the fullerene. The stages of computer simulation of fullerene movements, which was carried out without using previously developed packages of molecular-dynamic modelling, are consistently described.
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Sabirov, Denis Sh. "Polarizability as a landmark property for fullerene chemistry and materials science". RSC Adv. 4, n.º 85 (2014): 44996–5028. http://dx.doi.org/10.1039/c4ra06116k.

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The review summarizes data on dipole polarizability of fullerenes and their derivatives, covering the most widespread classes of fullerene-containing molecules (fullerenes, fullerene exohedral derivatives, fullerene dimers, endofullerenes, fullerene ions, and derivatives with ionic bonds).
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7

Chen, Guoping, Lok Kumar Shrestha y Katsuhiko Ariga. "Zero-to-Two Nanoarchitectonics: Fabrication of Two-Dimensional Materials from Zero-Dimensional Fullerene". Molecules 26, n.º 15 (30 de julio de 2021): 4636. http://dx.doi.org/10.3390/molecules26154636.

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Nanoarchitectonics of two-dimensional materials from zero-dimensional fullerenes is mainly introduced in this short review. Fullerenes are simple objects with mono-elemental (carbon) composition and zero-dimensional structure. However, fullerenes and their derivatives can create various types of two-dimensional materials. The exemplified approaches demonstrated fabrications of various two-dimensional materials including size-tunable hexagonal fullerene nanosheet, two-dimensional fullerene nano-mesh, van der Waals two-dimensional fullerene solid, fullerene/ferrocene hybrid hexagonal nanosheet, fullerene/cobalt porphyrin hybrid nanosheet, two-dimensional fullerene array in the supramolecular template, two-dimensional van der Waals supramolecular framework, supramolecular fullerene liquid crystal, frustrated layered self-assembly from two-dimensional nanosheet, and hierarchical zero-to-one-to-two dimensional fullerene assembly for cell culture.
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8

Manchado, A., J. J. Díaz-Luis, D. A. García-Hernández y F. Cataldo. "A Catalog of Diffuse Interstellar Bands in Fullerene-Containing Planetary Nebulae". Proceedings of the International Astronomical Union 9, S297 (mayo de 2013): 223–25. http://dx.doi.org/10.1017/s1743921313015901.

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AbstractLarge fullerenes and fullerene-based molecules have been proposed as carriers of diffuse interstellar bands (DIBs). The recent detection of the most common fullerenes (C60 and C70) around some Planetary Nebulae (PNe) now enable us to study the DIBs in fullerene-rich space environments. We have studied the presence of DIBs in the optical spectra (~3300-9400 Å) of two fullerene-containing PNe (Tc 1 and M 1-20). Special attention is given to DIBs which are found to be unusually intense in fullerene-containing PNe; several of these DIBS have not previously been reported. Fullerenes larger than C60 (and C70) and multishell fullerenes may be possible candidate carriers for the unusual DIBs seen in fullerene-rich environments.
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Iyoda, Masahiko, Hideyuki Shimizu, Shinobu Aoyagi, Hiroshi Okada, Biao Zhou y Yutaka Matsuo. "Structures and properties of Saturn-like complexes composed of oligothiophene macrocycle with methano[60]fullerene and [70]fullerene". Canadian Journal of Chemistry 95, n.º 3 (marzo de 2017): 315–19. http://dx.doi.org/10.1139/cjc-2016-0461.

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π-Expanded oligothienylene macrocycle with a large inner cavity incorporates fullerenes such as methano[60]fullerene (C61H2) and [70]fullerene (C70) inside to form Saturn-like complexes. Although the oligothiophene macrocycle weakly interacts with fullerenes in solution, it forms stable Saturn-like fullerene complexes in the solid state. X-ray analysis of the Saturn-like complexes exhibited short contacts between the sulfur atoms of the oligothiophene macrocycle and fullerene carbons, which hinder the rotation of fullerenes. As a result, the non-covalent interaction between the oligothiophene macrocycle and fullerenes was employed in crystal structure determination of fullerenes. UV–vis–NIR spectra of the Saturn-like complexes showed weak donor–acceptor interaction between the oligothiophene macrocycle and fullerenes.
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Cataldo, F., D. A. García-Hernández, A. Manchado y S. Iglesias-Groth. "Spectroscopy of Fullerenes, Fulleranes and PAHs in the UV, Visible and Near Infrared Spectral Range". Proceedings of the International Astronomical Union 9, S297 (mayo de 2013): 294–96. http://dx.doi.org/10.1017/s1743921313016025.

