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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Malakhovskii A. V., Edelman I. S., Sokolov A. Е., Sukhachev A. L., Temerov V. L., Gnatchenko S. L., Kachur I. S., Piryatinskaya V. G., Valiev U. V.
Заглавие : Optical absorption and luminescence of Tm3+ and Yb3+ ions in huntite structure
Место публикации : Республиканская конференция «Оптические методы в современной физике», Ташкент, Узбекистан, 2008, с. 33-35
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanova O. S., Lin, Chun-Rong, Edelman I. S., Svetlitsky E. S., Sokolov A. Е., Zharkov S. M., Sukhachev A. L., Vorobyev S. A., Petrov D. A., Lin, En-Szu
Заглавие : Adsorption properties and catalytic activity of Fe3O4-Ag nanostructures
Колич.характеристики :12 с
Место публикации : Appl. Surf. Sci. - 2024. - Vol. 665. - Ст.160236. - ISSN 01694332 (ISSN), DOI 10.1016/j.apsusc.2024.160236. - ISSN 18735584 (eISSN)
Примечания : Cited References: 48. - The work is supported by the Russian Science Foundation (project no. 23-22-10025, https://rscf.ru/project/ 23-22-10025/) and by the Krasnoyarsk Regional Fund of Science and Technology Support. The electron microscopy and EDS investigations were conducted in the SFU Joint Scientific Center. Magnetic investigations were carried out in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS"
Аннотация: The morphology and magnetic properties as well as adsorption capacity and catalytic activity of Fe3O4-Ag nanoparticles synthesized by the solvothermal method were studied in dependence on the duration of the thermolysis process (3, 6, and 8 h). X-ray diffraction, transmission electron microscopy, and energy-dispersive spectroscopy measurements showed that the morphology of nanoparticles changed strongly as the duration of thermolysis increased. At 6 and 8 h duration, Fe3O4 nanocrystals grow and assemble into porous spherical globules with an Ag core (samples 2 and 3). These samples demonstrate high magnetization value and very low coercivity. The adsorption capacity of nanoparticles was studied with respect to two organic dyes: cationic methylene blue (MB) and anionic Congo red (CR). The particles showed preferential adsorption of the cationic dye. High catalytic activity towards four dyes: MB, methyl orange (MO), CR, and Rhodamine C (RhC) at the presence of NaBH4 is the remarkable property of these samples. The rate constant of the catalytic reaction was 1.4 min−1. Simultaneous exposure of CR and MO dyes to nanoparticles and NaBH4 caused their irreversible 100 % degradation while in the case of MB and RhC, a transition to their leuco form occurred.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bashmakova E. E., Kudryavtsev A. N., Tupikin A. E., Kabilov M. R., Sokolov A. Е., Frank L. A.
Заглавие : Bioluminescent aptamer-based microassay for detection of melanoma inhibitory activity protein (MIA)
Место публикации : Anal. Methods. - 2024. - Article in press. - ISSN 17599660 (ISSN), DOI 10.1039/D4AY00706A. - ISSN 17599679 (eISSN)
Примечания : Cited References: 23
Аннотация: Melanoma inhibitory activity protein (MIA) does obviously offer the potential to reveal clinical manifestations of melanoma. Despite a pressing need for effective diagnosis of this highly fatal disease, there are no clinically approved MIA detection ELISA kits available. A recommended MIA threshold has not yet been defined, mostly by reason of variability in immunoglobulins' affinity and stability, the difference in sample preparation and assay conditions. Here we present a pair of high-affinity DNA aptamers developed as an alternative recognition and binding element for MIA detection. Their stability and reproducible synthesis are expected to ensure this analysis under standard conditions. The devised aptamer-based solid-phase microassay of model standard and control human sera involves luciferase NLuc as a highly sensitive reporter. Bioluminescence dependence on MIA concentration ranges in a linear manner from 2.5 to 250 ng mL−1, providing a MIA detection limit of 1.67 ± 0.57 ng mL−1.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Lukyanenko A. V., Zabluda V. N., Borus A. A., Zamay G. S., Zamay T. N., Luzan N., Zamay S. S.
