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Seeded RAFT Polymerization of Styrene for the Synthesis of Stable Dispersions of Amphiphilic Block Copolymers and Composite Nanoparticles
Polymer Science - Series B. 2022. Vol. 64. No. 2. P. 124–136.
Serkhacheva N. S., Ryzhikov K. A., Prokopov N., Plutalova A., Bol’shakova A. V., E. V. Chernikova
The regularities of the seeded polymerization of styrene in an aqueous-alcoholic medium in the presence of the seed particles of the triblock copolymer of acrylic acid and butyl acrylate, containing the trithiocarbonate group within the chain and acting as a reversible chain transfer agent, were studied for the first time. The influence of the composition of the dispersion medium and of the concentrations of components on the polymerization kinetics, molecular weight characteristics of the reaction products, and size distribution of the resultant particles was evaluated. Immobilization of the TiO2 nanoparticles on the polymeric particles of the block copolymers in the course of the seeded polymerization of styrene was carried out. Stable suspensions of the hybrid particles with an average diameter of 60 to 130 nm, comprising TiO2 and the block copolymer of acrylic acid, butyl acrylate, and styrene, were obtained.
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
Shi R., Yu Y., Chibisov A., International Journal of Hydrogen Energy 2025 Vol. 107 P. 52–62
Cyanide containing wastewater can cause livestock death and reduce agricultural production and electrochemical reduction of cyanide (CNRR) is a promising way to eliminate its harm and turn waste into valuable products. However, the reaction mechanism and function of electrocatalysts for CNRR have not been fully understood yet. Herein we identify a two-dimensional (2D) conductive copper-organic ...
Added: October 11, 2026
Zhukov A., Chen F., Zeng Y. et al., Nanoscale 2026 Vol. 18 No. 36 P. 19223–19253
Colloidal semiconductor nanocrystals have emerged as promising materials for next-generation light-emitting diodes (LEDs) owing to their solution processability, tunable emission wavelengths, narrow emission linewidths, and high photoluminescence quantum yields. Among them, anisotropic nanocrystals, including one-dimensional nanorods (NRs) and two-dimensional nanoplatelets (NPLs), offer additional opportunities for controlling transition dipole moment orientation and light out-coupling efficiency. These ...
Added: October 2, 2026
Мальцева В. Е., Ananyev I., Milevskii N. et al., Molecular Systems Design and Engineering 2026 Vol. 11 No. 7 P. 691–704
The use of hydrophobic deep eutectic solvents (DESs) as extractants for metal ion separation is largely due to the ease of their preparation and the possibility of modifying them depending on the composition of the metal mixture to be separated. However, the most common approach to DES modification involves the replacement of the extractant, while ...
Added: October 2, 2026
Мальцева В. Е., Ananyev I., Golubev A. V. et al., Russian Journal of Inorganic Chemistry 2026 Vol. 71 P. 724–736
Two voluminous polymer silver(I) salts of perchlorinated dodecoborate clusters, {[(Me2CO)Ag(μ-Me2CO)2Ag(Me2CO)][μ-B12Cl12]}n (1) and {[DMFAg(μ-DMF)2AgDMF][μ-B12Cl12]}n (2) were synthesized. The 35Cl nuclear quadrupole resonance (NQR) spectroscopy supplemented with the X-ray diffraction data was applied for identifying and analyzing noncovalent interactions Cl···X in these salts. Whereas in X-ray diffraction, noncovalent interactions are associated with the presence of the shortened ...
Added: October 2, 2026
Мальцева В. Е., Rozhkov A., Ananyev I. et al., Inorganic Chemistry 2026 Vol. 65 No. 22 P. 12484–12496
Despite the well-established importance of chalcogen bonding in crystal engineering and supramolecular chemistry, experimental charge density data for TeII-centered chalcogen bonds have remained entirely absent, leaving the electronic nature of these interactions uncharacterized at the level of directly measured electron density. Here, we report the first high-resolution X-ray diffraction (HRXRD) study of TeII-centered chalcogen bonds, ...
Added: October 2, 2026
Ostovari Moghaddam A., Mehrabi-Kalajahi S., Solizoda I. A. et al., Metals and Materials International 2026 P. 1–9
Off-stoichiometric boron-doped chemically complex intermetallic alloys (CCIMAs) have recently emerged as a new avenue for overcoming the low temperature brittleness of ordered superlattices. However, their behavior at high temperatures remains unexplored. In this study, a novel (Ni39.6Co29.3Cr10Al15.8Ta3.3Nb2)98.5B1.5 CCIMA was prepared and its oxidation resistance over a wide temperature range (500 °C–950 °C) was studied. The ...
Added: October 1, 2026
Kashpurovich I., Oleynichenko A., Stegailov V., Supercomputing Frontiers and Innovations 2026 Vol. 13 No. 1 P. 52–73
We report a high-performance implementation of the resolution-of-the-identity Hartree–Fock method that fully exploits the permutational symmetry of three-center electron repulsion integrals (ERI). The present implementation adopts a hybrid MPI+OpenMP parallelization strategy. Two different algorithmic approaches (with and without the pre-transformation of ERIs) are compared. A custom data layout introduced previously is employed. Designed to efficiently ...
