Doklady Chemistry最新文献

{"title":"Preparation of Fluoroalkylsilane/Urea Formaldehyde/Polyurethane Modified SiO2@TiO2 Self-Healing Superhydrophobic Composite Coating","authors":"Ke Wang,&nbsp;Jiajun Zuo,&nbsp;Zhihang Wang,&nbsp;Nong Wang","doi":"10.1134/S0012500825601251","DOIUrl":"10.1134/S0012500825601251","url":null,"abstract":"<p>Superhydrophobic materials have attracted widespread attention due to their unique surface structures and properties. However, in practical applications, superhydrophobic surfaces are often affected by external environmental factors, such as chemical corrosion and organic contamination, which can lead to structural damage and the loss of superhydrophobicity. In this work, SiO₂@TiO₂ composite micro/nano particles were prepared by coating photocatalytically active TiO₂ nanoparticles onto the surface of SiO₂. After modification with fluoroalkylsilane (FAS) and blending with urea formaldehyde and polyurethane, a SiO₂@TiO₂–FUP superhydrophobic coating with self-healing capability was fabricated. Specifically, the resulting SiO₂@TiO₂ micro/nanostructure exhibits excellent photocatalytic performance for the degradation of organic pollutants. As a surface modifier, 1H,1H,2H,2H-perfluorooctyltriethoxysilane (FAS-13) provides low surface energy, which is essential for achieving superhydrophobicity. Urea–formaldehyde acts as a microcapsule shell that encapsulates the low-surface-energy compound FAS-13, enabling the coating to exhibit self-healing behaviour. Polyurethane serves as a binder that firmly anchors the hydrophobic particles and self-healing microcapsules to the substrate, thereby enhancing the mechanical durability and stability of the coating. After spray deposition, a stable superhydrophobic coating forms on the substrate surface. Even after immersion in acidic or alkaline solutions or exposure to water-flow impact, no solid particles detach from the surface, and the coating maintains its superhydrophobic properties. More importantly, the coating can restore its superhydrophobicity under UV irradiation after mechanical damage or organic contamination.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"521 1","pages":"1 - 11"},"PeriodicalIF":1.0,"publicationDate":"2026-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational and Crystallographic Insights into 4,4'-Dibromo-2,5-dimethoxy-[1,1'-biphenyl]-2,5'-dione: DFT, Hirshfeld Surface, and Molecular Docking Studies","authors":"Khayra Hammou,&nbsp;Mohammed Cherif Terkhi,&nbsp;Mansour Azayez,&nbsp;Zohra Douaa Benyahlou,&nbsp;Nourdine Boukabcha,&nbsp;Youcef Megrouss,&nbsp;Mohammed Hadj Mortada Belhachemi,&nbsp;Abdelkader Chouaih","doi":"10.1134/S0012500825600464","DOIUrl":"10.1134/S0012500825600464","url":null,"abstract":"<p>The rational design of bioactive molecules is greatly accelerated by computational approaches such as molecular docking, which provide crucial predictions of binding affinity and chemical reactivity. This study aligns with this approach by exploiting these methods to predict the key properties of a novel biphenyl derivative. A combined structural characterization and theoretical investigation using density functional theory (DFT) and molecular docking were performed to predict the structural parameters, chemical reactivity, and biological activity of the compound 4,4'-dibromo-2,5-dimethoxy-[1,1-biphenyl]-2,5-dione. In terms of chemical reactivity, the lower energetic gap and higher electrophilicity index indicate that the studied compound is more chemically reactive and possesses significant electrophilic power. The <i>in-silico</i> study conducted using AutoDock Vina showed strong binding affinity between the compound and two proteins: dihydroxyacetanilide epoxidase (PDB ID: 2BNM) and dehydrogenase (PDB ID: 4XD2)<b>,</b> with binding energies of –7.4 and –7.3 kcal/mol, respectively. Hirshfeld surface analysis was performed to evaluate the intermolecular interactions stabilizing the crystal structure. The results revealed that the primary contributors were O···H/H···O (27.7%), Br···H/H···Br (23.2%), and H···H (13.9%) interactions. These findings establish the compound as a promising candidate for the targeted enzymes and reveal key structural features governing its reactivity and binding. This provides a clear rationale for future medicinal chemistry efforts aimed at developing more potent inhibitors, demonstrating the practical value of combined DFT and docking studies in rational drug design.