Заглавие : Aptamer modified Au/Ni/Au nanodiscs for magnetomechanical cell surgery
Коллективы : International Baltic Conference on Magnetism, Балтийский федеральный университет им. И. Канта
Место публикации : V International Baltic Conference on Magnetism. IBCM: Book of abstracts. - 2023. - P.12
Примечания : Cited References: 3
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ivanova O. S., Edelman I. S., Svetlitsky E. S., Sokolov A. Е., Zharkov S. M., Petrov D. A., Sukhachev A. L., Toropova E. S., Chun-Rong Lin, Ying-Zhen Chen
Заглавие : Core-shell magnetite nanoparticles: morphology, magnetic properties, organic dyes adsorption
Коллективы : "Functional materials", International conference, Крымский федеральный университет имени В.И. Вернадского
Место публикации : Ovchinnikov S. G. International conference "Functional materials": book of abstracts/ ed. V. N. Berzhansky ; org. com. S. G. Ovchinnikov [et al.]. - Simferopol, 2023. - P.114
Примечания : Cited References: 1. - РФН № 23-22-10025
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanova O. S., Edelman I. S., Sokolov A. Е., Svetlitsky E. S., Zharkov S. M., Sukhachev A. L., Lin Ch. R., Chen Yu. Zh.
Заглавие : Adsorption of organic dyes by Fe3O4@C, Fe3O4@C@C, and Fe3O4@SiO2 magnetic nanoparticles
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2023. - Vol. 87, Is. 3. - P.338-342. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873822701192. - ISSN 19349432 (eISSN)
Примечания : Cited References: 17. - This research was funded partly by the Ministry of Science and Higher Education of the Russian Federation, project FWES-2021-0035. Ch. R. Lin and Yu. Zh. Chen thank the National Science and Technology Council of Taiwan for the financial support, MOST no. 110-2112-M-153-005- and no. 108-2923-M-153-001-MY3
Аннотация: Fe3O4@C, Fe3O4@C@C, and Fe3O4@SiO2 core–shell nanoparticles are synthesized via thermal decomposition and coprecipitation. Samples are characterized via X-ray spectroscopy, transmission electron microscopy, and magnetometry. It is shown that the magnetic core of all nanoparticles is nanocrystalline and has crystal parameters corresponding to only one phase of Fe3O4, covered with a uniform shell of amorphous carbon or silicon oxide around 8 nm thick. Special attention is given to adsorption properties of the nanoparticles with respect to four dyes: Methylene blue, Congo Red, Eosin Y, and Rhodamine C. The high selectivity of Fe3O4@C nanoparticles to various dyes is revealed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kichkailo A. S., Narodov A. A., Komarova M. A., Zamay T. N., Zamay G. S., Kolovskaya O. S., Erakhtin E. E., Glazyrin Y. E., Veprintsev D. V., Moryachkov R. V., Zabluda V. N., Shchugoreva I., Artyushenko P., Mironov V. A., Morozov D. I., Gorbushin A. V., Khorzhevskii V. A., Koshmanova A. A., Nikolaeva E. D., Grinev I. P., Voronkovskii I. I., Grek D. S., Belugin K. V., Volzhentsev A. A., Badmaev O. N., Luzan N., Lukyanenko K. A., Peters G., Lapin I. N., Kirichenko A. K., Konarev P. V., Morozov E. V, Mironov G. G., Gargaun A., Muharemagic D., Zamay S. S., Kochkina E. V., Dymova M. A., Smolyarova T. E., Sokolov A. Е., Modestov A. A., Tokarev N. A., Shepelevich N., Ozerskaya A. V., Chanchikova N. G., Krat A. V., Zukov R. A., Bakhtina V. I., Shnyakin P. G., Shesternya P. A., Svetlichnyi V. A., Petrova M. M., Artyukhov I. P., Tomilin F. N., Berezovski, Maxim V.
