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1.
Preparation and luminescence
properties of the blue-emitting phosphor BaBPO5:Eu2+ / L. Zhang [et al.]> // Sci. Adv. Mater. - 2016. -
Vol. 8
,
Is. 5
. - P. 1086-1092,
DOI
10.1166/sam.2016.2704. - Cited References: 22. - This work was financially supported by the National Natural Science Foundation of China (NSFC Grant no. 51172216) and the Fundamental Research Funds for the Central Universities (Grant no. 2652015022). . - ISSN 1947-2935
Перевод заглавия:
Синтез и люминесцентные свойства синего люминофора BaBPO5:Eu2+
РУБ
Nanoscience & Nanotechnology + Physics, Applied + Physics, Applied
Рубрики:
Energy-transfer
Diodes
Ions
Eu3+
Photoluminescence
Reduction
Tb3+
Кл.слова (ненормированные):
BaBPO5
--
Eu2+
--
Phosphor
--
White light emitting diodes
Аннотация:
Blue-emitting BaBPO5:xEu2+ phosphors were prepared by a high-temperature solid-state reaction route. The crystal phase, luminescence properties, lifetime, and thermal stability were investigated, respectively. The phase analysis indicated that BaBPO5 crystallize with the structure of stillwellite-type compounds. Under the excitation at 310 nm, the phosphor exhibited an asymmetric broad-band blue emission with peak at 410 nm, which was ascribed to the 4f-5d transition of Eu2+. It was further calculated that the dipole-dipole interactions were responsible for a concentration quenching effect in BaBPO5:xEu2+ phosphors at x = 0.08. The lifetime decreased with the increasing concentration of Eu2+ ions. The temperature-dependent emission spectra indicated an excellent thermal stability of the BaBPO5:0.08Eu2+ samples. Surface morphology and CIE coordinate were also investigated. All the properties assessed indicated that the developed blue-emitting BaBPO5:Eu2+ phosphor is a good candidate for application in white-light emitting diodes. © 2016 by American Scientific Publishers.
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Держатели документа:
School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing, China
National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals, Grirem Advanced Materials Co., Ltd., Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Доп.точки доступа:
Zhang, L.; Fang, M.; Huang, Z.; Liu, Y.; Min, X.; Tang, H.; Chen, K.; Guan, M.; Molokeev, M. S.; Молокеев, Максим Сергеевич
}
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2.
Kaptsov, O. V.
Differential constraints and exact solutions of nonlinear diffusion equations / O. V. Kaptsov, I. V. Verevkin> // J. Phys. A. - 2003. -
Vol. 36
,
Is. 5
. - P. 1401-1414,
DOI
10.1088/0305-4470/36/5/315. - Cited References: 29 . - ISSN 0305-4470
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
REDUCTION
Аннотация:
The differential constraints are applied to obtain explicit solutions of nonlinear diffusion equations. Certain linear determining equations with parameters are used to find such differential constraints. They generalize the determining equations used in the search for classical Lie symmetries.
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Держатели документа:
RAS, Inst Comp Modeling, Krasnoyarsk 660036, Russia
ИВМ СО РАН
Institute of Computing Modeling, RAS, Academgorodok, 660036 Krasnoyarsk, Russian Federation
Доп.точки доступа:
Verevkin, I. V.
}
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3.
Synthesis and characterization
of core-shell magnetic nanoparticles NiFe2O4@Au / D. Saykova, S. Saikova, Y. Mikhlin [et al.]> // Metals. - 2020. -
Vol. 10
,
Is. 8
. - Ст. 1075,
DOI
10.3390/met10081075. - Cited References: 45 . - ISSN 2075-4701
Перевод заглавия:
Синтез и характеристика магнитных наночастиц ядро-оболочка NiFe2O4@Au
РУБ
Materials Science, Multidisciplinary + Metallurgy & Metallurgical
Рубрики:
NICKEL FERRITE NANOPARTICLES
GOLD NANOPARTICLES
OXIDATION
REDUCTION
Кл.слова (ненормированные):
nickel ferrite nanoparticles
--
NiFe2O4@Au core-shell nanoparticles
--
synthesis
--
X-ray photoelectron spectroscopy
--
magnetic circular dichroism
Аннотация:
In this study, NiFe2O4@Au core–shell nanoparticles were prepared by the direct
reduction
of gold on the magnetic surface using amino acid methionine as a reducer and a stabilizing agent simultaneously. The obtained nanoparticles after three steps of gold deposition had an average size of about 120 nm. The analysis of particles was performed by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy techniques. The results indicate successful synthesis of core–shell particles with the magnetic core, which consists of a few agglomerated nickel ferrite crystals with an average size 25.2 ± 2.0 nm, and the thick gold shell consists of fused Au0 nanoparticles (NPs). Magnetic properties of the obtained nanoparticles were examined with magnetic circular dichroism. It was shown that the magnetic behavior of NiFe2O4@Au NPs is typical for superparamagnetic NPs and corresponds to that for NiFe2O4 NPs without a gold shell. The results indicate the successful synthesis of core–shell particles with the magnetic nickel ferrite core and thick gold shell, and open the potential for the application of the investigated hybrid nanoparticles in hyperthermia, targeted drug delivery, magnetic resonance imaging, or cell separation. The developed synthesis strategy can be extended to other metal ferrites and iron oxides.
