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  1. No Access

    Article

    Photochemistry of Radical Cations of Some Organic Oxygen-Containing Compounds in Frozen Matrices

    The review is dedicated to the photochemical reactions of radical cations (RC) of various organic oxygen-containing compounds stabilized in low-temperature matrices. The nature of RC and the products of their ...

    M. Ya. Melnikov, O. I. Gromov, V. I. Pergushov… in Moscow University Chemistry Bulletin (2024)

  2. No Access

    Article

    New Solutions in Decarbonization Technology

    It is shown that the removal of CO2 from a gas can be implemented in a disk film absorber using water as an absorbent. The proposed technical solution is focused on solving various decarbonization problems.

    L. A. Tjurina, E. A. Babakov, M. Ya. Melnikov in Moscow University Chemistry Bulletin (2023)

  3. No Access

    Article

    Changes in the Physicochemical and Biological Properties of Aqueous Solutions under the Influence of Factors Modeling the Conditions of Space Flight

    The results of studies in which the relationship of the self-organization, physicochemical properties, and bioeffects in dilute aqueous solutions of various biologically active substances sustained under natur...

    I. S. Ryzhkina, L. I. Murtazina, Y. V. Kiseleva… in Moscow University Chemistry Bulletin (2023)

  4. No Access

    Article

    Phototransformations of 1,3-Butadiene Diepoxide Radical Cations in CF3CCl3 at 77 K

    The nature of radical cations stabilized in irradiated frozen 1,3-butadiene diepoxide/CF3CCl3 solutions was determined via low-temperature UV/Vis spectroscopy, electron paramagnetic resonance spectroscopy, and qu...

    D. A. Pomogailo, O. I. Gromov, V. I. Pergushov… in Moscow University Chemistry Bulletin (2023)

  5. No Access

    Article

    pH-Sensitive Paramagnetic Probe 4-(Methylamino)-2-Ethyl-5,5-Dimethyl-4-Pyridine-2-Yl-2,5-Dihydro-1H-Imidazol-1-Oxyl for Controlling Microacidity Inside Poly-D,L-Lactide Films during Degradation In Vitro

    Monitoring of the acidity inside the pores of aliphatic polyesters during their swelling and hydrolysis is important challenge of biomedicine. pH-sensitive nitroxyl radical 5,5-dimetyl- 4-dimetylamino-2-ethyl-...

    T. A. Ivanova, M. Ya. Melnikov, P. S. Timashev… in Russian Journal of Physical Chemistry B (2023)

  6. No Access

    Article

    Synthesis of Iron Oxide Nanoparticles by Thermal Decomposition of Cryochemically Modified Precursors

    Highly dispersed powders of superparamagnetic iron oxides of various morphologies are obtained by the thermal decomposition of formate and ammonium citrate of iron(III), subjected to cryochemical treatment by ...

    O. I. Vernaya, A. S. Shumilkin, A. V. Shabatin… in Moscow University Chemistry Bulletin (2022)

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    Article

    Cryoformation and Properties of Dioxidine/Gelatin Systems

    Cryoforming of gelatin systems with the antibacterial drug dioxidine is carried out. The study considers the effect of systems’ synthesis conditions (gelatin concentration in the precursor solution) on their s...

    O. I. Vernaya, A. S. Shumilkin, D. L. Karlova… in Moscow University Chemistry Bulletin (2022)

  8. No Access

    Article

    Desulfurization of a Low-Pressure Gas: Technology and Equipment for Oil Recovery

    Technology and equipment are developed for purifying low-pressure gas flows from hydrogen sulfide and mercaptan contaminants. The efficiency of the catalytic desulphurization up to a residual content of sulfur...

    V. P. Meshalkin, E. T. Babakov, N. A. Bumagin… in Moscow University Chemistry Bulletin (2022)

  9. No Access

    Article

    Photochemistry of 2,2-Dimethyl- and 2,2,3-Trimethyloxirane Radical Cations in Freon Matrices at 77 K

    The nature of radical cations (RCs) stabilized in irradiated frozen solutions of 2,2-dimethyl- and 2,2,3-trimethyloxirane in Freons (CFCl3, CF3CCl3) was determined by means of EPR and UV/Vis spectroscopy as well ...

    I. D. Sorokin, O. I. Gromov, V. I. Pergushov… in Moscow University Chemistry Bulletin (2021)

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    Article

    Cryochemical Modification of Medicinal Substances: The Effect of the Carrier Gas Flow Rate on the Physicochemical Properties of Nanoforms of the Antibacterial Drug Dioxidine

    A combined cryochemical method is proposed for the dimensional and structural modification of drugs. This method forms a molecular flow of a substance combined with a flow of carrier gas, with subsequent conde...