Заглавие : Development of DNA aptamers for visualization of glial brain tumors and detection of circulating tumor cells
Место публикации : Mol. Ther. - Nucleic Acids. - 2023. - Vol. 32. - P.267-288. - ISSN 21622531 (eISSN), DOI 10.1016/j.omtn.2023.03.015
Примечания : Cited References: 69. - The authors are grateful to all the patients and hospital staff participating in this research. We acknowledge the assistance of the AptamerLab LCC (www.aptamerlab.com) and personally Mr. Vasily Mezko for the aptamer 3D structure optimization and financial and technical support. The authors thank Mr. Alexey Kichkailo, Dr. Arkady B. Kogan, and Dr. Rinat G. Galeev for their general support. Mrs. Valentina L. Grigoreva, and Irina V. Gildebrand for the help with histological staining. Technical and instrumental support was provided by the Multiple-Access Center at Tomsk State University; the Krasnoyarsk Inter-District Ambulance Hospital, named after N.S. Karpovich; John L. Holmes Mass Spectrometry Facility at the University of Ottawa; Federal Siberian Research Clinical Centre under the Federal Medical Biological Agency; Shared Core Facilities of Molecular and Cell Technologies at Krasnoyarsk State Medical University and Krasnoyarsk Regional Centre for Collective Use at the Federal Research Centre “KSC SB RAS”. The confocal fluorescence microscopy research was carried out with the equipment of the Tomsk Regional Core Shared Research Facilities Center of the National Research Tomsk State University. The Center was supported by the Ministry of Science and Higher Education of the Russian Federation, grant no. 075-15-2021-693 (no. 13.RFC.21.0012). Acute toxicity studies were performed in a laboratory certified for preclinical studies, Laboratory of Biological Testing, Institute of Bioorganic Chemistry named after academics M.M. Shemyakin and Y.A. Ovchinnikov Russian Academy of Sciences. The authors are grateful to the Joint Super Computer Center of the Russian Academy of Sciences for providing supercomputers for computer simulations. Development of the glioma tumor model in immunosuppressed mice was supported by the Russian Science Foundation grant No. 22-64-00041 (M.A.D.), https://rscf.ru/en/project/22-64-00041/. Synthesis of 11C-aptamer and PET/CT visualization was funded by the Federal Medical Biological Agency; project 122041800132-2 (A.V.O.). Aptamer selection and their clinical applications were funded by the Ministry of Healthcare of the Russian Federation; project АААА-Б19-219090690032-5 (T.N.Z.). The Ministry of Science and Higher Education of the Russian Federation project FWES-2022-0005 (A.S.K.) supported aptamer characterization, molecular modelling, and in vivo experiments. Mass spectrometry analyses, DNA sequencing, and synthesis were supported by NSERC Discovery Grant (M.V.B.). We acknowledge the European Synchrotron Radiation Facility for SAXS experiments and thank Dr. Bart Van Laer for assistance in using a beamline BM29. SAXS measurements were supported by RFBR № 18-32-00478 for young scientists (R.V.M.). The synchrotron SEC-SAXS data for Gli-55 aptamer were also collected at beamline P12 operated by EMBL Hamburg at the PETRA III storage ring (DESY, Hamburg, Germany)
Аннотация: Here, we present DNA aptamers capable of specific binding to glial tumor cells in vitro, ex vivo, and in vivo for visualization diagnostics of central nervous system tumors. We selected the aptamers binding specifically to the postoperative human glial primary tumors and not to the healthy brain cells and meningioma, using a modified process of systematic evolution of ligands by exponential enrichment to cells; sequenced and analyzed ssDNA pools using bioinformatic tools and identified the best aptamers by their binding abilities; determined three-dimensional structures of lead aptamers (Gli-55 and Gli-233) with small-angle X-ray scattering and molecular modeling; isolated and identified molecular target proteins of the aptamers by mass spectrometry; the potential binding sites of Gli-233 to the target protein and the role of post-translational modifications were verified by molecular dynamics simulations. The anti-glioma aptamers Gli-233 and Gli-55 were used to detect circulating tumor cells in liquid biopsies. These aptamers were used for in situ, ex vivo tissue staining, histopathological analyses, and fluorescence-guided tumor and PET/CT tumor visualization in mice with xenotransplanted human astrocytoma. The aptamers did not show in vivo toxicity in the preclinical animal study. This study demonstrates the potential applications of aptamers for precise diagnostics and fluorescence-guided surgery of brain tumors.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Lukyanenko A. V., Moryachkov R. V., Zabluda V. N., Borus A. A., Zamay T., Luzan N. A., Galeev R. G., Masyugin A. N., Zelenov F. V., Zamay S. S.
