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Mikhail A. Soldatov

D. Mendeleyev University of Chemical Technology of Russia

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Aziz M. Muzafarov

A. N. Nesmeyanov Institute of Organoelement Compounds

О. А. Серенко

A. N. Nesmeyanov Institute of Organoelement Compounds

Hongzhi Liu

Shandong University

С. В. Кондрашов

Bauman Moscow State Technical University

K. A. Shashkeev

All Russian Scientific Research Institute of Aviation Materials

Mikhail V. Gorlov

D. Mendeleyev University of Chemical Technology of Russia

В. Г. Шевченко

Institute of Synthetic Polymeric Materials

В. В. Киреев

D. Mendeleyev University of Chemical Technology of Russia

N. S. Bredov

D. Mendeleyev University of Chemical Technology of Russia

Andrey S. Esin

D. Mendeleyev University of Chemical Technology of Russia

Cooperative Institutions

Russian Academy of Sciences

A. N. Nesmeyanov Institute of Organoelement Compounds

D. Mendeleyev University of Chemical Technology of Russia

Lomonosov Moscow State University

Moscow State University

Institute of Synthetic Polymeric Materials

All Russian Scientific Research Institute of Aviation Materials

Frumkin Institute of Physical Chemistry and Electrochemistry

State Research Center of the Russian Federation

Kurchatov Institute

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Influence of solvent on the porous structure of degradable phosphazene-siloxane hypercross-linked polymers

Russian Chemical Bulletin (2024)

Ekaterina Karpova A. I. Chernysheva Daria A. Terentyeva Mikhail A. Soldatov

Phosphazene

Siloxane

10.1007/s11172-024-4154-5

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Citations (0)

Fabrication of thermally stable porous films from a cured epoxy resin via the Breath Figures process

Journal of Coatings Technology and Research (2017)

Mikhail A. Soldatov Maria S. Parshina V. V. Makarova О. А. Серенко Aziz M. Muzafarov

10.1007/s11998-017-9968-8

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Citations (3)

Modification of Intumescent Coatings with Porous Zirconium Silicate

ChemistrySelect (2024)

Anna V. Medynskaya E. A. Zheludkova Н. Н. Гаврилова Mikhail A. Soldatov

Abstract Two porous zirconium silicates were synthesized by the interaction of cubic octa(tetramethylammonium)silicate with zirconium oxychloride. The results show that the porosity of the obtained products depends on the synthesis conditions. The surface area of porous zirconium silicate ZrSi‐1 synthesized at room temperature was 3.45 m 2 /g, and the surface area of porous zirconium silicate ZrSi‐2 synthesized when heated to 65 °C was 23.77 m 2 /g. X‐ray diffraction data from ZrSi‐1 and ZrSi‐2 show that their structure is amorphous. The synthesized porous silicates were used as modifiers for intumescent fire‐retardant coatings. The obtained intumescent coatings were tested in a muffle furnace at 600 °C. It was found that the use of porous zirconium silicate in intumescent coatings increases their char expansion, which indirectly shows that the porous zirconium silicate increases the flame‐retardant properties of intumescent coating. Moreover, it was shown that the use of zirconium silicate with higher porosity leads to higher char expansion and as a result to higher efficiency of the fire‐retardant coating. So, the non‐modified coatings, coatings with 0.5 % ZrSi‐1, coatings with 0.5 % ZrSi‐2, coatings with 1 % ZrSi‐1, coatings with 1 % ZrSi‐2, had the char expansion of 17, 23, 32, 36, 38 times, respectively.

Intumescent

10.1002/slct.202400118

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Degradable covalently-linked siloxane-phosphazene polymer for drug loading and releasing

Reactive and Functional Polymers (2022)

Anna I. Chernysheva Ekaterina Karpova Daria A. Terentyeva Nikita S. Tsivkovsky Yuriy M. Selivantev

Rhodamine 6G

Siloxane

Phosphazene

Tetramethylammonium

10.1016/j.reactfunctpolym.2022.105491

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A POSS‐Phosphazene Based Porous Material for Adsorption of Metal Ions from Water

Chemistry - An Asian Journal (2019)

Mikhail A. Soldatov Hongzhi Liu

Abstract The development of adsorptive materials continues to be an important area of research for removal of heavy metal ions from waste water. The adsorption capacity can be modulated by both physical and chemical modification of the adsorbent. Herein, we combine the unique properties of polyhedral oligomeric silsesquioxane (POSS) and organocyclophosphazene as the building units to synthesize a hybrid porous material, abbreviated as PN‐POSS. The synthetic method follows a Heck reaction between hexa(4‐bromophenoxy)cyclotriphosphazene and octavinylsilsesquioxane (OVS). The Brunauer–Emmett–Teller (BET) analysis shows that the material possesses micro‐ and mesopores of 1.5 and 3.8 nm size and a surface area on the order of 500 m 2 g −1 . These attributes in combination with the donor ability of the phosphazene units qualify the material for high adsorption of Pb 2+ , Hg 2+ and Cu 2+ ions with maximal adsorption capacities on the order of 1326, 1927 and 2654 mg g −1 , respectively. The adsorbent exhibits a good regeneration performance and can be effectively used for water treatment.