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AbstractThe spectra of fullerenes C60 and C70, higher fullerenes C76, C78 and C84 and hydrogenated fullerenes (fulleranes) were studied in laboratory in the UV and in the visible spectral range and could be used for searching and recognizing these molecules in space. Furthermore, the radical cation spectra of all the mentioned fullerene series and also of a series of large and very large polycyclic aromatic hydrocarbons (PAHs) were generated in the laboratory and studied in the near infrared spectral range.
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Tesis sobre el tema "Fullerene"

1

Dybek, Aneta. "Production and Characterisation of Fullerenes, Fullerene Derivatives and Fullerene-Based Electronic Devices". Thesis, Queen Mary, University of London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522327.

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Rathna, A. "Theoretical Studies Of Fullerenes And Fullerene Derivatives". Thesis, Indian Institute of Science, 1994. https://etd.iisc.ac.in/handle/2005/111.

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The detection of Ceo and Cro in 1985 and the subsequent development of a preparative procedure have opened up a new area of research in carbon chemistry. The study of physico-chemical properties of these molecules is currently being pursued with great interest. The goal of the present thesis is to provide simple generalization concerning the structure and bonding which would be of useful interpretive value in understanding the reactivity patterns. The stability of a large number of derivatives have been examined at uniform levels of semiempirical MO theories. The results are shown to be consistent with simple localized bonding model of molecular and electronic structure of Ceo and Cro. Additional factors influencing the relative stabilities of fullerene derivatives are also analysed.
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Rathna, A. "Theoretical Studies Of Fullerenes And Fullerene Derivatives". Thesis, Indian Institute of Science, 1994. http://hdl.handle.net/2005/111.

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The detection of Ceo and Cro in 1985 and the subsequent development of a preparative procedure have opened up a new area of research in carbon chemistry. The study of physico-chemical properties of these molecules is currently being pursued with great interest. The goal of the present thesis is to provide simple generalization concerning the structure and bonding which would be of useful interpretive value in understanding the reactivity patterns. The stability of a large number of derivatives have been examined at uniform levels of semiempirical MO theories. The results are shown to be consistent with simple localized bonding model of molecular and electronic structure of Ceo and Cro. Additional factors influencing the relative stabilities of fullerene derivatives are also analysed.
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4

Wessendorf, Florian. "Supramolecular fullerene-porphyrin architectures = Supramolekulare Fulleren-Porphyrin-Architekturen". kostenfrei, 2010. http://d-nb.info/1000613593/34.

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Mo^n, Dyfrig. "Fullerene crystallisation in Fullerene/Polymer bilayers". Thesis, Swansea University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678620.

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Peel, Jason Alexander. "The synthesis and characterisation of some new organometallic derivatives of [60]fullerene". Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389639.

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Rahmer, Jürgen. "Electronic spin states in fullerides and endohedral fullerenes". [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10934928.

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Samoylova, Nataliya. "Cluster-based redox activity in Endohedral Metallofullerenes:". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-230132.