Заглавие : Biofunctionaized magnetic nanodiscs applied in medicine
Коллективы : "Magnetic nanomaterials in biomedicine: synthesis and functionalization", International conference
Место публикации : 1st International Conference APRICOT 2023: book of abstracts. - 2023. - P.47-48
Примечания : Cited References: 4. - Красноярский рег. фонд науки, № 2022060108781
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanova O. S., Edelman I. S., Lin, Chun-Rong, Svetlitsky E. S., Sokolov A. Е., Lukyanenko, Kirill A., Sukhachev A. L., Shestakov N. P., Chen, Ying-Zhen, Spivakov, Aleksandr A.
Заглавие : Core–shell Fe3O4@C nanoparticles for the organic dye adsorption and targeted magneto-mechanical destruction of Ehrlich ascites carcinoma cells
Место публикации : Materials. - 2023. - Vol. 16, Is. 1. - Ст.23. - ISSN 19961944 (eISSN), DOI 10.3390/ma16010023
Примечания : Cited References: 65. - This research was funded partly by the Ministry of Science and Higher Education of the Russian Federation, project FWES-2021-0035. C.-R.L., Y.-Z.C. and A.A.S. thank the National Science and Technology Council of Taiwan for the financial support, Grants NSTC № 108-2923-M-153-001-MY3 and № 110-2112-M-153-005-. Magnetic investigations were carried out in the Center for Collective Use of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS”
Аннотация: The morphology, structure, and magnetic properties of Fe3O4 and Fe3O4@C nanoparticles, as well their effectiveness for organic dye adsorption and targeted destruction of carcinoma cells, were studied. The nanoparticles exhibited a high magnetic saturation value (79.4 and 63.8 emu/g, correspondingly) to facilitate magnetic separation. It has been shown that surface properties play a key role in the adsorption process. Both types of organic dyes—cationic (Rhodomine C) and anionic (Congo Red and Eosine)—were well adsorbed by the Fe3O4 nanoparticles’ surface, and the adsorption process was described by the polymolecular adsorption model with a maximum adsorption capacity of 58, 22, and 14 mg/g for Congo Red, Eosine, and Rhodomine C, correspondingly. In this case, the kinetic data were described well by the pseudo-first-order model. Carbon-coated particles selectively adsorbed only cationic dyes, and the adsorption process for Methylene Blue was described by the Freundlich model, with a maximum adsorption capacity of 14 mg/g. For the case of Rhodomine C, the adsorption isotherm has a polymolecular character with a maximum adsorption capacity of 34 mg/g. To realize the targeted destruction of the carcinoma cells, the Fe3O4@C nanoparticles were functionalized with aptamers, and an experiment on the Ehrlich ascetic carcinoma cells’ destruction was carried out successively using a low-frequency alternating magnetic field. The number of cells destroyed as a result of their interaction with Fe3O4@C nanoparticles in an alternating magnetic field was 27%, compared with the number of naturally dead control cells of 6%.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Semina P. N., Isaev I. L., Komogortsev S. V., Klyuchantsev A. B., Kostyukov A. S., Blagodatova A. V., Khrennikov D. E., Kichkailo A. S., Zamay T. N., Lapin I. N., Sokolov A. Е., Polyutov S. P., Karpov S. V.