    T. I. Shabatina, Yu. N. Morozov, A. V. Solovyov… in Moscow University Chemistry Bulletin (2021)

  11. No Access

    Article

    Photochemistry of Oxirane-Derived Radical Cations in Freonic Matrices at 77 K

    The data on the structure and the features of the photochemical reactions for radical cations (RCs) derived from various oxiranes (epoxides) that can be stabilized in Freon matrices at 77 K are summarized. The...

    M. Ya. Melnikov, I. D. Sorokin, O. I. Gromov… in Moscow University Chemistry Bulletin (2021)

  12. No Access

    Article

    Sorption of Water Vapor by Gelatin-Based Polymers: Estimation of Rate and Degree of Sorption Using the Spin-Probe Method

    The spin-probe method is applied to estimate the rate and degree of sorption of water vapor by gelatin-based polymers. The rate and the sorption degree of gelatins are shown to be affected by the extent that t...

    E. M. Zubanova, E. N. Golubeva, M. Ya. Melnikov… in Moscow University Chemistry Bulletin (2020)

  13. No Access

    Article

    The Synthesis of Maghemite Nanoparticles by Thermal Decomposition of Cryochemically Modified Iron(III) Acetylacetonate

    Maghemite nanoparticles of 40 to 150 nm are obtained by the thermal decomposition of preliminarily cryochemically modified iron acetylacetonate. The composition and structure of the obtained particles and cryo...

    O. I. Vernaya, A. S. Shumilkin, V. P. Shabatin… in Moscow University Chemistry Bulletin (2020)

  14. No Access

    Article

    Low-Temperature Synthesis and Antibacterial Activity of Hybrid Systems of Gentamicin Sulfate with Copper and Iron Nanoparticles

    Cryochemical modification methods are used to obtain hybrid composites of the antibacterial drug gentamicin sulfate, as well as copper and iron nanoparticles, which are promising precursors of the targeted dru...

    O. I. Vernaya, V. P. Shabatin, A. M. Semenov… in Moscow University Chemistry Bulletin (2020)

  15. No Access

    Article

    Sample Preparation of Biological Tissues and Cells for the Time-of-Flight Secondary Ion Mass Spectrometry

    The review is devoted to the application of time-of-flight secondary ion mass spectrometry (ToF–SIMS) to the analysis of biological tissues and cells. The invention of cluster primary ions significantly improv...

    A. A. Gulin, V. A. Nadtochenko, V. N. Pogorelova… in Journal of Analytical Chemistry (2020)

  16. No Access

    Article

    Synthesis and Biological Activity of Hybrid Systems of Magnetic Nanoparticles with Antibacterial Drugs

    Abstract—Nanoparticles of iron and magnetite, which have a high potential with respect to their magnetic properties, as well as antibacterial and antiviral activity, are included in hybrid nanosystems with antiba...

    O. I. Vernaya, A. S. Shumilkin, V. P. Shabatin… in Moscow University Chemistry Bulletin (2019)

  17. No Access

    Article

    Nature of HOMO and LUMO Molecular Orbitals in Complexes of Phthalocyanines with p-, d0- and d10-Elements

    The nature of frontier molecular orbitals in complexes of phthalocyanines with p-, d0-, and d10-elements (magnesium, zinc, aluminum, gallium, and silicon) has been established by means of quantum chemical calcula...

    A. V. Lobanov, M. Ya. Melnikov in Russian Journal of Physical Chemistry B (2019)

  18. No Access

    Article

    Impregnation of Polycarbonate by Paramagnetic Probe 2,2,6,6-Tetramethyl-4-Hydroxy-Piperidine-1-Oxyl (TEMPOL) in Supercritical CO2

    The aim of the research was to test the advantages of spin probe electron paramagnetic resonance approach in studying polymers impregnation with organic molecules in supercritical CO2 (scCO2) The impregnation of ...

    A. A. Akovantseva, V. N. Bagratashvili, N. A. Chumakova… in Applied Magnetic Resonance (2018)

  19. No Access

    Article

    Polymer nanoparticles loaded with FeCl-tetraphenylporphyrin for binary catalytic therapy of neoplasms

    In order to study the possibility of using a metal complex of the porphyrin series, FeIIICl-tetraphenylporphyrin (FeClTPP), and its polymeric form as antitumor agents for binary catalytic therapy, the technology ...

    M. R. Faustova, E. D. Nikolskaya, O. A. Zhunina, M. D. Mollaev… in Russian Chemical Bulletin (2018)

  20. No Access

    Article

    Cryochemical synthesis and antibacterial activity of hybrid nanocomposites based on dioxidine containing Ag and Cu nanoparticles incorporated in biopolymer cryostructurates

    Cryochemical synthesis of hybrid nanocomposites based on the antibacterial drug, dioxidine, and metals (Ag, Cu) was performed. According to the data of H1 NMR, UV, and IR spectroscopy, low-temperature argon sorpt...

    O. I. Vernaya, V. P. Shabatin, A. V. Nuzhdina, N. D. Zvukova… in Russian Chemical Bulletin (2017)

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