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Endohedral fullerenes are closed carbon shells encapsulating molecular or ionic species in their inner space. Obtained for the first time in 1985, endohedral metallofullerenes (EMFs) remain in focus of research for many years with a broad variety of metal atoms, endohedral cluster and cage sizes being reported. Electrochemical studies of endohedral metallofullerenes are of particular interest because of the more complex redox behavior in comparison to empty fullerenes. The EMF molecules can be considered as a combinations of positively charged cluster and negatively charged carbon shell “ligand”, and both constituents can be redox active. A cage-based electrochemical activity is more common, in particular, the most abundant nitride clusterfullerenes generally have redox-active cages. Cluster-based electrochemical activity is less common and can be revealed via unexpected redox behavior (e.g., shifted potential when compared to analogous molecules, potential metal dependence) and with the use of spectroscopic methods. Here we report electrochemical and EPR studies of three EMF families: (i) M2@C82-C3v and M2@C82-Cs dimetallofullerenes with a covalent bonding between two metal atoms, (ii) M2@C80(CH2Ph) dimetallofullerene derivatives with single-occupied metal-bonding orbital, and (iii) M2TiC@C80 EMFs with endohedral Ti(IV) (M is either Sc or Y or a lanthanide). For the first two families, the metal-metal bonding orbital has been found to be redox active: in M2@C82, the double-occupied M-M bonding orbital is involved in the first oxidation process, while in M2@C80(CH2Ph) the unoccupied component of single-occupied metal-bonding orbital acts as the LUMO, accepting one electron during the first reduction step. Thus, single electron transfer reactions in both cases lead to the changes in the magnetic properties of EMFs, which is especially well revealed by EPR spectroscopy. For the series of M2TiC@C80 EMFs, the first reduction predominantly occurs on internal Ti atom and can be described as TiIV/TiIII redox process. Due to the variation of the size of the Ti ion in different oxidation states, reduction changes the inner strain of the cluster, leading to a large variability of the TiIV/TiIII reduction potential in dependence on the size of the formally inert lanthanide metal in M2TiC@C80.
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Duggan, Andrew Charles. "Fullerene intercalation chemistry". Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298749.

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Henry, Paul Francis. "Fullerene intercalation chemistry". Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363757.

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Libros sobre el tema "Fullerene"

1

C, Eklund P. y Rao Apparao M. 1961-, eds. Fullerene polymers and fullerene polymer composites. Berlin: Springer, 2000.

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Andreas, Hirsch. The chemistry of the fullerenes. Stuttgart: G. Thieme Verlag, 1994.

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Dettmann, Joachim. Fullerene. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5.

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Eklund, Peter C. y Apparao M. Rao, eds. Fullerene Polymers and Fullerene Polymer Composites. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04269-4.

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B, Smith Amos, ed. Fullerene chemistry. Oxford: Pergamon, 1996.

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N, Kramer Carl, ed. Fullerene research advances. New York: Nova Science Publishers, 2007.

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Andreoni, Wanda, ed. The Physics of Fullerene-Based and Fullerene-Related Materials. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4038-6.

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Prassides, Kosmas, ed. Fullerene-Based Materials. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/b84247.

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Fullerene collision reactions. Dordrecht: Kluwer Academic, 2003.

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Campbell, Eleanor E. B. Fullerene Collision Reactions. Dordrecht: Springer Netherlands, 2004.

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Capítulos de libros sobre el tema "Fullerene"

1

Kitagawa, Toshikazu, Yasujiro Murata y Koichi Komatsu. "Fullerene Reactivity - Fullerene Cations and Open-Cage Fullerenes". En Carbon-Rich Compounds, 383–420. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607994.ch9.

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Hebard, A. F. "Fullerene and Fulleride Films". En Physics and Chemistry of Finite Systems: From Clusters to Crystals, 1213–20. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-2645-0_166.

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Dettmann, Joachim. "Der Fußball, der vom Himmel fiel". En Fullerene, 11–18. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_1.

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Dettmann, Joachim. "Das ABC des Elements Kohlenstoff". En Fullerene, 19–99. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_2.

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Dettmann, Joachim. "Was sind Cluster?" En Fullerene, 101–17. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_3.

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Dettmann, Joachim. "Die Fulleren Story". En Fullerene, 119–44. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_4.

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Dettmann, Joachim. "Richard Buckminster Fuller (1895 bis 1983)". En Fullerene, 145–48. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_5.

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Dettmann, Joachim. "In Form — Symmetrie, Topologie, Strukturen". En Fullerene, 149–95. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_6.

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Dettmann, Joachim. "Fullerenähnliche Mikroarchitekturen". En Fullerene, 197–202. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_7.

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Dettmann, Joachim. "Chemie der Fullerene". En Fullerene, 203–20. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-5705-5_8.

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Actas de conferencias sobre el tema "Fullerene"

1

Kuzmany, H., J. Fink, M. Mehring y S. Roth. "FULLERENES AND FULLERENE NANOSTRUCTURES". En International Winterschool on Electronic Properties of Novel Materials. WORLD SCIENTIFIC, 1996. http://dx.doi.org/10.1142/9789814530552.

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Marciu, D., C. Figura, S. Wang, J. R. Heflin, P. Burbank, S. Stevenson y H. C. Dorn. "Enhanced Degenerate Four-Wave Mixing in an Endohedral Metallofullerene Through Metal-to-Cage Charge-Transfer". En Organic Thin Films for Photonic Applications. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/otfa.1997.the.15.