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Держатели документа:
Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Saykova, Diana; Saikova, Svetlana; Mikhlin, Yuri; Panteleeva, Marina; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Belova, E.
}
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4.
Biogenic ferrihydrite nanoparticles
produced by Klebsiella oxytoca: Characterization, physicochemical properties and bovine serum albumin interactions / N. Cazacu, C. G. Chilom, S. Iftimie [et al.]> // Nanomaterials. - 2022. -
Vol. 12
,
Is. 2
. - Ст. 249,
DOI
10.3390/nano12020249. - Cited References: 59. - This research was funded by JINR Themes 02-1-1107-2011/2021, 04-5-1131-2017/2021 and 04-4-1133-2018/2023 and with the financial support of the RO-JINR Projects Nos. 366/11.05.2021 (items 7, 86, 97) and 365/11.05.2021 (items 8, 87 and 98). This work also benefited from the use of the SasView application, originally developed under NSF Award DMR-0520547. SasView also contains the code developed with funding from the EU Horizon 2020 program under the SINE2020 project Grant No 654000. The APC was funded by JINR Theme 02-1-1107-2011/2021, Project No. 366/11.05.2021, item 7. This study used the infrastructure of the Applied Genetics Resource Facility of MIPT (Suport Grant 075-15-2021-684) . - ISSN 2079-4991
РУБ
Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
MAGNETIC-PROPERTIES
REDUCTION
MOSSBAUER
FERRITIN
DOCKING
BINDING
Кл.слова (ненормированные):
biogenic ferrihydrite nanoparticles
--
the binding mechanism
--
energy transfer
--
protein stability
--
molecular docking
Аннотация:
The synthesis of nanoparticles inside microorganisms is an economical alternative to chemical and physical methods of nanoparticle synthesis. In this study, ferrihydrite nanoparticles synthesized by Klebsiella oxytoca bacterium in special conditions were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), small-angle X-ray (SAXS), UV-Vis spectroscopy, fluorescence, fluorescence resonance energy transfer (FRET), and molecular docking. The morphology and the structure of the particles were characterized by means of SEM and SAXS. The elemental content was determined by means of the EDS method. The absorption properties of the ferrihydrite nanoparticles were investigated by UV-Vis spectroscopy. The binding mechanism of the biogenic ferrihydrite nanoparticles to Bovine Serum Albumin (BSA) protein, studied by fluorescence, showed a static and weak process, combined with FRET. Protein denaturation by temperature and urea in the presence of the ferrihydrite nanoparticles demonstrated their influence on the unfolding process. The AutoDock Vina and UCSF Chimera programs were used to predict the optimal binding site of the ferrihydrite to BSA and to find the location of the hydrophobic cavities in the sub-domain IIA of the BSA structure.
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Держатели документа:
Univ Bucharest, Fac Phys, Dept Elect Solid State & Biophys, RO-077125 Magurele, Romania.
Horia Hulubei Natl Inst Phys & Nucl Engn, Dept Nucl Phys, RO-077125 Magurele, Romania.
Joint Inst Nucl Res, Dubna 141980, Russia.
Moscow Inst Phys & Technol, Dolgoprudnyi 141701, Russia.
Russian Acad Sci, Siberian Branch, Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Engn Phys & Radio Elect, Phys Dept, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Cazacu, N.; Chilom, C. G.; Iftimie, S.; Balasoiu, M.; Ladygina, V. P.; Stolyar, S. V.; Столяр, Сергей Викторович; Orelovich, O. L.; Kovalev, Y. S.; Rogachev, A. V.
}
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