Phosphazene

Silsesquioxane

Specific surface area

10.1002/asia.201901356

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Citations (37)

Electrically-conductive hybrid polymer composite materials on the basis of noncovalent functional carbon nanotubes

Proceedings of VIAM (2016)

С. В. Кондрашов A.G. Gunyaeva K. A. Shashkeev D. Ya. Barinov Mikhail A. Soldatov

10.18577/2307-6046-2016-0-2-10-10

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Citations (4)

Phosphazene functionalized silsesquioxane-based porous polymers for absorbing I2, CO2 and dyes

Yiqi Wang Mikhail A. Soldatov Qingzheng Wang Hongzhi Liu

Silsesquioxane

Phosphazene

Methylene blue

10.1016/j.polymer.2021.123491

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Citations (34)

Preparation of Porous Polymers Based on the Building Blocks of Cyclophosphazene and Cage‐like Silsesquioxane and Their Use as Basic Catalysts for Knoevenagel Reactions

Chemistry - An Asian Journal (2021)

Mikhail A. Soldatov Yiqi Wang Hongzhi Liu

Abstract Phosphazene‐containing porous materials are of a great interest due to their unique properties, caused by the synergetic presence of nitrogen and phosphorus atoms, and have found applications as adsorbents, basic catalysts, etc. On the other hand, cage‐like silsesquioxanes are ideal building blocks for the preparation of covalently‐linked porous materials. Here two new phosphazene‐functionalized organosilsesquioxane cage‐based porous polymers were synthesized successively by a Friedel‐Crafts reaction of hexapyrrolylcyclotriphosphazene with octavinylsilsesquioxane in the presence of AlCl 3 and CF 3 SO 3 H as catalysts. The nature of acid catalysts barely influenced the character of pores due to the interaction of catalysts with basic nitrogen atoms of phosphazene units. The obtained polymers exhibited high efficiency as metal‐free catalysts for the Knoevenagel reaction. This work opens new perspectives in the use of porous polymers based on cage‐like organosiloxane compounds as basic catalysts for various reactions.

Knoevenagel condensation

Phosphazene

Silsesquioxane

10.1002/asia.202100444

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Citations (13)

Organosilicon fluoro-containing polymer brushes based on epoxy matrix: XPS analysis

Russian Chemical Bulletin (2016)

А. В. Наумкин Mikhail A. Soldatov Dmitry R. Streltsov A. Yu. Pereyaslavtsev I. O. Volkov

Organosilicon

Matrix (chemical analysis)

Surface Modification

10.1007/s11172-016-1415-y

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Citations (5)

Novel Approach for the Synthesis of Chlorophosphazene Cycles with a Defined Size via Controlled Cyclization of Linear Oligodichlorophosphazenes [Cl(PCl2=N)n–PCl3]+[PCl]6–

Mikhail V. Gorlov N. S. Bredov Andrey S. Esin Igor S. Sirotin Mikhail A. Soldatov

Despite a significant number of investigations in the field of phosphazene chemistry, the mechanism of this class cyclic compounds formation is still poorly studied. At the same time, a thorough understanding of this process is necessary both for the direct production of phosphazene rings with a given size, and for the controlled cyclization reaction when it is secondary and undesirable. Here we have synthesized a series of short linear phosphazene oligomers with the general formula Cl[PCl2=N]n–PCl3+PCl6– and studied their tendency to form cyclic structures under the influence of elevated temperature or in the presence of nitrogen-containing agents, such as hexamethyldisilazane (HMDS) or ammonium chloride. It was established that linear oligophosphazenes are inert when heated in the absence of the mentioned cyclization agents, and the formation of cyclic products occurs only when these agents are involved in the process. It is for the first time shown the ability to obtain the desired size phosphazene cycle from corresponding linear chain. Known obstacles like side interaction with the PCl6– counterion and a tendency of longer chains to undergo crosslinking elongation instead of cyclization are still relevant and ways to overcome them are being discussed.

Phosphazene

10.20944/preprints202105.0397.v1

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Citations (2)