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Since the initial discovery and development of a technique for macroscopic preparation of the archetypal and most abundant fullerene C60, a wealth of fullerene-based structures have been produced including higher fullerenes, charge-transfer complexes, fullerene derivatives, superconducting exohedral-doped fullerenes, and carbon nanotubes. One of the most intriguing fullerene classes is the endohedral fullerene in which the spheroidal molecular structure is employed to encapsulate a small number of atoms (one to four) internal to the cage.1,2 Until recently, the difficult separation process of endohedral fullerenes had limited their availability to submilligram levels. Consequently, initial studies of these materials had primarily been restricted to electron paramagnetic resonance (EPR) and linear spectroscopy. EPR measurements demonstrated that, for the case of La@C82, the La atom transfers three electrons to the fullerene cage and resides in the +3 oxidation state.2 Metal-to-cage charge transfer appears to be a common feature of transition metal-containing endohedral metallofullerenes. Meanwhile, nonlinear optical studies of empty-cage C60 and C70 have shown that these materials possess both large third order susceptibilities χ(3)(−ω4;ω1,ω2,ω3)3 (~10-11 esu) and strong optical limiting behavior.4,5 We report here the first nonlinear optical measurements of an endohedral metallofullerene and find a dramatic enhancement in the third order nonlinear optical response. Degenerate four-wave mixing (DFWM) experiments on solutions of the endohedral metallofullerene Er2@C82 show that the metal-to-cage charge transfer provides a mechanism for increasing χ(3)(−ω4;ω1,ω2,ω3) by orders of magnitude relative to empty-cage fullerenes.
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Shibahara, Masahiko, Tsubasa Shimizu, Nilson Kunioshi y Hiroshi Takada. "Experimental Study on Fullerene Formation Process in Toluene Flame at Low Pressure Condition". En 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21122.

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Polycyclic Aromatic Hydrocarbons generated in the combustion processes of fuel rich hydrocarbon flames are considered to be important precursors of soot that causes environmental pollution. On the other hand, in a combustion process under low pressure conditions, the generation of fullerenes which are one of large cage-shaped carbon clusters was reported. Combustion synthesis of fullerenes is expected to be one of the mass production methods of fullerenes and a premixed flame of toluene and oxygen is utilized in real mass production process of fullerenes. However, the fullerene formation mechanism from PAH in toluene and oxygen premixed flames has not been clarified yet. Therefore, in the present study, contents of PAH and fullerene in the total soot obtained from premixed flames of toluene and oxygen surrounded with premixed flame of methane and oxygen under various physical conditions were analyzed through gas and liquid chromatography. In the present study over 5 weight percent PAHs were found in the collected soot samples and 22 kinds of substances in PAHs can be specified by using the standard sample and 10 isometric structures of PAHs can be specified by using a gas chromatograph system. When the flame fluctuation was small because of low flow rate of the center and outer flames, the fullerene content in the soot sample increased and the PAH contents of lower molecular weight increased with the increase of the pressure in the chamber. When the flame fluctuation was relatively large because of high flow rate of the center and outer flames, the fullerene content in the soot sample had the maximum peak and the PAH contents of lower molecular weight were dramatically changed from those in the case with small flame fluctuation. Contents of C60 in the total fullerenes increased and those of C70 decreased with the increase of the pressure in the chamber.
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Marcy, H. O., M. J. Rosker, Tallis Y. Chang, J. Khoury, K. Hansen y R. L. Whetten. "Near-Resonance, Time-Resolved Degenerate Four Wave Mixing Studies for Thin Films of C60 and C70 Fullerenes Using Femtosecond Optical Pulses". En Nonlinear Optics. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/nlo.1992.ma6.

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The availability of gram-scale quantities of fullerenes allows for the study the of the physical properties of these unique molecules. The large number of highly polarizable electrons associated with fullerene molecules make them potentially attractive as nonlinear optical materials. Structural studies indicate that fullerenes are bound together in the solid state by relatively weak van der Waals forces. An enhancement of the nonlinear optical response for excitation near the band edge, similar to that observed for semiconductor clusters in passive glass matrices, may occur due to the relative isolation of the individual fullerene molecules. Recent reports1–3 indicate that C60 has a relatively large third-order nonlinear optical response at wavelengths far from the band edge -- on the order of that observed for many highly conjugated organic polymers.
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Saika, Tatsuya, Youhei Sakita y Masahiko Shibahara. "The Effect of the Residence Time in the High Temperature Field on the Fullerene and PAH Formation Mechanism". En ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44543.