Заглавие : Towards understanding the triggering of the malignant cell death in high-efficiency magneto-mechanical anticancer therapy
Место публикации : J. Phys. D. - 2023. - Vol. 56, Is. 6. - Ст.065401. - ISSN 00223727 (ISSN), DOI 10.1088/1361-6463/acb0dd. - ISSN 13616463 (eISSN)
Примечания : Cited References: 146. - P N S, A S K, D E K, S P P, S V K acknowledge the support by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2020-0008). Experimental analyses were funded by the Ministry of Science and Higher Education of the Russian Federation (Project FWES-2022-0005) – A S K, T N Z. The authors thank Dr S V Saikova for providing the TEM image in figure (b)
Аннотация: The paper discusses schemes for the implementation of magneto-mechanical anticancer therapy and the most probable scenarios of damaging mechanical eﬀects on the membranes of malignant cells by targeted magnetic nanoparticles selectively bound to membrane mechanoreceptors employing aptamers. The conditions for selective triggering of the malignant cell apoptosis in a low-frequency non-heating alternating magnetic ﬁeld, corresponding to the exceeding threshold value of the force acting on the membrane and its mechanoreceptors, are established using a nanoparticle dynamic simulation. The requirements for the functionality of magnetic nanoparticles and their suitability for biomedical applications are analysed. Attention is paid to the possibility of the formation of magnetite nanoparticle aggregates in an external magnetic ﬁeld and their localization near tumor cell membranes. It is shown that the scenario involving the process of aggregation of magnetite nanoparticles provides a suﬃcient magneto-mechanical impact to achieve a therapeutic eﬀect. A possible explanation for the experimentally established fact of successful application of magneto-mechanical therapy using magnetite nanoparticles is presented, in which complete suppression of the Ehrlich carcinoma in an alternating magnetic ﬁeld as a response to a magnetome-chanical stimulus was demonstrated. This result conﬁrmed the possibility of using the method for high eﬃciency treatment of malignant neoplasms. The paper is provided with an extensive review of key publications and the state of art in this area.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zamay, Tatiana, Zamay, Sergey, Luzan, Natalia, Fedotovskaya, Victoriya, Masyugin, Albert, Zelenov F., Koshmanova, Anastasia, Nikolaeva, Elena, Kirichenko, Daria, Veprintsev, Dmitry, Kolovskaya, Olga, Shchugoreva, Irina, Zamay, Galina, Lapin I. N., Lukyanenko A. V., Borus, Andrey, Sukhachev A. L., Volochaev M. N., Lukyanenko, Kirill, Shabanov, Alexandr, Zabluda V. N., Zhizhchenko, Alexey, Kuchmizhak, Aleksandr, Sokolov A. Е., Narodov, Andrey, Prokopenko, Vladimir, Galeev, Rinat, Svetlichnyi, Valery, Kichkailo, Anna
Заглавие : Magnetic nanoscalpel for the effective treatment of ascites tumors
Место публикации : J. Funct. Biomater. - 2023. - Vol. 14, Is. 4. - Ст.179. - ISSN 20794983 (eISSN), DOI 10.3390/jfb14040179
Примечания : Cited References: 36. - This research was funded by the Regional State Autonomous Institution “Krasnoyarsk Regional Fund for Support of Scientific and Scientific and Technical Activities”, Competition of scientific, technical, and innovative projects in the interests of the first world-class climate scientific and educational center “Yenisei Siberia”, grant “Carrying out applied research and development aimed at creating technologies for the production of nanoscalpels based on magnetic nanodisks for microsurgery of glial brain tumors” No. 2022060108781 and with the support of a partner company JSC «NPP «Radiosviaz»
Аннотация: One of the promising novel methods for radical tumor resection at a single-cell level is magneto-mechanical microsurgery (MMM) with magnetic nano- or microdisks modified with cancer-recognizing molecules. A low-frequency alternating magnetic field (AMF) remotely drives and controls the procedure. Here, we present characterization and application of magnetic nanodisks (MNDs) as a surgical instrument (“smart nanoscalpel”) at a single-cell level. MNDs with a quasi-dipole three-layer structure (Au/Ni/Au) and DNA aptamer AS42 (AS42-MNDs) on the surface converted magnetic moment into mechanical and destroyed tumor cells. The effectiveness of MMM was analyzed on Ehrlich ascites carcinoma (EAC) cells in vitro and in vivo using sine and square-shaped AMF with frequencies from 1 to 50 Hz with 0.1 to 1 duty-cycle parameters. MMM with the “Nanoscalpel” in a sine-shaped 20 Hz AMF, a rectangular-shaped 10 Hz AMF, and a 0.5 duty cycle was the most effective. A sine-shaped field caused apoptosis, whereas a rectangular-shaped field caused necrosis. Four sessions of MMM with AS42-MNDs significantly reduced the number of cells in the tumor. In contrast, ascites tumors continued to grow in groups of mice and mice treated with MNDs with nonspecific oligonucleotide NO-MND. Thus, applying a “smart nanoscalpel” is practical for the microsurgery of malignant neoplasms.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Иванова, Оксана Станиславовна, Эдельман, Ирина Самсоновна, Соколов, Алексей Эдуардович, Светлицкий, Евгений Сергеевич, Жарков, Сергей Михайлович, Сухачев, Александр Леонидович, Лин Ч. Р., Чэнь Ю. Ж.
