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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fedorov A. S., Fedorov D. A., Kuzubov A. A., Avramov P. V., Nishimura Y., Irle S., Witek H. A.
Заглавие : Relative Isomer Abundance of Fullerenes and Carbon Nanotubes Correlates with Kinetic Stability
Разночтения заглавия :авие SCOPUS: Relative isomer abundance of fullerenes and carbon nanotubes correlates with kinetic stability
Место публикации : Phys. Rev. Lett.: AMER PHYSICAL SOC, 2011. - Vol. 107, Is. 17. - Ст.175506. - ISSN 0031-9007, DOI 10.1103/PhysRevLett.107.175506
Примечания : Cited References: 29. - S. I, P. V. A, and A. S. F gratefully acknowledge generous hospitality during their visits to Krasnoyarsk (S. I) and Fukui Institute for Fundamental Chemistry in Kyoto and Nagoya University (P. V. A and A. S. F) under support of the joint JSPS-RFBR travel grant 09-02-92107. This work was partially supported by National Science Council (grants NSC96-2113-M009-022-MY3 and NSC96-2113-M009-011-MY3) and Ministry of Education of Taiwan (MOE-ATU project), as well as by the JAEA Research fellowship (P. V. A). We thank the Institute of Computer Modeling (Siberian Division of RAS) and the Joint Supercomputer Center RAS for opportunity to use cluster computers for performing all calculations.
Предметные рубрики: CHEMICAL MOLECULAR-DYNAMICS
C-60
BUCKMINSTERFULLERENE
MECHANISM
ROAD
Ключевые слова (''Своб.индексиров.''): carbon nanostructures--kinetic factors--kinetic stability--thermal vibration--carbon nanotubes--fullerenes--isomers--kinetics
Аннотация: A methodology to evaluate the kinetic stability of carbon nanostructures is presented based on the assumption of the independent and random nature of thermal vibrations. The kinetic stability is directly correlated to the cleavage probability for the weakest bond of a given nanostructure. The application of the presented method to fullerenes and carbon nanotubes yields clear correlation to their experimentally observed relative isomer abundances. The general and simple formulation of the method ensures its applicability to other nanostructures for which formation is controlled by kinetic factors.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vnukova N. G., Lopatin V. A., Bulina N. V., Churilov G. N.
Заглавие : Spectral characteristics of an atmospheric-pressure arc discharge during the synthesis of fullerene derivatives
Место публикации : Tech. Phys. - 2008. - Vol. 53, Is. 6. - P.749-751. - ISSN 1063-7842, DOI 10.1134/S1063784208060133
Примечания : Cited References: 17
Предметные рубрики: CARBON PLASMA
C-60
Аннотация: The electron concentration and temperature are measured when elements having various ionization potentials are introduced into the carbon-helium plasma that forms in a high-frequency atmospheric-pressure arc discharge. The effect of the introduced elements on the relative fullerene content in a carbon condensate is also studied. The plasma parameters are determined by in situ emission spectral analysis during the synthesis of fullerene derivatives with scandium, sodium, and silicon. The variation of the atomic and molecular line intensities of the plasma radiation with the distance from the carbon-arc axis is investigated upon the introduction of various doping substances. The optimal temperature conditions for the synthesis of fullerene derivatives with Sc, Na, and Si are found.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulina N. V., Petrakovskaya E. A., Fedorov A. S., Churilov G. N.
Заглавие : Synthesis and study of manganese-containing endohedral fullerenes
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007. - Vol. 49, Is. 3. - P599-602. - ISSN 1063-7834, DOI 10.1134/S1063783407030377
Примечания : Cited References: 15
Предметные рубрики: PLASMA
STATE
C-60
Аннотация: Fullerenes containing manganese and iron atoms are synthesized in a high-frequency carbon-helium plasma at atmospheric pressure. The electron paramagnetic resonance (EPR) spectrum of the synthesized compound contains not only lines attributed to iron atoms but also the lines of a manganese ion pair with an additional hyperfine structure. The latter lines are assigned to the endohedral complex Mn-2@C-n (n 70). The possible existence of these structures is evaluated from quantum-chemical calculations of the optimum geometry of the endohedral fullerene Mn-2@C-84 with C-2V symmetry. It is found that the manganese atoms are spaced similar to 2.72 angstrom apart at the center of the molecule.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stepanov K. L., Stankevich Y. A., Stanchits L. K., Churilov G. N., Fedorov A. S., Novikov P. V.
Заглавие : The effect of electron density on the kinetics of fullerene formation in carbon plasma
Разночтения заглавия :авие SCOPUS: The Effect of Electron Density on the Kinetics of Fullerene Formation in Carbon Plasma
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2003. - Vol. 29, Is. 11. - P927-929. - ISSN 1063-7850, DOI 10.1134/1.1631366
Примечания : Cited References: 10
Предметные рубрики: C-60
Аннотация: The influence of the carbon cluster charge on their coagulation kinetics has been studied. The equations of kinetics have been solved and it is established that allowance for the cluster charging leads to an increase in the rate of fullerene formation under otherwise equal conditions. In connection with this, the role of minor impurities with a low ionization potential in carbon-containing plasma is discussed. (C) 2003 MAIK "Nauka/Interperiodica".
