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A method and apparatus for high-throughput controlled synthesis of fullerenes and endohedral metal fullerenes / G. N. Churilov [et al.] // Tech. Phys. Lett. - 2016. - Vol. 42, Is. 5. - P. 475-477, DOI 10.1134/S1063785016050072. - Cited References: 9. - This work was supported by a grant of the Ministry of Science and Education of the Russian Federation, ID RFMEFI61314X0010, project no. 14.613.21.0010. . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
Metallofullerenes
Plasma
Аннотация: A method for synthesis of carbon nanostructures in a high-frequency arc discharge in the flow of helium (3–4 L/min) is presented. It is shown that the plasma-chemical synthesis of fullerenes and endohedral metal fullerenes (EMFs) can be controlled by changing helium pressure in the chamber. Temperature and electron concentration along the line normal to the discharge axis decrease upon moving away from the axis to the periphery; the larger the pressure, the sharper is the decrease in these parameters. The optimal helium pressure of 98 kPa was found in obtaining the Gd@C82 EMF which corresponds to the maximal EMF yield of 5 wt %. © 2016, Pleiades Publishing, Ltd.

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Публикация на русском языке Метод и установка для высокопроизводительного управляемого синтеза фуллеренов и эндоэдральных металлофуллеренов [Текст] / Г. Н. Чурилов [и др.] // Письма в Журн. техн. физ. : Санкт-Петербургская издательская фирма "Наука" РАН, 2016. - Т. 42 Вып. 9. - С. 64–70

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Leibniz Institute for Solid State and Material Research, Dresden, Germany

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Popov, A. A.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Dudnik, A. I.; Дудник, Александр Иванович; Glushchenko, G. A.; Глущенко, Гарий Анатольевич; Samoylova, N. A.; Dubinina, I. A.; Дубинина, Ирина Александровна; Gulyaeva, U. E.; Гуляева, Ульяна Евгеньевна
}
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A Plasma Generator with Magnetic Vortex Stabilization and Possibilities of Its Use / G. N. Churilov [et al.] // Tech. Phys. Lett. - 2018. - Vol. 44, Is. 12. - P. 1226-1229, DOI 10.1134/S106378501901005X. - Cited References: 8 . - ISSN 1063-7850. - ISSN 1090-6533

РУБ Physics, Applied

Аннотация: A design of a plasma generator, the parameters of the resulting plasma, and the possibilities of its use for the synthesis of nanosized powders and optical emission spectroscopy are described. The device operation is based on the arc discharge of alternating current (66 kHz) in an argon jet between water-cooled metal electrodes. The discharge is stabilized by a flow of isolating gas (helium, nitrogen, air) and an axial magnetic field. The gas flow is fed tangentially to the discharge axis. The plasma between the electrodes has the shape of a cylinder remote from the chamber walls. The temperature and electron concentration in the cross section of the plasma cylinder vary along the radius and take the maximum and minimum values.

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Публикация на русском языке Генератор плазмы с магнитно-вихревой стабилизацией и возможности его применения [Текст] / Г. Н. Чурилов [и др.] // Письма в ЖТФ. - 2019. - Т. 45 Вып. 1. - С. 42-45

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Nikolaev, N. S.; Николаев, Никита Сергеевич; Shichalin, K. V.; Lopatin, V. A.; Лопатин, Владислав Александрович
}
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A study of the synthesis products of fullerenes with nickel and cobalt / E. A. Petrakovskaya [et al.] // Tech. Phys. - 2001. - Vol. 46, Is. 1. - P. 42-46, DOI 10.1134/1.1340883. - Cited References: 15 . - ISSN 1063-7842

РУБ Physics, Applied
Рубрики:
COMPLEXES
SPECTRA
Аннотация: Qualitative analysis of the products of plasmochemical synthesis of fullerenes with metallic nickel and cobalt has been carried out using electron paramagnetic resonance (EPR) and electron microscopy. These studies show that the synthesis products are mainly fullerenes, metallic nanoparticles coated with an insulating layer, and isolated atomic clusters. (C) 2001 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Inst. of Physics, Siberian Branch, RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Bulina, N. V.; Булина, Наталья Васильевна; Churilov, G. N.; Чурилов, Григорий Николаевич; Puzyr', A. P.
}
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Ab-initio investigation of hydrogen absorption by magnesium nanoparticles [Text] / A. S. Fedorov, G. N1. Churilov [et al.] // Carbon Nanomaterials in Clean-Energy Hydrogen Systems : Proceedings of the NATO Advanced Research Workshop on Using Carbon Nanomaterials in Clean-Energy Hydrogen Systems Sudak, Crimea, Ukraine 22–28 September 2007 / red. Baranowski, B.; Zaginaichenko, S.; Schur, D.; Skorokhod, V.; Veziroglu, A. : Springer, 2008. - P603-610. - (SNATO Science for Peace and Security Series Subseries: NATO Science for Peace and Security Series C: Environmental Security), DOI 10.1007/978-1-4020-8898-8_75 . - ISBN 1874-6519