Заглавие : Адсорбция органических красителей магнитными наночастицами Fe3O4@C, Fe3O4@C@C, Fe3O4@SiO2
Место публикации : Изв. РАН. Сер. физич. - 2023. - Т. 87, № 3. - С. 390-395. - ISSN 03676765 (ISSN), DOI 10.31857/S0367676522700685
Примечания : Библиогр.: 17. - Исследование выполнено при финансовой поддержке Министерства науки и высшего образования Российской федерации (FWES-2021-0035). Ч. Р. Лин и Ю. Ж. Чэнь благодарны Министерству науки и технологий Тайваня (проекты MOST No 110-2112-M-153-005- и No 108-2923-M-153-001-MY3). Измерения намагниченности выполнены в Красноярском региональном центре коллективного пользования ФИЦ КНЦ СО РАН
Аннотация: Наночастицы ядро-оболочка Fe3O4@C, Fe3O4@C@C и Fe3O4@SiO2 синтезированы с помощью методик термического разложения и со-осаждения, и охарактеризованы с помощью рентгеновской спектроскопии, просвечивающей электронной микроскопии и магнитометрии. Показано, что магнитное ядро всех наночастиц является нанокристаллическим магнетитом Fe3O4, а оболочка аморфным углеродом или оксидом кремния толщиной около 8 нм. Основное внимание уделялось адсорбционным свойствам наночастиц относительно четырех красителей: метиленового синего, конго красного, эозина Y и родамина C. Выявлена высокая избирательность наночастиц Fe3O4@C по отношению к различным красителям.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Курилова А. В., Соколов, Алексей Эдуардович, Сухачев, Александр Леонидович, Иванова, Оксана Станиславовна, Богданов К. В., Баранов М. А., Дубовик А. Ю.
Заглавие : Синтез, магнитные и магнитооптические свойства антиферромагнитных нанодисков α-Fe2O3–rGO
Место публикации : Изв. РАН. Сер. физич. - 2022. - Т. 86, № 5. - С. 726-729. - ISSN 0367-6765, DOI 10.31857/S0367676522050155
Примечания : Библиогр.: 26
Аннотация: Выполнено комплексное исследование свойств гибридных структур из оксида железа и восстановленного оксида графена α-Fe2O3/rGO, синтезированных методом “мокрого смешивания”. Показано, что наночастицы гематита с относительно однородным распределением по размерам могут быть инкапсулированы в слоях графена, а способ подготовки прекурсора играет ключевую роль в формировании магнитооптических свойств гибридных структур α-Fe2O3/rGO.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Орлов, Юрий Сергеевич, Дудников, Вячеслав Анатольевич, Соколов, Алексей Эдуардович, Овчинникова Т. М., Шестаков, Николай Петрович, Овчинников, Сергей Геннадьевич
Заглавие : Флуктуации мультиплетности ионов Co3+ и смягчение фононного спектра редкоземельных оксидов кобальта
Место публикации : Письма в ЖЭТФ. - 2022. - Т. 115, Вып. 9-10. - С. 650-655. - ISSN 0370-274X, DOI 10.31857/S1234567822100081
Примечания : Библиогр.: 25. - Работа выполнена при финансовой поддержки гранта Российского научного фонда # 18-12-00022
Аннотация: Экспериментально и теоретически исследована необычная температурная зависимость спектров инфракрасного поглощения редкоземельных оксидов кобальта LaCoO3 и GdCoO3 в интервале температур 3.2-550 K. Обнаружено достаточно сильное смягчение оптической фононной моды, которое нельзя объяснить стандартным решеточным ангарманизмом. Показано, что красное смещение фононного спектра обусловлено квадратичным по смещению решетки электрон-фононным взаимодействием и флуктуациями мультиплетности ионов Co3+.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lin, Chun-Rong, Ivanova O. S., Edelman I. S., Knyazev Yu. V., Zharkov S. M., Petrov D. A., Sokolov A. Е., Svetlitsky E. S., Velikanov D. A., Solovyov, Leonid A., Chen, Ying-Zhen, Tseng, Yaw-Teng
Заглавие : Carbon double coated Fe3O4@C@C nanoparticles: Morphology features, magnetic properties, dye adsorption
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52002]; Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan [108-2923-M-153-001-MY3, 109-2112-M-153-003]; Joint Scientific Center of the Siberian Federal University [FSRZ-2020-0011]; Ministry of Science and Higher Education of the Russian Federation
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 3. - Ст.376. - ISSN 2079-4991(eISSN), DOI 10.3390/nano12030376
Примечания : Cited References: 44. - The work was supported financially by the Russian Foundation for Basic Research, Grant No. 19-52-52002 and Ministry of Science and Technology of Taiwan, Grants MOST No. 108-2923-M-153-001-MY3 and No. 109-2112-M-153-003-. The support was obtained also from the Joint Scientific Center of the Siberian Federal University supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out