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 6","pages":"210 - 221"},"PeriodicalIF":1.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation of Precursors of a High-Entropy Metallic System by the Galvanic Replacement Method in Aqueous Solutions","authors":"M. E. Kolpakov,&nbsp;A. F. Dresvyannikov,&nbsp;D. A. Sataraev,&nbsp;E. A. Ermolaeva,&nbsp;R. R. Gainullin","doi":"10.1134/S0012500825601160","DOIUrl":"10.1134/S0012500825601160","url":null,"abstract":"&lt;p&gt;The process of precursor formation for the high-entropy Fe–Ni–Co–Cu–Sn system is investigated by galvanic replacement in aqueous chloride solutions using dispersed aluminum as a reducing agent. Based on synchronized measurements of electrode potential and temperature, as well as analysis of literature data, a multi-stage process mechanism is proposed. It has been established that the galvanic replacement process can be conditionally divided into four stages. At the initial stage 1 (0–30 s) after the introduction of aluminum powder into the solution, the system is characterized by a stable potential (+0.38 V) and a constant temperature. This induction period is associated with a certain delay in the activation of the aluminum surface coated with a passive Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; oxide film. The absence of heat generation directly indicates that exothermic replacement reactions have not yet begun. At the end of the induction period, the second stage begins (30–75 s), that is a sharp, two-stage drop in potential, accompanied by an explosive increase in temperature. The first stage is characterized by a rapid decrease in potential to a quasi-stationary value of about 0.0 V, due to the reduction of Fe&lt;sup&gt;3+&lt;/sup&gt; ions to Fe&lt;sup&gt;2+&lt;/sup&gt;, which act as the primary oxidizer of aluminum. As soon as the local concentration of a strong oxidizing agent (Fe&lt;sup&gt;3+&lt;/sup&gt;) decreases at the surface of the particle, the potential reaches a minimum of –0.38 V. The second stage corresponds to the beginning of the massive co-reduction of Fe&lt;sup&gt;2+&lt;/sup&gt;, Cu&lt;sup&gt;2+&lt;/sup&gt;, Ni&lt;sup&gt;2+&lt;/sup&gt;, Co&lt;sup&gt;2+&lt;/sup&gt;, and Sn&lt;sup&gt;2+&lt;/sup&gt; ions to form a solid precursor phase of a high-entropy alloy. The third stage characterizes the quasi-stationary state and diffusion control of the process (75–170 s). After reaching the peak of reactivity (minimum potential and maximum rate of temperature increase), the potential begins to slowly shift towards positive values up to –0.26 V, and the rate of temperature increase slows down until it reaches a maximum of 90°C. The steady-state potential is a compromise and is determined by the coupled reactions of delayed aluminum dissolution, diffusion-controlled metal deposition, and hydrogen release. At the final stage, a gradual cooling of the reaction mixture is observed at a stable potential, which indicates an almost complete depletion of oxidizing ions in the solution. Exothermic reactions cease, and the system begins to strive for thermodynamic equilibrium with the environment. X-ray fluorescence analysis confirmed the joint deposition of all five metals, the ions of which were initially present in the solution. The obtained elemental composition of the sample is close to the theoretical one for the equimolar Fe–Ni–Co–Cu–Sn system, which indicates the high efficiency of the galvanic replacement method in obtaining multicomponent precursors. Using EDS, a fairly uniform distribution of deposited metals over the surface of the particle","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 6","pages":"187 - 193"},"PeriodicalIF":1.