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Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Churilov, G. N.; Чурилов, Григорий Николаевич; Kuzubov, A.A.; Serjantova, M.V.; "Carbon Nanomaterials in Clean-Energy Hydrogen Systems", national conference(2008 ; Sep. ; 22-28 ; Sudak, Crimea)
}
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About iron globules formed at cooling of iron-contained plasma / N. V. Bulina [et al.] // Phys. Metals Metallogr. - 2006. - Vol. 102. - S94-S95, DOI 10.1134/S0031918X06140249. - Cited Reference Count: 4 . - ISSN 0031-918X
Аннотация: This paper is devoted to the investigation of iron globules that are formed during cooling of the iron-carbon-helium plasma and as a result of destruction of a natural ball lightning. Scanning electron microscopy, X-ray fluorescence, X-ray diffraction, and ferromagnetic resonance investigations were carried out. The magnetization values of the samplers were determined.

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Доп.точки доступа:
Bulina, N. V.; Булина, Наталья Васильевна; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич; Marachevsky, A.V.; Chekanova, L. A.; Чеканова, Лидия Александровна; Prokof'ev, D. E.; Churilov, G. N.; Чурилов, Григорий Николаевич; Gromyko, A. I.
}
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Antioxidant Activity and Toxicity of Fullerenols via Bioluminescence Signaling: Role of Oxygen Substituents / E. S. Kovel [et al.] // Int. J. Mol. Sci. - 2019. - Vol. 20, Is. 9. - Ст. 2324, DOI 10.3390/ijms20092324. - Cited References: 74. - This work was supported by PRAN-32, Program: 'Nanostructures: physics, chemistry, biology, technological basis'; RFBR 18-29-19003; RFBR-Krasnoyarsk Regional Foundation 18-44-240004, Tomsk Polytechnic University CE Program. . - ISSN 1422-0067
Кл.слова (ненормированные):
bioactive compound -- fullerenol -- antioxidant activity -- toxicity -- reactive oxygen species -- bioluminescence bioassay
Аннотация: Fullerenols are nanosized water-soluble polyhydroxylated derivatives of fullerenes, a specific allotropic form of carbon, bioactive compounds, and perspective basis for drug development. Our paper analyzes the antioxidant activity and toxicity of a series of fullerenols with different number of oxygen substituents. Two groups of fullerenols were under investigation: (1) C60Oy(OH)(x), C60,70Oy(OH)(x), where x+y = 24-28 and (2) C60,70Oy(OH)(x), Fe0,5C60Oy(OH)(x), Gd@C82Oy(OH)(x), where x+y = 40-42. Bioluminescent cellular and enzymatic assays (luminous marine bacteria and their enzymatic reactions, respectively) were applied to monitor toxicity in the model fullerenol solutions and bioluminescence was applied as a signaling physiological parameter. The inhibiting concentrations of the fullerenols were determined, revealing the fullerenols' toxic effects. Antioxidant fullerenol' ability was studied in solutions of model oxidizer, 1,4-benzoquinone, and detoxification coefficients of general and oxidative types (D-GT and D-OxT) were calculated. All fullerenols produced toxic effect at high concentrations (>0.01 g L-1), while their antioxidant activity was demonstrated at low and ultralow concentrations (<0.001 g L-1). Quantitative toxic and antioxidant characteristics of the fullerenols (effective concentrations, concentration ranges, D-GT, and D-OxT) were found to depend on the number of oxygen substituents. Lower toxicity and higher antioxidant activity were determined in solutions of fullerenols with fewer oxygen substituents (x+y ⋍ 24-28). The differences in fullerenol properties were attributed to their catalytic activity due to reversible electron acceptance, radical trapping, and balance of reactive oxygen species in aqueous solutions. The results provide pharmaceutical sciences with a basis for selection of carbon nanoparticles with appropriate toxic and antioxidant characteristics. Based on the results, we recommend, to reduce the toxicity of prospective endohedral gadolinium-fullerenol preparations Gd@C82Oy(OH)(x), decreasing the number of oxygen groups to x+y ⋍ 24-28. The potential of bioluminescence methods to compare toxic and antioxidant characteristics of carbon nanostructures were demonstrated.