Предметные рубрики: SOLID-PHASE EXTRACTION
FE3O4 NANOPARTICLES
PROFILE REFINEMENT
Аннотация: This work is devoted to the study of magnetic Fe3O4 nanoparticles doubly coated with carbon. First, Fe3O4@C nanoparticles were synthesized by thermal decomposition. Then these synthesized nanoparticles, 20–30 nm in size were processed in a solution of glucose at 200 °C during 12 h, which led to an unexpected phenomenon – the nanoparticles self-assembled into large conglomerates of a regular shape of about 300 nm in size. The morphology and features of the magnetic properties of the obtained hybrid nanoparticles were characterized by transmission electron microscopy, differential thermo-gravimetric analysis, vibrating sample magnetometer, magnetic circular dichroism and Mössbauer spectroscopy. It was shown that the magnetic core of Fe3O4@C nanoparticles was nano-crystalline, corresponding to the Fe3O4 phase. The Fe3O4@C@C nanoparticles presumably contain Fe3O4 phase (80%) with admixture of maghemite (20%), the thickness of the carbon shell in the first case was of about 2–4 nm. The formation of very large nanoparticle conglomerates with a linear size up to 300 nm and of the same regular shape is a remarkable peculiarity of the Fe3O4@C@C nanoparticles. Adsorption of organic dyes from water by the studied nanoparticles was also studied. The best candidates for the removal of dyes were Fe3O4@C@C nanoparticles. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for cationic dye methylene blue (MB) and anionic dye Congo red (CR). The equilibrium data were more consistent with the Langmuir isotherm and were perfectly described by the Langmuir–Freundlich model.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Omelyanchik A., Kamzin A. S., Valiullin A. A., Semenov V. G., Vereshchagin S. N., Volochaev M. N., Dubrovskiy A. A., Sviridova T., Kozenkov I., Dolan E., Peddis D., Sokolov A. Е., Rodionova V.
Заглавие : Iron oxide nanoparticles synthesized by a glycine-modified coprecipitation method: Structure and magnetic properties
Место публикации : Colloids Surf. A Physicochem. Eng. Asp. - 2022. - Vol. 647. - Ст.129090. - ISSN 09277757 (ISSN), DOI 10.1016/j.colsurfa.2022.129090
Примечания : Cited References: 80. - This work was supported by the Russian Science Foundation grant No. 21-72-20158 . The study of the structure was carried out on the equipment of the Center Collective Use " Materials Science and Metallurgy " which was purchased with the financial support of the Russian Federation represented by the Ministry of Education and Science (No. 075-15-2021-696)
Аннотация: Iron oxide magnetic nanoparticles (MNPs) are of interest in biomedicine and research owing to their moderate cytotoxicity and advanced properties, such as extensive surface-to-volume ratio and possibilities for tailoring their functionality through surface chemistry. To date, various approaches have been used for the synthesis of MNPs with controllable structural properties and various coatings to enhance their stability and functionality. This study describes a modified one-step method of coprecipitation in the presence of glycine allowing the production of particles with controllable size and in situ surface decoration. The effect of different glycine concentrations on the morphostructural and magnetic properties of iron oxide MNPs is studied. The particle size is reduced from 10.2 ± 0.3 to 7.2 ± 0.5 nm by increasing the glycine concentration from 0.06 up to 0.60 mol. The magnetic properties of obtained particles were tracked by SQUID magnetometry and Mossbauer spectroscopy. All samples of glycine capped iron oxide MNPs showed superparamagnetic behaviour at room temperature with maximal value of the saturation magnetization of 69 ± 4 Am2/kg. The results show the optimal concentration range of glycine which can be used in this method: a lower concertation than 0.15 mol does not affect the properties of obtained particles while higher concentrations than 0.3 mol lead to the reduction of magnetic properties (the saturation magnetisation reduces to 59 ± 3 Am2/kg when glycine concentration was 0.6 mol). The proposed economic and environment-friendly approach can be utilized to synthesise –NH2 functionalised MNPs for biomedical or wastewater treatment.
