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Общее количество найденных документов : 16
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 1-10    11-16 
1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Thauer E., Adam V., Wegener S. A., Nolke J. H., Singer L., Ottmann A., Klingeler R., Zakharova G. S., Podval'naya N. V., Andreikov E. I., Puzyrev I. S., Asyuda A., Zharnikov M., Kiselkov D. M., Zhu Q.
Заглавие : Novel synthesis and electrochemical investigations of ZnO/C composites for lithium-ion batteries
Место публикации : Journal of materials science. - 2021. - № 56. - С. 13227–13242
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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2.

Вид документа :
Шифр издания : Г/U 61
Автор(ы) : Khamidullina L. A., Puzyrev I. S., Slepukhin P. A., Pestov A. V., Tobysheva P. D., Burygin G. L., Dorovatovskii P. V., Zubavichus Y. V., Mitrofanova A. V., Khrustalev V. N., Tskhovrebov A. G., Timofeeva T. V., Solari E., Nenajdenko V. G.
Заглавие : Unsymmetrical trifluoromethyl methoxyphenyl β-diketones: effect of the position of methoxy group and coordination at Cu(II) on biological activity
Место публикации : Molecules. - 2021. - Vol. 26, № 21. - Ст.6466
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): copper(ii)--diketonates--cytotoxic activity--antimicrobial activity
Аннотация: Copper(II) complexes with 1,1,1-trifluoro-4-(4-methoxyphenyl)butan-2,4-dione (HL1) were synthesized and characterized by elemental analysis, FT-IR spectroscopy, and single crystal X-ray diffraction. The biological properties of HL1 and cis-[Cu(L1)2(DMSO)] (3) were examined against Gram-positive and Gram-negative bacteria and opportunistic unicellular fungi. The cytotoxicity was estimated towards the HeLa and Vero cell lines. Complex 3 demonstrated antibacterial activity towards S. aureus comparable to that of streptomycin, lower antifungal activity than the ligand HL1 and moderate cytotoxicity. The bioactivity was compared with the activity of compounds of similar structures. The effect of changing the position of the methoxy group at the aromatic ring in the ligand moiety of the complexes on their antimicrobial and cytotoxic activity was explored. We propose that complex 3 has lower bioavailability and reduced bioactivity than expected due to strong intermolecular contacts. In addition, molecular docking studies provided theoretical information on the interactions of tested compounds with ribonucleotide reductase subunit R2, as well as the chaperones Hsp70 and Hsp90, which are important biomolecular targets for antitumor and antimicrobial drug search and design. The obtained results revealed that the complexes displayed enhanced affinity over organic ligands. Taken together, the copper(II) complexes with the trifluoromethyl methoxyphenyl-substituted β-diketones could be considered as promising anticancer agents with antibacterial properties
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3.

Вид документа : Статья из журнала
Шифр издания : 24/T 60
Автор(ы) : Zakharova G. S., Fattakhova Z. A., Ottmann A., Moller L., Thauer E., Klingeler R., Andreikov E. I., Puzyrev I. S., Zhu Q.
Заглавие : TIO2/C nanocomposites prepared by thermal annealing of titanium glycerolate as anode materials for lithium-ion batteries
Место публикации : Journal of materials science. - 2018. - Vol. 53, № 17. - С. 12244-12253
ББК : 24
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: TiO2/C nanocomposites have been synthesized by developing a facile route based on the annealing of titanium glycerolate in inert atmosphere at 250–850 °C. X-ray diffraction studies reveal that the annealing temperature determines the crystal structure of the TiO2 phase in the compounds, which can be amorphous, anatase, and rutile. In contrast, the nanosized rod-like morphology which to a certain extent is predefined by the titanium glycerolate precursor does not depend on the annealing temperature. The carbon content of the TiO2/C composites amounts to 16–29 wt% and shows up, e.g., in the characteristic Raman D and G bands. Anatase-structured TiO2/C, which is obtained at 600 °C, exhibits the best electrochemical performance among the studied materials. Without the addition of carbon black, it reaches an initial specific discharge capacity of 378 mA h g−1 at 100 mA g−1 and exhibits excellent rate capability with a capacity of 186 mA h g−1 at 1000 mA g−1.
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4.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Solovyova Y. V., Puzyrev I. S., Pestov A. V.
Заглавие : Application of aluminum diketonates in polymerization catalysisε-caprolactone
Место публикации : Mendeleev 2021: book of abstracts XII international conference on chemistry for young scientists. - Saint Petersburg, 2021. - С. 778
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Evseev M. E., Kholmogorova A. S., Neudachina L. K., Pestov A. V., Puzyrev I. S., Osipova V. A., Adamova L. V.
Заглавие : N-Substituted-3-aminopropylsilsesquioxanes: synthesis, physicochemical properties, and application
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1154-1160
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): silsesquioxanes--sol-gel--carbon paste electrodes--rubeanic acid--determination of silver(i)
Аннотация: Synthesis and study of the physicochemical properties of silsesquioxanes modified with 3-aminopropyl, 2-aminoethyl-3-aminopropyl, and dithiooxamide groups was carried out. The obtained sorbents were characterized by thermal stability, porosity, and a high degree of functionalization; the concentration of groups grafted to the particle surface reached 2.80 mmol g−1. Modified silsesquioxanes were used as an electroactive substance for the development of indicator carbon paste electrodes (CPEs). When using a CPE with a 5% dithiooxamidated silsesquioxane content, the conditions selected for potentiometric titration of aqueous solutions containing silverI were pH 3–4, the titrant was potassium iodide. The designed sensor was successfully tested by analyzing a standard sample and a drug for silver ion content.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Solovyova Y. V., Pestov A. V., Puzyrev I. S., Pervova M. G., Kuznetsov V. A., Vlasov I. A., Artemiev G. A.
Заглавие : Synthesis of δ-Valerolactone Using Stable Hydrogen Peroxide Derivatives
Место публикации : Russian Journal of Organic Chemistry. - 2022. - Vol. 58, № 4. - С. 480-483
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The efficiencies of hydrogen peroxide derivatives in the Baeyer–Villiger oxidation of cyclopen­tanone to δ-valerolactone have been compared. The oxidants used were hydrogen peroxide in acetic, formic, or trifluoroacetic acid, magnesium and sodium monoperoxyphthalates, cumene hydroperoxide, and tert-butyl hydroperoxide. The oxidation was carried out in water, aqueous methanol, and water–ethyl acetate. Sodium and magnesium monoperoxyphthalates turned out to provide high conversion and selectivity under mild conditions.
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7.