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Держатели документа:
Institute of Biophysics SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
National Research Tomsk Polytechnic University, Tomsk, 634050, Russian Federation
Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Kovel, E. S.; Ковель, Екатерина Сергеевна; Sachkova, A. S.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Churilov, G. N.; Чурилов, Григорий Николаевич; Knyazeva, E. M.; Kudryasheva, N. S.
}
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Arc synthesis of silicon-doped heterofullerenes in plasma at atmospheric pressure / N. V. Bulina [et al.] // Fullerenes Nanotubes and Carbon Nanostructures. - 2007. - Т. 15, № 5. - С. 395-400, DOI 10.1080/15363830701512229 . - ISSN 1536-383X. - ISSN 1536-4046

ГРНТИ

РИНЦ
Держатели документа:
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences
Max-Planck-Institut fur Kernphysik
Доп.точки доступа:
Bulina, N. V.; Булина, Наталья Васильевна; Lopatin, V. A.; Лопатин, Владислав Александрович; Vnukova, N. G.; Внукова, Наталья Григорьевна; Osipova, I. V.; Осипова, Ирина Владимировна; Churilov, G. N.; Чурилов, Григорий Николаевич; Krtschmer, W.
}
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Biological activity of carbonic nano-structures—comparison via enzymatic bioassay / A. S. Sachkova [et al.] // J. Soils Sed. - 2019. - Vol. 19, Is. 6. - P. 2689–2696, DOI 10.1007/s11368-018-2134-9. - Cited References: 38. - This work was supported by the state budget allocated to the fundamental research at the Russian Academy of Sciences, project 0356-2017-0017; PRAN-32, Program: “Nanostructures: physics, chemistry, biology, technological basis.” Study of ROS involvement to antioxidant activity of humic substances was supported by the Russian Science Foundation, grant 16-14-10115. . - ISSN 1439-0108
Кл.слова (ненормированные):
Antioxidant activity -- Bioactive compounds -- Fullerenol -- Humic substances -- Toxicity -- Reactive oxygen species
Аннотация: Purpose: The aim of the work is to compare the biological activity of carbonic nano-structures of natural and artificial origination, namely, humic substances (HS) and fullerenols. Materials and methods: The representative of the fullerenol group, С60Оy(OH)x where у + x = 20–22, was chosen. Enzyme-based luminescent bioassay was applied to evaluate toxicity and antioxidant properties of HS and fullerenol (F); chemiluminescent luminol method was used to study a content of reactive oxygen species (ROS) in the solutions. Toxicity of the bioactive compounds was evaluated using effective concentrations ЕС50; detoxification coefficients DOxT were applied to study and compare antioxidant activity of the compounds. Antioxidant activity and ranges of active concentrations of the bioactive compounds were determined in model solutions of organic and inorganic oxidizers—1,4-benzoquinone and potassium ferricianide. Results and discussion: Values of ЕС50 revealed higher toxicity of HS than F (0.005 and 0.108 g L−1, respectively); detoxifying concentrations of F were found to be lower. Antioxidant ability of HS was demonstrated to be time-dependent; the 50-min preliminary incubation in oxidizer solutions was suggested as optimal for the detoxification procedure. On the contrary, F’ antioxidant effect demonstrated independency on time. Antioxidant effect of HS did not depend on amphiphilic characteristics of the media (values of DOxT were 1.3 in the solutions of organic and inorganic oxidizers), while this of F was found to depend: it was maximal (DOxT = 2.0) in solutions of organic oxidizer, 1,4-benzoquinone. Conclusions: Both HS and F demonstrated toxicity and low-concentration antioxidant ability; however, quantitative characteristics of their effects were different. The differences were explained with HS polyfunctionality, higher ability to decrease ROS content, non-rigidity, and diffusion restrictions in their solutions. Antioxidant effect of the bioactive compounds was presumably attributed to catalytic redox activity of their π-fragments. The paper demonstrates a high potential of luminescent enzymatic bioassay to study biological activity of nano-structures of natural and artificial origination.

