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Композиционные минерал-полимерные материалы, содержащие катионзамещенные фосфаты кальция
Перспективные материалы. 2022. № 7. С. 35–48.
Гречишникова А. А., Слукин П. В., Трофимчук Е. С., Давыдова Г. А., Фадеева И. В.
Powders of copper, zinc, manganese-substituted tricalcium phosphates (TCP) were synthesized, the composition and structure of the obtained compounds were studied. It is shown how copper, zinc and manganese ions affect the phase composition and microstructure of powders substituted with TCP. Composite materials based on a blend of polyvinylpyrrolidone with alginate (PVP:ALG) containing copper, zinc, and manganese-substituted TCP have been obtained. The thermal stability and mechanical strength of composite films crosslinked with polyvalent metal ions have been studied. The least strong, but at the same time more thermally stable composites crosslinked with alkaline earth metal ions. The test for cytotoxicity of powders substituted TCP’ extracts and composites showed that the powders and composite materials with them are non-toxic and biocompatible. The study of the antibacterial activity of the materials against the Escherichia coli C600 strain showed that the growth of bacteria was inhibited by the samples containing copper-TCP and zinc-TCP. The composite with manganese-TCP showed no activity against Escherichia coli C600. Composites based on the PVP:ALG blend with copper, zinc-substituted TCP can be considered as materials with an antibacterial effect for use in medicine.
Language:
Russian
Das A., Saikia J., Maji N. et al., ChemNanoMat 2026 Vol. 12 No. 5 Article e202500733
Developing efficient photoactive materials from bio-derived resources is vital yet challenging for achieving effective water splitting performance. In this work, nano carbon dots (CDs) of zero-dimensional (0D) were synthesized from papaya peel through a simple and eco-friendly process and subsequently anchored onto the two-dimensional (2D) layered structure of graphitic carbon nitride (g-C3N4, GCN) at various ...
Added: June 2, 2026
Wary R. R., Mahato B., Sharma N. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 17 P. 5099–5107
Development of heterojunction materials is an efficient approach for enhancing photocatalytic and photoelectrochemical processes. We develop a ZnO/CuO heterojunction via Cu doping into a ZnO matrix. Structural characterization confirmed that Cu was effectively incorporated into ZnO without any structural changes. The improved optical properties and reduced charge carrier recombination of the doped samples were confirmed ...
Added: June 2, 2026
Duran E. ., Pulgar A., Izquierdo R. et al., Physica Status Solidi (A) Applications and Materials 2026 Vol. 223 No. 7 Article e202500942
Ceramic superconductors exhibit remarkable properties, including zero electrical resistance and potent magnetic behavior, operating at temperatures as high as the boiling points of liquid nitrogen (77 K) and liquid hydrogen (20 K). These characteristics position them as key enablers for sustainable technologies spanning electric propulsion, lossless energy transmission, advanced medical imaging, and quantum computation. This review presents ...
Added: June 1, 2026
Ostovari Moghaddam A., Mehrabi-Kalajahi S., Hossein Vasigh S. A. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 13 P. 3978–3985
Water electrolysis is a key technology for sustainable energy conversion and hydrogen generation. Recently, high-entropy oxides (HEOs) have emerged as promising materials because they allow tuning of structural, electronic, and catalytic properties in multifunctional systems. Here, we report the synthesis of a multicomponent La(FeCoCuTiNiMnMgSnZn)O3 perovskite, and its hybridization with reduced graphene oxide (rGO) to form a ...
Added: June 1, 2026
Novikov A., Communications in Computational Chemistry 2026 Vol. 8 No. 2 P. 203–210
Chalcogen bonds (ChBs) are often interpreted as 𝜎-hole driven electrostatic interactions between a chalcogen atom and a Lewis base, yet their covalent character remains under active discussion. Here, we present a real-space, reference-free study of prototypical X2Ch···X– complexes (X = F, Cl; Ch = O, S) using the Interacting Quantum Atoms (IQA) energy decomposition within ...
Added: May 27, 2026
Uskov F., Korobkov S., Birin K. P. et al., Journal of Photochemistry and Photobiology A: Chemistry 2026 Vol. 474 Article 116936
Oxidation of sulfides by singlet oxygen has been extensively studied, yet the structure-photoactivity relationship of these photosensitizers remains underinvestigated. In the present work the photocatalytic performance of a set of functionalized palladium(II) porphyrinates was comprehensively investigated in the photocatalytic oxidation of sulfides to reveal mutual influence of structural peculiarities onto the photosensitizing properties. The photophysical ...