Вид документа : Статья из журнала
Шифр издания : Г/A 22
Автор(ы) : Puzyrev I. S., Andreikov E. I., Osipova V. A., Zakharova G. S., Podval'naya N. V.
Заглавие : Adsorption properties of mesoporous carbon synthesized by pyrolysis of zinc glycerolate
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 5. - С. 805-810
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Mesoporous carbon of lamellar morphology was synthesized by the thermal decomposition of zinc glycerolate in an inert atmosphere followed by the removal of zinc oxide from the ZnO/C composite. The obtained material was characterized by scanning electron microscopy, Raman spectroscopy, and low-temperature adsorption of nitrogen. Mesoporous carbon is remarkable for a high adsorption rate of methylene blue dye from aqueous solutions with the maximum adsorption capacity toward the dye equal to 1680 mg g−1.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gabov I. S., Kuznetsov V. A., Puzyrev I. S., Pestov A. V.
Заглавие : Addition of the oxirane derivatives to CO2 catalyzed by Lewis bases under mild conditions
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1118-1123
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): cyclic carbonates--carbon dioxide--lewis bases--quantum chemical calculations
Аннотация: The addition of the oxirane derivatives to CO2 was found to occur without Lewis acid involvement but requires the presence of the Lewis base. The reaction was carried out at atmospheric pressure by CO2 bubbling through the starting ether in the presence of a source of halide anion or trichloroacetate anion, which provides the formation of ethylenecarbonate derivatives in preparative amounts. The reactivity of halide anions in the addition of the studied oxirane derivatives to CO2 decreases in the order I− Br− Cl− F− Cl3CCOO−. The quantum chemical calculations of the reaction of CO2 with epichlorohydrin show that the reaction consists of consecutive processes of nucleophilic addition and nucleophilic ipso-substitution, which explains the catalytic effect of the Lewis bases and the order of their activity.
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9.

Вид документа :
Шифр издания : 54/D 49
Автор(ы) : Puzyrev I. S., V'yukhina I. V., Ivanov M., Yatluk Yu. G.
Заглавие : Development of methods for preparation of Nd : YAG nanoparticles
Место публикации : Glass Physics and Chemistry. - 2012. - Vol.38, №4. - С. 427-430
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): synthesis--nanosized precursors --yttrium-aluminum
Аннотация: Methods for synthesis of nanosized precursors for the preparation of yttrium-aluminum garnet from organic-inorganic derivatives of yttrium and aluminum have been developed. It has been shown that most of the methods for carrying out the process result in the formation of precursors with high specific surface area. The precursor obtained using nanosized powder of aluminum oxide and yttrium acetylacetonate is the least agglomerated. The data obtained can be used when preparing optical ceramic from yttrium-aluminum garnet
\\\\Expert2\\nbo\\Glass Physics and Chemistry\\2012, V. 38, N 4, P.427-430.pdf
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10.

Вид документа : Статья из журнала
Шифр издания : 54/E 27
Автор(ы) : Zakharova G. S., Andreikov E., Osipova V. A., Yatluk Yu. G., Puzyrev I. S.
Заглавие : Effect of the titanium glycerolate precursor heat treatment procedure on the morphology and photocatalytic properties of TiO2 nanopowder
Место публикации : Inorganic Materials. - 2013. - Vol.49, №11. - С. 1127-1132
Примечания : Bibliogr. : p. 1132 (20 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): nano powders--photocatalytic property--tio2
Аннотация: We have studied the effect of titanium glycerolate precursor heat treatment on the morphology, structure, and photocatalytic properties of titanium dioxide nanopowders
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