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Fullerenes were generated and observed in the combustion processes of hydrocarbon fuel under reduced pressure conditions however the fullerene formation mechanism from PAHs in fuel rich hydrocarbon flames under reduced pressure conditions has not been clarified yet. In the present study, the effects of the residence time in the high temperature reaction field were investigated experimentally and the effects of the residence time on the contents of fullerenes and PAHs were discussed. The experimental results showed that the contents of fullerenes as well as PAHs in the total soot collected from the flue gas decreased with the increase of the residence time in the range from 800 to 1500 degree Celsius. On the other hand, the contents of fullerenes in the total soot decreased with the increase of the residence time over 1500 degree Celsius because the total PAHs contents in the flue gas increased under the present experimental conditions. It is essential for the fullerene generation to realize the optimal residence time from 800 to 1500 degree Celsius as well as that over 1500 degree Celsius with an appropriate PAH partial pressure in the combustion process.
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Ji, W., S. H. Tang, G. Q. Xu, H. S. O. Chan, S. C. Ng y W. W. Ng. "Nonlinear Optical Response of Fullerene-doped Polymethyl Methacrylate Films". En Organic Thin Films for Photonic Applications. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/otfa.1993.wd.18.

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Recently fullerenes (a mixture of C60 and C70) have received considerable attention because these molecules possess strong nonlinear-optical behaviour. Both optical limiting response [1] and photorefractive properties [2] of C60-doped polymers have been observed. In this article, we report the observation of a large third-order nonlinear optical susceptibility in fullerene-doped polymer thin films with nanosecond laser pulses and discuss the mechanism responsible for the observed nonlinear susceptibility.
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Robles Hernandez, Francisco C. y Goran Majkic. "Multi-Functional Fullerene Soot/Alumina Composites". En ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89865.

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Here are presented the results of characterization and mechanical testing of composites consisting of alumina matrix reinforced with fullerene soot. The composites were manufactured by mechanical milling, sonication, and spark plasma sintering. Small amounts of Ni and Ti were added as catalyst to in situ synthesize complex carbon structures during thermomechanical processing. Some of the carbon in the soot showed phase transformations to diamond, fullerite, graphene-like particles, etc. that act as effective reinforcement. This resulted in significant improvements in fracture toughness in fully dense samples while preserving relatively high hardness. Electrical resistivity decreases by 15 orders of magnitude. The abovementioned improvements are attributed to the formation of a homogeneous carbon coating on the alumina particles and the in situ synthesized carbon nanostructures. The type of carbon nanostructure synthesized depends on the catalyst, SPS conditions, and the amount of fullerene soot added. A small amount of ruby is present as an impurity in the alumina serving as a pressure sensor through its stress-dependent luminescence and gives additional multi-functionality to the composite.
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Nicodemos, Diego S., Sulamita Klein y Luerbio Faria. "Frustração de Arestas em (3, 6)-Fullerenes". En I Encontro de Teoria da Computação. Sociedade Brasileira de Computação - SBC, 2018. http://dx.doi.org/10.5753/etc.2016.9765.

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Grafos (3, 6)-fullerenes são grafos planares, 3-conexos, cúbicos cujas faces têm tamanho 3 ou 6. Determinar o menor número de arestas a serem deletadas de um grafo de modo a obter um subgrafo gerador bipartido é conhecido na literatura [Doslic and Vukicevic 2007] como o Problema de Frustração de Arestas. Neste trabalho, abordamos o Problemas da Frustração de Arestas em grafos (3, 6)- fullerenes. Mostramos que todo grafo (3, 6)-fullerene com n vértices torna-se bipartido após a retirada de no máximo q4 3n arestas.
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Guillard, Tony, Gilles Flamant y Daniel Laplaze. "Heat, Mass and Fluid Flow in a Solar Reactor for Fullerene Synthesis". En ASME 2001 Solar Engineering: International Solar Energy Conference (FORUM 2001: Solar Energy — The Power to Choose). American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/sed2001-161.