Added: May 27, 2026
Mezentsev I., Dudarova N., Druzina A. et al., Journal of Photochemistry and Photobiology A: Chemistry 2026 Vol. 479 Article 117316
Novel cobalt bis(dicarbollide) based terminal alkynes with charge-compensated group in a spacer were synthesized by the nucleophilic ring-opening reactions of cyclic oxonium derivatives of cobalt bis(dicarbollide) with N,N-dimethylbut-3-yn-1-amine. A series of zwitterionic conjugates of cobalt bis(dicarbollide) with BODIPY were synthesized using the copper(I)-catalyzed azide-alkyne cycloaddition reaction. The absorption-emission spectra of the synthesized fluorescent conjugates of cobalt ...
Added: May 27, 2026
Toukach P., Smirnova N. S., Zdorovenko E. L. et al., Analytical Chemistry 2026 Vol. 98 No. 15 P. 10988–10996
Pyruvylation is one of the immunochemically relevant modifications of O-antigens in bacterial and fungal cells. Therefore, fast and relatively simple analytical methods for identifying this modification are highly demanded. 13C NMR spectroscopy is the best candidate for this purpose, but its successful application requires using reference structures and reliable databases. In this work, we collected ...
Added: May 25, 2026
Зверева О., Клюев Ф. С., Lebedeva N. et al., Organic Letters 2025 Vol. 27 No. 50 P. 13711–13716
Added: May 23, 2026
Mikhail A. Losev, Andrey S. Kozlov, Afanasyev O. et al., ACS Catalysis 2026 Vol. 16 No. 10 P. 9380–9386
A convenient, stable, and non-toxic substance, tetrabutylammonium difluorotriphenylsilicate (TBAT), can be used as an organocatalyst in all stages of polymer lifetime: synthesis, modification, and recycling. The fluorine-containing initiator showed high activity in the polymerization of siloxanes compared to classic organocatalytic systems. Using kinetically controlled ROP, a high-molecular-weight PDMS (Mn up to 820 𝑘𝑔/𝑚𝑜𝑙) was prepared at room ...
Added: May 22, 2026
Лосев М. А., Козлов А. С., Клюев Ф. С. et al., Organic and Biomolecular Chemistry 2023 Vol. 21 No. 42 P. 8477–8481
A simple and atom-efficient way to prepare amides directly from carboxylic acids and nitroarenes was developed. Carbon monoxide as a sole reducing agent provides the ultimate selectivity of the protocol. A straightforward and selective way for the preparation of amides from nitroarenes and carboxylic acids using carbon monoxide as a reductant was developed. This protocol ...
Added: May 22, 2026
Андреев Д. В., Корнев С. А., Bondarenko G. et al., Перспективные материалы 2026 № 6 С. 5–11
Выполнено сравнительное исследование процессов сильнополевой зарядовой
деградации подзатворного диэлектрика структур металл-диэлектрик-полупроводник (МДП)
с алюминиевым и поликремниевым затвором. Зарядовые явления в МДП-структурах
изучали методом сильнополевой инжекции электронов в диэлектрик в режиме возрастания
плотности стрессового инжекционного тока с кратковременными переключениями
в измерительный режим при постоянной низкой плотности инжекционного тока.
Использование данного метода позволило получить новые данные о процессах зарядовой
деградации подзатворного диэлектрика МДП-структур с ...
Added: May 21, 2026
Borovikova I., Uporov I., Okhrimenko G. et al., Journal of Structural Biology 2026 Vol. 218 No. 2 Article 108315
Single amino acid substitutions in the ATP-binding domain of ACVRL1, a key receptor in the bone morphogenetic protein (BMP) signaling pathway, are frequently classified as variants of uncertain significance (VUS), complicating molecular diagnosis for pulmonary arterial hypertension (PAH) and Hereditary Hemorrhagic Telangiectasia (HHT). Since aberrant ATP binding disrupts downstream SMAD1/5/8 phosphorylation, we employed molecular dynamics ...
Added: May 20, 2026
Thangavel B., Kathamuthu T., Srinivasan S., International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 2026 Vol. 36 No. 09 Article 2630019
In this paper, we report, for the first time, that Extreme Events (EEs) can robustly emerge in autonomous, weakly coupled Bonhoeffer–van der Pol oscillators, challenging the prevailing notion that strong interaction and external drive are necessary for such rare, large-amplitude bursts. Our central finding is a novel dynamical route to EEs: a transition from quasi-periodic torus dynamics to ...
Added: May 20, 2026
Malikov D., Krasnov L., Kiseleva M. et al., Scientific data 2026 Vol. 13 Article 727
Solubility is a crucial property of organic compounds, impacting their potential applications in synthetic chemistry, materials science and drug design. Moreover, in technological processes mixtures of solvents are often utilized, making the solubility assessment more complicated. Predicting solubility values in mixtures of solvents from a molecular structure can help to address this issue, although a ...
