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Magnetite Nanocrystals with a High Magnetic Anisotropy Constant due to the Particle Shape / S. V. Stolyar [et al.] // Tech. Phys. Lett. - 2019. - Vol. 45, Is. 9. - P. 878-881, DOI 10.1134/S1063785019090116. - Cited References: 20. - This study was supported in part by the Russian Foundation for Basic Research, Government of Krasnoyarsk Krai, Science Foundation of Krasnoyarsk Krai within research projects nos. 18-42-240006 (“Nanomaterials with Magnetic Properties Determined by the Nanostructure Topological Features”) and 18-43-243003 (“Sonochemical Treatment of Magnetic Nanoparticles As a Way of Modifying Their Properties”) and a special program of the Ministry of Education and Science of the Russian Federation for Siberian Federal University. . - ISSN 1063-7850
Кл.слова (ненормированные):
magnetite -- nanoparticles -- magnetic anisotropy -- polysaccharide
Аннотация: Chemical solution deposition in the presence of arabinogalactan makes it possible to prepare magnetite nanocrystals in the form of square plates with a high aspect ratio (~1/9). The magnetic anisotropy constant of particles is several times higher than that of spherical magnetite particles, which enhances the hysteretic properties with a small particle volume retained.

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Публикация на русском языке

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Subdivision of Federal Krasnoyarsk Science Center,Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Federal Research Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
B.B. Gorodovikov Kalmyk State University, Elista, 358000, Russian Federation
Al-Qasim Green University, College of Biotechnology, Babylon, Iraq

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Chekanova, L. A.; Чеканова, Лидия Александровна; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Cheremiskina, E. V.; Bairmani, M. S.; Eroshenko, P. E.; Ерошенко, П. Е.; Iskhakov, R. S.; Исхаков, Рауф Садыкович
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Theoretical DFT interpretation of infrared spectra of biologically active arabinogalactan sulphated derivatives / A. S. Kazachenko, F. N. Tomilin, A. A. Pozdnyakova [et al.] // Chem. Pap. - 2020. - Vol. 74, Is. 11. - P. 4103-4113, DOI 10.1007/s11696-020-01220-3. - Cited References: 52. - The reported work was funded by RFBR and the government of Krasnoyarsk region according to the research project. 18-43-242003. The study was carried out using equipment of the Krasnoyarsk Regional Center of Research Equipment, Federal Research Center "Krasnoyarsk Science Center SB RAS". Publication was also partially supported by Project FSWM-2020-0033 of Russian Ministry of Science and Education.The authors are grateful to I.V. Korolkova for IR-spectra. . - ISSN 2585-7290. - ISSN 1336-9075

РУБ Chemistry, Multidisciplinary
Рубрики:
DENSITY-FUNCTIONAL THEORIES
ASTRAGALUS POLYSACCHARIDE
ANTICOAGULANT
Кл.слова (ненормированные):
Arabinogalactan -- Sulphated arabinogalactan -- FTIR-spectra -- Molecular structure -- Density functional theory
Аннотация: Arabinogalactan (AG) and sulphated arabinogalactans which are products of chemical modification of arabinogalactan polysaccharide with anticoagulant properties were studied by experimental infrared (IR) spectroscopy combined with density functional theory simulations. Mutual analysis of experimental and theoretical IR frequencies indicates that the discrepancies between experiment and theory is caused by the influence of –OH groups, which led to the energy shift and broadening of the absorption IR bands. It was found that theoretical and experimental spectra correspond well within the 3000–4000 cm−1 spectral region. Addition of sulphur group in AG structure causes hydroxyl group to become accessible for further sulphation. The difference between experimental and theoretical IR frequencies of sulphated AG derivatives is greater than that of the parent arabinogalactan due to the increase in the number of possible isomers and conformers.

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Держатели документа:
FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
FRC Krasnoyarsk Sci Ctr SB RAS, Kirensky Inst Phys SB RAS, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia.
Natl Res Tomsk State Univ, Lenin Ave 36, Tomsk 634050, Russia.
Kyungpook Natl Univ, Dept Chem, 80 Daehak Ro, Daegu 41566, South Korea.
Kyungpook Natl Univ, Green Nano Mat Res Ctr, 80 Daehak Ro, Daegu 41566, South Korea.

Доп.точки доступа:
Kazachenko, Aleksandr S.; Tomilin, F. N.; Томилин, Феликс Николаевич; Pozdnyakova, Anastasia A.; Vasilyeva, Natalia Yu; Malyar, Yuriy N.; Kuznetsova, Svetlana A.; Avramov, P. V.; Аврамов, Павел Вениаминович; RFBRRussian Foundation for Basic Research (RFBR); government of Krasnoyarsk region [18-43-242003]; Russian Ministry of Science and EducationMinistry of Education and Science, Russian Federation [FSWM-2020-0033]
}
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Polysaccharide-coated iron oxide nanoparticles: Synthesis, properties, surface modification / S. V. Stolyar, V. V. Krasitskaya, L. A. Frank [et al.] // Mater. Lett. - 2021. - Vol. 284. - Ст. 128920, DOI 10.1016/j.matlet.2020.128920. - Cited References: 12. - The reported study was carried out with the financial support of the Russian Foundation for Fundamental Research , the Government of the Krasnoyarsk Territory , the Krasnoyarsk Territory Fund for Support of Scientific and Technical Activity in the framework of scientific Project No. 18-43-243003. This work was supported by the Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools (project no. MK-1263.2020.3) . - ISSN 0167-577X
Кл.слова (ненормированные):
Magnetic materials -- Nanoparticles -- Biomaterials -- Magnetic materials -- Polysaccharide
Аннотация: In this work, magnetite nanoparticles coated with polysaccharides were synthesized. Arabinogalactan and chitosan were used as polysaccharides. The possibilities of immobilization of biospecific molecules on the surface of the obtained composites were studied. Experiments on covalent immobilization of biospecific molecules on magnetic nanoparticles coated with a polysaccharide showed a high density of immobilized molecules. This suggests the use of such materials in bioanalytical systems or as affinity sorbents.

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Держатели документа:
Krasnoyarsk Scientific Center, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Biophysics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Astrakhan State University, Astrakhan, Russian Federation
University of Al-qasim Green, College of Biotechnology, Iraq

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Krasitskaya, V. V.; Frank, L. A.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Chekanova, L. A.; Чеканова, Лидия Александровна; Gerasimova, Yu. V.; Герасимова, Юлия Валентиновна; Volochaev, M. N.; Волочаев, Михаил Николаевич; Bairmani, M. S.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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