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Abstract A 2 kW solar furnace was used to vaporize a graphite target for fullerene synthesis. Tests were performed in a wide range of vaporization rates (0.1–4 g/h), under variable pressure and argon flow rate. Experimental results are interpreted with numerical simulation to define key parameters for large-scale synthesis of fullerenes with solar energy. We demonstrate that the vaporization process is controlled by diffusion in the temperature and pressure ranges 3000–3700 K and 70–250 hPa respectively. Experimental data and numerical simulation suggest that in the solar reactor, fullerene yield is governed by the dilution of carbon vapor in argon and by the temperature gradient in the cooling zone. Criteria for both parameters are suggested. Consequently, these data, combined with the numerical model accounting for heat, mass and fluid flow inside the reactor, may be used for the design of large-scale solar process.
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Prasad, Paras N., G. L. Huang, Maciek E. Orczyk, Jacek Swiatkiewicz, Jaroslaw W. Zieba, M. Berrada y Seizo Miyata. "Optically induced nonlinearities in fullerenes and fullerene-doped polymeric composites". En SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, editado por Zakya H. Kafafi. SPIE, 1994. http://dx.doi.org/10.1117/12.196124.

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Informes sobre el tema "Fullerene"

1

Kwei, G. H., J. D. Jorgensen, J. E. Schirber y B. Morosin. Rare-gas intercalation into fullerene interstices. Office of Scientific and Technical Information (OSTI), agosto de 1995. http://dx.doi.org/10.2172/132650.

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McElvany, Stephen W., Mark M. Ross, Nancy S. Goroff y Francos Diederich. Cyclocarbon Coalescence: Mechanisms for Tailormade Fullerene Formation. Fort Belvoir, VA: Defense Technical Information Center, mayo de 1993. http://dx.doi.org/10.21236/ada265489.

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Rinzler, A. G., J. H. Hafner, P. Nilolaev, D. T. Colbert y R. E. Smalley. Field emission and growth of fullerene nanotubes. Office of Scientific and Technical Information (OSTI), noviembre de 1994. http://dx.doi.org/10.2172/650265.

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McBranch, D., R. Kohlman, V. Klimov, M. Grigorova, X. Shi, L. Smilowitz, B. R. Mattes, H. Wang y F. Wudl. New fullerene-based mixed materials: Synthesis and characterization. Office of Scientific and Technical Information (OSTI), noviembre de 1998. http://dx.doi.org/10.2172/676884.

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Zagitova, Liana, Ilya Abramov y Svetlana Gainanova. Levofloxacin enantioselective voltammetric sensing based on functionalized fullerene. Peeref, julio de 2023. http://dx.doi.org/10.54985/peeref.2307p8077405.

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Lawson, Del R., Daniel L. Feldheim, Colby A. Foss, Peter K. Dorhout, C. M. Elliott, Charles R. Martin y Bruce A. Parkinson. Near-IR Absorption Spectra for the C70 Fullerene Anions. Fort Belvoir, VA: Defense Technical Information Center, julio de 1992. http://dx.doi.org/10.21236/ada253658.

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Cahill, P. A., C. C. Henderson, C. M. Rohlfing, D. A. Loy, R. A. Assink, K. T. Gillen, S. J. Jacobs y M. T. Dugger. Fullerene-based materials research and development. LDRD final report. Office of Scientific and Technical Information (OSTI), mayo de 1995. http://dx.doi.org/10.2172/83027.

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Biener, M. M. Fullerene-grafted 3D graphene as electrical energy storage material. Office of Scientific and Technical Information (OSTI), noviembre de 2019. http://dx.doi.org/10.2172/1574619.

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Schirber, J. E., R. A. Assink, B. Morosin, D. A. Loy y G. A. Carlson. LDRD final report on gas separation by fullerene membranes. Office of Scientific and Technical Information (OSTI), julio de 1996. http://dx.doi.org/10.2172/270715.

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Brosha, E. L., J. R. Davey, F. H. Garzon y S. Gottesfeld. The development of a fullerene based hydrogen storage system. Office of Scientific and Technical Information (OSTI), noviembre de 1998. http://dx.doi.org/10.2172/677006.

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