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response Surface Methodology Optimization of Cosolvent-Assisted Transesterification of Waste Cooking Oil to Biodiesel using Eggshell-Derived Li2O–K2O/CaO Nanocatalyst","authors":"Baraa A. Kareem,&nbsp;Abdelrahman B. Fadhil,&nbsp;Ahmed M. Khalaf,&nbsp;Marwa H. Altamer","doi":"10.1134/S0012500825600889","DOIUrl":"10.1134/S0012500825600889","url":null,"abstract":"<p>This study reports the synthesis of Li₂O–K₂O/CaO nanocatalyst via direct impregnation of discarded chicken eggshells with a mixture of LiNO₃ and KNO₃ at various mass ratios, followed by thermal calcination at different temperatures for varying durations at a heating rate of 10°C/min. The typical nanocatalyst (15.0 wt % Li₂O–K₂O/CaO) was analyzed by XRD, FESEM, TEM, EDX, and BET surface area. This nanocatalyst was utilized in the cosolvent-assisted transesterification of waste cooking oil with methanol. The optimization of conditions influencing biodiesel yield was achieved using a Box-Behnken design and response surface methodology (BBD-RSM). The optimized parameters included the catalyst amount, the methanol: WCO molar ratio, the cosolvent transesterification temperature, and the duration. Based on the optimization results, the highest BD yield (96.0%) was attained at 60°C with a 6:1 methanol: WCO ratio for 90 min using 3.0 wt % of the Li₂O–K₂O/CaO nanocatalyst. ¹H NMR measurements indicated a conversion of 98.85%. Furthermore, the nanocatalyst demonstrated a reasonable biodiesel output in the 4th reuse cycle. The synthesis of a catalyst from eggshells offers numerous benefits, making it a sustainable catalyst for biodiesel production<i>.</i></p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 6","pages":"194 - 209"},"PeriodicalIF":1.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compatibilization of EPDM/NBR Blends Using 1-Naphthol: Rheological, Morphological, and Sealing Performance Analysis","authors":"F. A. Amirli,&nbsp;R. F. Khankishiyeva,&nbsp;A. F. Mammadova","doi":"10.1134/S0012500825600981","DOIUrl":"10.1134/S0012500825600981","url":null,"abstract":"<p>The development of high-performance rubber sealants requires elastomer blends with high strength, elasticity, and long-term chemical stability. In this study, ethylene–propylene–diene monomer (EPDM) and nitrile butadiene rubber (NBR) were compounded at a fixed 60/40 ratio. Standard additives such as carbon black (N330), zinc oxide (ZnO), stearic acid, and a sulfur-based curing system were incorporated. 1-Naphthol was introduced as a reactive compatibilizer in amounts of 0, 2, 4, 8, and 10 phr to improve interfacial adhesion between the non-polar EPDM and the polar NBR phases. Rheological analysis demonstrated that moderate concentrations of 1-naphthol (2–4 phr) increased the maximum torque (MH), complex viscosity, and elastic modulus, indicating enhanced crosslink density and stronger interphase interactions. Higher concentrations (≥8 phr) led to partial network disruption and phase separation. The blend containing 4 phr 1-naphthol exhibited the best mechanical performance, with a tensile strength of 14.6 MPa, elongation at break of 280%, and compression set of 22%. SEM micrographs confirmed the formation of a uniform and finely dispersed morphology at 2–4 phr, while excessive compatibilizer loading resulted in coarser domains. These improvements are attributed to hydrogen bonding and π–π stacking interactions between 1-naphthol and the polymer chains, which enhance interfacial compatibility and overall cohesion. Therefore, the optimum compatibilizer concentration for EPDM/NBR sealing materials lies within 2–4 phr, offering enhanced rheological, mechanical, and sealing performance suitable for automotive, oil and gas, and construction applications.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 3","pages":"129 - 137"},"PeriodicalIF":1.0,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nifty Copper Infused Carbon Nanofibers Endorsed with Robust Microbicide Activity and Supercapacitor Properties","authors":"M. Shamshi Hassan,&nbsp;Touseef Amna,&nbsp;Abeer Alyami,&nbsp;Faheem A Sheikh,&nbsp;Myung-Seob Khil","doi":"10.1134/S001250082560021X","DOIUrl":"10.1134/S001250082560021X","url":null,"abstract":"<p>Antibiotics have been known for decades for the management of microorganisms, and their overuse and irrational applications are causing increased bacterial resistance. This study explores the synthesis of a novel composite material comprising