Added: May 19, 2026
Rathish S., Andrey S. Vasenko, Thazhathenair A. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 18 P. 5386–5394
We demonstrate and rationalize the effect of Au nanoparticles (NPs) on the hierarchical g-C3N4/CeO2 heterojunction. g-C3N4/CeO2 decorated with monodispersed plasmonic Au NPs was synthesized. Detailed analyses showed that CeO2 nanocubes and monodispersed Au NPs were evenly distributed over the 2D g-C3N4 surface, forming a robust interface enriched with abundant active sites. The structure enabled efficient separation of photogenerated charge ...
Added: May 16, 2026
Paul R., Das A., Sharma N. et al., Colloids and Surfaces A: Physicochemical and Engineering Aspects 2026 Vol. 728 Article 138830
Niobium-doped TiO2 (Nb-TiO2), demonstrates dual functionality as an efficient photocatalyst for dye degradation and a promising photoelectrocatalyst for water oxidation. Nb incorporation via a facile hydrothermal method was confirmed by XRD (Rietveld refinement), XPS, TEM, FT-IR, Raman, and BET analyses, indicating successful lattice doping and structural modification. Photocatalytic dye degradation experiments were conducted using a model ...
Added: May 16, 2026
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Kozlova T., Шейченко Е. Д., Kozlov D. et al., ACS Applied Bio Materials 2026 No. 9 P. 2914–2927
Recently, it has been recognized that crystalline ceric phosphates are promising candidates for use in sunscreen cosmetics, as inorganic UV filters. The present paper provides deeper insights into the UV-shielding properties, biocompability, radical-scavenging properties and redox activity of the crystalline double ammonium ceric phosphate (NH4)2Ce(PO4)2·H2O. A strong correlation was established between conditions of hydrothermal synthesis ...
Added: May 6, 2026
Besprozvannyh V., Ryndyk M., Nifantiev I. et al., International Journal of Molecular Sciences 2025 Vol. 26 No. 22 Article 11113
To reduce the time of postoperative recovery and to prevent post-surgical complications, biocompatible synthetic materials with osteoconductive and osteoinductive properties are used as bone substitutes in large bone defect management. A simplified biomimetic approach to similar materials is based on the use of an inorganic filler, a polymer matrix, and a compatibilizer, mimicking the composition ...
Added: March 1, 2026
Санина Н. А., Шилов Г. В., Ованесян Н. С. et al., Координационная химия 2023 Т. 49 № 9 С. 530–542
The synthesis and data on the physicochemical characteristics and biological activity of the new iron nitrosyl complex (Q+)2[Fe2(S2O3)2(NO)4]2– (I), where Q+ is protonated 2-ethyl-4-pyridinecarbothioamide (C8H11N2S), are presented. The structure and properties of the complex were studied by X-ray diffraction, elemental analysis, IR and Mössbauer spectroscopy, and amperometry. The complex showed antibacterial activity and efficiently inhibited ...
Added: September 14, 2025
Санина Н. А., Конюхова А. С., Корчагин Д. В. et al., Журнал неорганической химии 2023 Т. 68 № 9 С. 1165–1180
New neutral binuclear tetranitrosyl iron complexes of the composition [Fe2R2(NO)4] (R = 2,4-difluorothiophenyl(1) and 3,4-difluorothiophenyl(2)), donors of nitrogen oxide (NO), have been synthesized. The complexes were studied by Mossbauer, IR, and EPR spectroscopy, X-ray diffraction, and elemental analysis. The antibacterial activity and cytotoxicity in Vero cells of the complexes 1, 2 and the previously synthesized ...
Added: September 14, 2025
Козуб Г. И., Кондратьева Т. А., Шилов Г. В. et al., Известия Академии наук. Серия химическая 2023 Т. 72 № 3 С. 651–663
Three new binuclear tetranitrosyl iron complexes with m- and p-methoxybenzenethiolate and naphthalene-2-thiolate ligands have been synthesized. The crystals were characterized by X-ray diffraction, IR, Mossbauer spectroscopy, and elemental analysis. The NO-donating properties, cytotoxicity in tumor and non-cancerous cells, and antibacterial activity of the obtained complexes were studied. The toxicity of the complexes and the corresponding ...
Added: September 14, 2025
Forysenkova Anna A., Slukin P., Trofimchuk E. et al., Inorganic Materials: Applied Research 2023 Vol. 14 No. 2 P. 331–340
Powders of copper-, zinc-, manganese-substituted tricalcium phosphates (TCP) are synthesized; the composition and structure of the obtained compounds are studied. It is shown how copper, zinc, and manganese ions affect the phase composition and microstructure of substituted TCP powders. Composite materials based on a blend of polyvinylpyrrolidone with alginate (PVP:ALG) containing copper-, zinc-, and manganese-substituted ...
Added: August 13, 2025