Added: September 28, 2026
Li Y., Han J., Zaman N. et al., ACS Applied Materials & Interfaces 2026 Vol. 18 No. 39 P. 54241–54251
The development of lead sulfide (PbS) quantum dot (QD) photodetectors for short-wave infrared (SWIR) applications has been fundamentally limited by the thermodynamic instability of large PbS QD facets, which leads to aggregation and epitaxial fusion. In this work, robust thermodynamic stabilization was achieved by introducing methylammonium chloride (MACl) in PbS QD surface passivation, as validated ...
Added: September 26, 2026
D.E. Roshchin, Torkunov M. K., Shiyanova K. A. et al., Polymer Engineering and Science 2025 Vol. 65 No. 1 P. 290–298
The influence of cavitation-generated free radicals on the suspension polymerization of n-butyl methacrylate under ultrasonic irradiation was investigated experimentally and by kinetic modeling. A kinetic model of radical polymerization was proposed, considering the interaction of free radicals generated in cavitation bubbles with both monomer molecules and free radicals formed within the monomer droplets. It was found ...
Added: February 2, 2025
Guzelia I. Sadrtdinova, Daniil A. Bardonov, Konstantin A. Lyssenko et al., Mendeleev Communications 2023 Vol. 33 No. 3 P. 357–359
Mononuclear [CpNd(BH4)2L] borohydrides comprising
L = 1,3,5-trimethyl-1,3,5-triazacyclohexane (Me3tach) and
L = 1,4,7-trimethyl-1,4,7-triazacyclononane (Me3tacn) were
obtained and structurally characterized. Their catalytic
activity in coordination–insertion ring-opening polymerization
of e-caprolactone was studied. ...
Added: January 18, 2024
D. E. Roshchin, Patlazhan S. A., Berlin A. A., European Polymer Journal 2023 Vol. 190 Article 112002
The free-radical polymerization inside monomer droplets surrounded by an immiscible liquid of the initiator solution is studied before the gel effect by means of the generalized method of moments taking into account diffusion of radicals and polymer chains. The influence of the droplet radius and initiator concentration in the surrounding phase on the polymerization kinetics ...
Added: January 8, 2024
E. V. Chernikova, Mineeva K. O., Polymer Science - Series C 2022 Vol. 64 No. 1 P. 1–25
The review addresses the synthesis of copolymers with the controlled distribution of monomer units (random, gradient, block-random, block-gradient, multiblock copolymers) by reversible deactivation radical polymerization and the ways of purposeful variation in the sequence of units in macromolecules during the synthesis. The effect of chain microstructure on the properties of these copolymers is discussed. ...
Added: October 27, 2022
Ilya E.Nifant'ev, Vinogradov A., Vinogradov A. et al., European Polymer Journal 2022 Vol. 176 Article 111397
Long-chain branching is an efficient tool to design and produce polyolefins with enhanced mechanical characteristics, physical properties, and processability. In the synthesis of long-chain branched polyethylene (LCB PE), constrained geometry complexes (CGCs) of Ti (IV) [(η5-C5Me4)SiMe2NtBu]TiX2 (X = Cl, Ti1; X = alkyl) are highly effective at elevated temperatures. However, further development of polyolefin technologies ...
Added: September 12, 2022
Nifantiev I., Komarov P., Ovchinnikova V. et al., Polymers 2020 Vol. 12 P. 2273
Homogeneity of copolymers is a general problem of catalytic coordination
polymerization. In ring-opening polymerization of cyclic esters, the rational design of the catalyst
is generally applied to solve this problem by the equalization of the reactivities of comonomers—
however, it often leads to a reduction of catalytic activity. In the present paper, we studied the
catalytic behavior of BnOH-activated ...
Added: October 28, 2020
Golubenko D. V., Van der Bruggen B., Yaroslavtsev A. B., Journal of Applied Polymer Science 2020 Vol. 137 No. 19 P. 48656
A novel anion-exchange membrane has been manufactured by chloromethylation and subsequent quaternization of polystyrene within a graft copolymer films based on UV-oxidized polymethylpentene. Particular attention is given to the kinetics of chloromethylation and the influence of the reaction conditions on the properties of the anion-exchange membranes. By means of variation of the polystyrene content and ...
Added: February 27, 2020
Roitershtein D., Minyaev M., Komarov P. et al., Organometallics 2019 Vol. 38 No. 15 P. 2892–2901
Complexes [(1,2,4-Ph3C5H2)2NdCl2K(THF)2]2 (Nd1), {[1,2-Ph2-4-(4-MeOC6H4)C5H2]2NdCl2K(THF)2}2 (Nd2), {[1,2-Ph2-4-(2-MeOC6H4)C5H2]2NdCl2[K(THF)4]}(THF)0.5 (Nd3), and [(1,2,4-Ph3C5H2)2TbCl2K]2 (Tb1) have been synthesized, studied by X-ray diffraction analysis, and used in coordinative chain transfer polymerization (CCTP) of ethylene upon activation by alkyl magnesium derivatives. The complexes Nd1 and Tb1 exhibiting similar molecular structures and the same core type have demonstrated similar catalytic activities. Two types ...
Added: August 13, 2019