carbon nanofibers (CNFs) and copper (Cu) through the electrospinning technique. The electrospinning allowed precise integration of Cu nanoparticles within the CNF matrix, resulting in a synergistic combination of their distinct properties. Scanning electron microscopy (SEM) and Electron probe microanalysis (EPMA) revealed that CNFs were densely covered by Cu nanoparticles. The study investigated structural characteristics of Cu infused CNFs, emphasizing their potential for dual applications as an antimicrobial agent and as a supercapacitor electrode. The antimicrobial efficacy of Cu infused CNFs (Cu@CNFs), is explored in the context of inhibiting bacterial (<i>E. coli</i>) and <i>Candida albicans</i> growth, indicating that it is a durable candidate for biomedical procedures, such as antimicrobial filters, coatings and wound dressings, etc. Concurrently, the electrochemical performance of CNFs composite is evaluated for its suitability as a supercapacitor electrode, taking advantage of the high conductivity of CNFs and pseudo-capacitance of Cu nanoparticles. The results showed specific capacitance of Cu@CNFs displayed a larger specific capacitance of 496 F/g. Additionally, the presence of Cu nanoparticles in the mat generated robust microbicide action.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 4","pages":"160 - 168"},"PeriodicalIF":1.0,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Poly(ε-caprolactone) Carried Out with Zirconium Acetylacetonate: Polymerization Kinetics and Molecular Weight of the Polymers","authors":"K. T. Kalinin,&nbsp;T. M. Sokolov,&nbsp;N. G. Sedush","doi":"10.1134/S0012500825601068","DOIUrl":"10.1134/S0012500825601068","url":null,"abstract":"<p>Kinetics of polymerization of ε-caprolactone initiated by zirconium acetylacetonate Zr(acac)₄ in the presence of ethylene glycol as a co-initiator was studied. Detailed kinetic analysis was performed using Friedman differential isoconversional method in combination with analysis of the enthalpy–entropy compensation effect, resulting in model-free evaluation of the kinetic triplet of the reaction: <span>({{E}_{{{alpha }}}})</span>, <span>({{A}_{{{alpha }}}})</span>, and <span>(fleft( {{alpha }} right))</span>. In addition, the activation energy <span>({{E}_{{{alpha }}}})</span> was calculated using the first-order reaction model. The obtained value <span>({{E}_{{{alpha }}}})</span> = 65.5 ± 2.3 kJ/mol was consistent with the average <span>({{E}_{{{alpha }}}})</span> values calculated by the isoconversional method. It was shown that the sigmoidal nature of polymerization is adequately described by the Kamal autocatalytic model. The effect of reaction temperature and initiator concentration on the molecular-weight characteristics of resulting poly(ε-caprolactone) was investigated. When the reaction temperature is 100–140°C, the molecular weight of the polymer is <i>M</i>_n ≈ 40–50 kDa and the dispersity is <i>Ð</i> ≈ 1.7<i>–</i>2.0.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 3","pages":"119 - 128"},"PeriodicalIF":1.0,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Polypropylene in a Octafluorobutane Medium","authors":"N. A. Rasputin,&nbsp;A. V. Baklykov,&nbsp;G. A. Artem’ev,&nbsp;S. V. Yakovlev,&nbsp;Y. K. Shtaitz,&nbsp;E. D. Ladin,&nbsp;D. S. Kopchuk,&nbsp;G. V. Zyryanov,&nbsp; O. N. Chupakhin","doi":"10.1134/S0012500825600609","DOIUrl":"10.1134/S0012500825600609","url":null,"abstract":"<p>This study investigates the feasibility of using 1,4<i>H</i>-octafluorobutane as a reaction medium for mild suspension polymerization of propylene using a Ziegler–Natta catalyst. The proposed approach enables propylene polymerization under mild conditions at near-room temperatures and atmospheric pressure. The resulting polypropylene has been characterized by IR and NMR spectroscopy, elemental analysis, and differential thermal analysis. The data obtained demonstrate that the synthesized polypropylene has a predominantly atactic structure. The basic advantage of the proposed approach is the reduction in fire and explosion hazards during propylene polymerization by conducting the reaction at atmospheric pressure, room temperature, and in a nonflammable solvent.