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tomilin F. N., Avramov P. V., Varganov S. A., Kuzubov A. A., Ovchinnikov S. G.
Заглавие : Possible scheme of synthesis-assembling of fullerenes
Разночтения заглавия :авие SCOPUS: Possible scheme of synthesis - Assembling of fullerenes
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2001. - Vol. 43, Is. 5. - P973-981. - ISSN 1063-7834, DOI 10.1134/1.1371387
Примечания : Cited References: 21
Предметные рубрики: MOLECULAR-DYNAMICS
ISOMERS
C-60
C60
Аннотация: A new scheme of fullerene formation is proposed on the basis of the similarity between the experimentally detected carbon structures. According to experimental data, the microclusters of C(2) and C(10) are synthesized first and then either an intermediate nucleus cluster or an obtainable lower fullerene is assembled from them. A high-symmetry fullerene can be assembled with a high probability from a nucleus cluster with a "good" symmetry. The atomic and electronic structures of molecules such as C(36), C(60), C(70), and C(76) are analyzed. For C(36), the NMR spectra are calculated and compared with the experimental data. (C) 2001 MAIK "Nauka/Interperiodica".
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Avramov P. V., Ovchinnikov S. G., Varganov S. A., Tomilin F. N.
Заглавие : Electronic and atomic structures of the isomers of endohedral and exohedral fullerene complexes with two lithium atoms
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2001. - Vol. 43, Is. 9. - P1794-1799. - ISSN 1063-7834, DOI 10.1134/1.1402242
Примечания : Cited References: 21
Предметные рубрики: VIBRATION-ROTATION BANDS
INFRARED ROTATION
C-60
BUCKMINSTERFULLERENE
ION
Аннотация: The electronic structures of all the possible isomers of endohedral and exohedral C(60) fullerene complexes with two lithium atoms are theoretically investigated. It is found that the electronic structures of these compounds are characterized by an impurity filled-level state determining the band gap. The location of the impurity state and, correspondingly, the band gap of the exohedral fullerene complexes depend on the coordination mode and the distance between the alkali metal ions. A similar dependence is observed for the total energy of the exohedral fullerene complex under investigation. (C) 2001 MAIK "Nauka/ Interperiodica".
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avramov P. V., Varganov S. A., Ovchinnikov S. G.
Заглавие : Atomic-core dynamics and the electronic structure of some endo- and exohedral complexes of fullerenes with light elements
Разночтения заглавия :us: Atomic-core dynamics and the electronic structure of some endo-and exohedral complexes of fullerenes with light elements
Место публикации : Phys. Solid State. - 2000. - Vol. 42, Is. 11. - P.2168-2175. - ISSN 1063-7834, DOI 10.1134/1.1324059
Примечания : Cited References: 39
Предметные рубрики: M-AT-C-60 ENDOHEDRAL COMPLEXES
MOLECULAR-DYNAMICS
PHASE-TRANSITION
AB-INITIO
SOLID C60
C-60
IONS
Аннотация: The atomic and electronic structure of some endo-, exo-, and endo-exohedral complexes of the fullerene C-60 with various guest atoms and molecules (He-n, H-2, and Li-2) are investigated using semiempirical and nonempirical quantum-chemical methods. The atomic core dynamics is studied by the method of molecular dynamics. It is shown that guest atoms and molecules in fullerene polyhedra acquire an orbital angular momentum due to the correlated motion of nuclei above the low-energy barriers of the potential surface within the carbon polyhedron even at low temperatures (from 4 to 78 K). The emergence of orbital angular momenta of nuclei of guest atoms and molecules is attributed to a change in the contribution of the orbital angular momentum of electrons to the potential surface of the complexes. The motion of Li ions in a polyhedron leads to blurring of the top of the valence band and to the emergence of a charge polarization wave in the carbon polyhedron. (C) 2000 MAIK "Nauka/Interperiodica".
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Novikov P. V., Churilov G. N.
Заглавие : Characteristics of the heating dynamics of a graphite conductor taking into account the skin effect
Место публикации : Tech. Phys.: AMER INST PHYSICS, 2000. - Vol. 45, Is. 9. - P1214-1218. - ISSN 1063-7842, DOI 10.1134/1.1318113
Примечания : Cited References: 13
Предметные рубрики: FULLERENES
C-60
SPECTRA
Аннотация: Calculations for a one-dimensional model of RF heating of a cylindrical graphite conductor have been carried out. The heating dynamics are analyzed in the general form. Conductor temperature profiles and the times for heating up to the graphite sublimation temperature as a function of current and frequency have been obtained. A model of conductor heating with partial return of the energy irradiated by the conductor surface has been considered. Frequency and current ranges have been determined to carry out this graphite sublimation method in a chamber with reflecting walls. The problem is associated with carbon vapor production and subsequent synthesis of fullerenes and other carbon structures. (C) 2000 MAIK "Nauka/ Interperiodica".
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Bayukov O. A., Petrakovskaya E. A., Korets A. Y., Isakova V. G., Titarenko Y. N.
Заглавие : Synthesis and study of iron-containing fullerene complexes
Место публикации : Tech. Phys.: AMER INST PHYSICS, 1997. - Vol. 42, Is. 9. - P1111-1113. - ISSN 1063-7842, DOI 10.1134/1.1258784
Примечания : Cited References: 9
Предметные рубрики: C-60
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