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17.

Вид документа : Однотомное издание
Шифр издания :
Автор(ы) : Морячков, Роман Владимирович
Заглавие : Пространственная структура ДНК-аптамеров по данным малоуглового рентгеновского рассеяния : специальность 1.3.8 "Физика конденсированного состояния" : автореферат диссертации на соискание ученой степени канд. физ.-мат. наук : защищена 09.12.2022
Выходные данные : Красноярск, 2022
Колич.характеристики :23 с
Коллективы : Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук", Институт физики им. Л.В. Киренского Сибирского отделения РАН, Объединенный институт ядерных исследований
Примечания : Библиогр.
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18.

Вид документа : Однотомное издание
Шифр издания : Г5/М 80 рукописный текст
Автор(ы) : Морячков, Роман Владимирович
Заглавие : Пространственная структура ДНК-аптамеров по данным малоуглового рентгеновского рассеяния : специальность 1.3.8 "Физика конденсированного состояния" : диссертация на соискание ученой степени канд. физ.-мат. наук
Выходные данные : Красноярск, 2022
Колич.характеристики :94 с
Коллективы : Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук", Институт физики им. Л.В. Киренского Сибирского отделения РАН
Примечания : Библиогр. : 87
ГРНТИ : 31.15.15
ББК : Г512.3я031 + Е072.510я031
Экземпляры :ДС(1)
Свободны : ДС(1)
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19.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kurilova A. V., Klimenko D. I., Kundelev E. V., Sukhachev A. L., Shulga K. V., Dubavik A. U., Sokolov A. Е.
Заглавие : Chiromagnetic oxide cobalt nanoparticles: synthesis and magnitooptical properties
Коллективы : Российская академия наук, Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН, Казанский (Приволжский) федеральный университет, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022): Book of abstracts/ program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 1, Sect.: Spintronics and magnetic nanostructures. - Ст.A.P59. - P.209-210. - ISBN 978-5-94469-051-7
Примечания : Cited References: 7. - The reported study was funded by RFBR, project number 20-32-90144
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Solodova O. V., Sokolov A. Е., Ivanova O. S., Volochaev M. N., Lapin I. N., Goncharova D. A., Svetlichnyi V. A.
Заглавие : Magneto-optical properties of nanoparticle dispersions based on Fe3O4, obtained by pulse laser ablation in a liquid
Место публикации : Phys. Solid State. - 2022. - Vol. 64, Is. 14. - P.2292-2299. - ISSN 10637834 (ISSN), DOI 10.21883/PSS.2022.14.54331.147. - ISSN 10906460 (eISSN)
Примечания : Cited References: 39. - The authors would like to thank Dr. Phys.-Math. Sci., Professor I.S. Edelman for participating in the discussion of the study results and significant comments when writing the article. This study was supported by the Russian Foundation for Basic Research, grant No. 19-52-52002
Аннотация: The structure, optical and magneto-optical properties of colloidal solutions of iron oxide nanoparticles obtained by pulsed ablation in distilled water, both without additives and with various functional additives: gold-hydrochloric acid, silicon oxide, and polyvinylpyrrolidone, have been studied. It is shown that the main magnetic phase is magnetite Fe3O4. The size distribution of nanoparticles and the degree of their agglomeration depend on the additives. In the absence of the latter, a very wide of size distributions and strong agglomeration of particles are observed. The narrowest distribution curve with a maximum corresponding to ~7 nm and an almost complete absence of agglomeration are observed for particles synthesized in the presence of polyvinylpyrrolidone. The shape of the spectral dependence of magnetic circular dichroism, which generally corresponds to the spectrum of magnetite, undergoes some modifications for various additives, which is associated with defects in the distribution of iron ions between different positions in the crystal.
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