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 4","pages":"143 - 149"},"PeriodicalIF":1.0,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Phthalocyanine Pigments on the Crosslinking Kinetics and Physico-Mechanical Properties of a Composite Material Based on LDPE","authors":"I. P. Khudiakova,&nbsp;A. A. Ponomareva,&nbsp;E. G. Popovskikh","doi":"10.1134/S0012500825600828","DOIUrl":"10.1134/S0012500825600828","url":null,"abstract":"<p>The article presents the results of a study of the effect of phthalocyanine pigments, in particular, α-modification (Blue 15:3) and excessively halogenated chlorin (Green 7) on the crosslinking kinetics and properties of a composite material based on high-pressure polyethylene (LDPE) processed by compression two-stage chemical foaming. The main attention is paid to the analysis of kinetic curves and physico-mechanical parameters: strength and elongation at break. The study was based on a comparison of the kinetics of crosslinking compositions with the addition of a crosslinking agent, a crosslinking agent and a blue pigment (Blue 15:3), a crosslinking agent and a green pigment (Green 7). Experiments show that the addition of phthalocyanine pigments affects crosslinking kinetics and physico-mechanical properties. Given the uniform nature of the pigments, it is worth paying attention to the different effects of each of them, which is presumably explained by the different molecular compositions. The data obtained open new prospects in compounding, in optimizing technological modes, and can also serve to create LDPE materials with predictable characteristics for compositions processed by two-stage pressing. The paper investigates the changes in the nature of the kinetic curve of the crosslinking process with the addition or absence of pigments of a specific nature, as well as their effect on the physico-mechanical properties of the resulting material. The results of the study confirmed the effect of pigments on the stitching process and, as a result, on the performance properties of the material. Kinetic curves indicated an acceleration of the stitching process, as well as an increase in the density of the resulting vulcanization mesh.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 3","pages":"138 - 142"},"PeriodicalIF":1.0,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Design of New Oligohydroxyethylaminoethylurethane Dendrimers","authors":"A. Maksimov,&nbsp;M. Sazhina,&nbsp;M. Bochkov,&nbsp;M. Kutyreva,&nbsp;G. Kutyrev","doi":"10.1134/S0012500825600907","DOIUrl":"10.1134/S0012500825600907","url":null,"abstract":"<p>This paper presents the synthesis of first- to fourth-generation (G1–G4) oligohydroxyethylaminoethylurethane dendrimers using a two-stage divergent method. The dendrimers were obtained by the reaction of triethanolamine with dimethyl carbonate and diethanolamine in strictly stoichiometric ratios, which ensured high product yields (97.4% for G1, 98.2% for G2, 98.4% for G3, 98.8% for G4). The resulting compounds are resinous substances with a colour range from reddish-brown (G1) to rich amber (G2) to dark brown (G3, G4), with a characteristic sweetish odour. Dendrimers (G1-G4) are soluble in water, dimethyl sulfoxide, dichloromethane, acetone, dioxane, dimethylformamide and alcohols, but are insoluble in chloroform, tetrachloromethane, aromatic and aliphatic hydrocarbons. The structure of dendrimers has been proven by ¹H, ¹³C NMR, IR, titrimetry, and elemental analysis. An increase in molecular weight (498, 1152, 2504, and 5164 g/mol) and the number of hydroxyl groups (6, 12, 24, and 48) has been established with the increase in generation from 1 to 4, as well as the transformation of 1 (G1), 3 (G2), 5 (G3), and 11 (G4) urethane groups into amino groups due to the elimination of carbon dioxide. The thermal stability of dendrimers is in the range of 104–106°C. Prospects for further research are related to the study of the use of these dendrimers as effective platforms for catalysts, which opens up new opportunities in the field of chemical synthesis.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"520 4","pages":"150 - 159"},"PeriodicalIF":1.0,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}