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Держатели документа:
National Research Tomsk Polytechnic University, Tomsk, 634050, Russian Federation
Institute of Biophysics FRC KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Physics FRC KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Irkutsk National Research Technical University, Irkutsk, 664074, Russian Federation

Доп.точки доступа:
Sachkova, A. S.; Kovel, E. S.; Churilov, G. N.; Чурилов, Григорий Николаевич; Stom, D. I.; Kudryasheva, N. S.
}
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Biological activity of fullerenols of various structure. The role of reactive oxygen species. Bioluminescent monitoring / E. S. Sushko, A. S. Sachkova, Н. Г. Внукова [et al.] // Biophysical reviews : 7th Congress of Biophysicists of Russia : conference proceedings. - 2023. - Vol. 15, Is. 5. - Ст. S7.437. - P. 1663DOI 10.1007/s12551-023-01150-w

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Публикация на русском языке Биологическая активность фуллеренолов различной структуры. Роль активных форм кислорода. Биолюминесцентный мониторинг [Текст] / Е. С. Сушко, А. С. Сачкова, Н. Г. Внукова [и др.] // VII Съезд биофизиков России : сборник научных трудов : в 2-х т. - Краснодар, 2023. - Т. 2. - С. 11

Держатели документа:
Institute of Biophysics SB RAS, FRC KSC SB RAS
Institute of Physics SB RAS, FRC KSC SB RAS
Tomsk Polytechnic University
Siberian Federal University, Krasnoyarsk
FRC KSC SB RAS, Krasnoyarsk

Доп.точки доступа:
Sushko, E. S.; Сушко, Екатерина Сергеевна; Sachkova, A. S.; Внукова, Наталья Григорьевна; Vnukova, N. G.; Чурилов, Григорий Николаевич; Churilov, G. N.; Stepin, E. A.; Kicheeva, A. G.; Kudryasheva, N. S.; Кудряшова, Надежда Степановна; Congress of Biophysicists of Russia(7 ; 2023 ; Apr. 17-23 ; Krasnodar)
}
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10.

Bioluminescent enzymatic assay as a tool for studying antioxidant activity and toxicity of bioactive compounds / N. S. Kudryasheva [et al.] // Photochem. Photobiol. - 2017. - Vol. 93, Is. 2. - P. 536-540, DOI 10.1111/php.12639. - Cited References:40. - The work was supported by the Russian Foundation for Basic Research, Grants 15-03-06786 and 15-43-04377-sibir; the state budget allocated to the fundamental research at the Russian Academy of Sciences (project 01201351504). . - ISSN 0031-8655. - ISSN 1751-1097

РУБ Biochemistry & Molecular Biology + Biophysics
Рубрики:
LUMINOUS MARINE-BACTERIA
HUMIC SUBSTANCES
DETOXIFICATION PROCESSES
Аннотация: A bioluminescent assay based on a system of coupled enzymatic reactions catalyzed by bacterial luciferase and NADH:FMN-oxidoreductase was developed to monitor toxicity and antioxidant activity of bioactive compounds. The assay enables studying toxic effects at the level of biomolecules and physicochemical processes, as well as determining the toxicity of general and oxidative types. Toxic and detoxifying effects of bioactive compounds were studied. Fullerenols, perspective pharmaceutical agents, nanosized particles, water-soluble polyhydroxylated fullerene-60 derivatives were chosen as bioactive compounds. Two homologous fullerenols with different number and type of substituents, C60O2–4(OH)20–24 and Fe0.5C60(OH) xOy (x + y = 40–42), were used. They suppressed bioluminescent intensity at concentrations 0.01 g L−1 and 0.001 g L−1 for C60O2–4(OH)20-24 and Fe0.5C60(OH)xOy, respectively; hence, a lower toxicity of C60O2–4(OH)20–24 was demonstrated. Antioxidant activity of fullerenols was studied in model solutions of organic and inorganic oxidizers; changes in toxicities of general and oxidative type were determined; detoxification coefficients were calculated. Fullerenol C60O2–4(OH)20–24 revealed higher antioxidant ability at concentrations 10−17−10−5 g L−1. The difference in the toxicity and antioxidant activity of fullerenols was explained through their electron donor/acceptor properties and different catalytic activity. Principles of bioluminescent enzyme assay application for evaluating the toxic effect and antioxidant activity of bioactive compounds were summarized and the procedure steps were described.

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Держатели документа:
Inst Biophys SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Natl Res Tomsk Polytech Univ, Tomsk, Russia.
Inst Phys SB RAS, Krasnoyarsk, Russia.

Доп.точки доступа:
Kudryasheva, Nadezhda S.; Kovel, Ekaterina S.; Sachkova, Anna S.; Vorobeva, Anna A.; Isakova, V. G.; Исакова, Виктория Гавриловна; Churilov, G. N.; Чурилов, Григорий Николаевич; Russian Foundation for Basic Research [15-03-06786, 15-43-04377-sibir]; Russian Academy of Sciences [01201351504]
}
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