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Thiophene-based water-soluble C70 fullerene derivatives as novel antioxidant agents
Biomaterials Translational. 2025. Vol. 6. No. 3. P. 359–370.
Margarita Chetyrkina, Umriukhin P., Ershova E., Proskurnina E., Sergeeva V., Savinova E., Kostyuk S., Kameneva L., Kraevaya O., Bolshakova V., Troshin P., Salimova T., Rodionov I., Kutsev S., Veiko N., Kostyuk S.
Fullerenes are one of the most popular nanomaterials, and C70 fullerene is the second most common fullerene after C60 buckminsterfullerene. Minor modification of fullerenes derivatives can change their biological effects and antioxidant properties. A plethora of water-soluble derivatives can be synthesised based on buckminsterfullerenes. In the present study, we synthesised three water-soluble C70 fullerene derivatives with thiophene-based solubilising addends and tested their cytotoxicity and the transcriptional activity of genes, which regulate an oxidative metabolism. Aliphatic chain length in the structure of the solubilising addend of the water-soluble fullerene derivative has been varied, and we revealed that a longer chain resulted in more pronounced antioxidant activity. Thus, the surface modification enhances the antioxidant properties of the compound and changes the nanoparticles impact on the genetic apparatus of the cell. Interestingly, even slight modifications of the functional addend’s structure can significantly affect the final cell response. The data obtained can be harnessed to develop novel and efficient medications for the management of ischaemia, stress-related conditions, the prevention of ageing, and the resolution of other practical healthcare challenges.
Voropaeva D., S. Novikova, I. Stenina et al., Solid State Ionics 2026 Vol. 445 Article 117288
Composite gel polymer electrolytes based on a perfluorinated sulfonic acid cation-exchange MF-4SC membrane
containing surface-sulfonated nanoparticles of aluminum oxide, cerium (IV) oxide, and titanium oxide (sAl2O3,
sCeO2, and sTiO2, respectively) were prepared by casting from a dispersion in N,N-dimethylformamide and
plasticized with a 1,3-dioxolane/1,2-dimethoxyethane mixture. The influence of the filler nature on ionic conductivity,
solvent uptake, activation energy, lithium ...
Added: July 30, 2026
Korogod D., Shapeev A., Ivan S. Novikov, Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 2 Article 024104
We present two models with explicit long-range electrostatics in the form of Coulomb interactions. Both models include point charges depending on their local atomic environments, and the second model also conserves a total charge of an atomic system. We combine the proposed long-range models with the local moment tensor potential (MTP) and demonstrate that they ...
Added: July 22, 2026
Moshkina E., Molokeev M., Zolotov A. et al., Journal of Alloys and Compounds 2026 Vol. 1077 Article 189412
A wide series of substitutions in a subsystem of small radii cations M = Al, Cr, Fe, Ga, Sc is possible in rare-earth borates ReM3(BO3)4 with the huntite structure. However, the existence of these compounds where M = Mn still raises doubts. The study presents a synthetic approach developed in the framework of the flux method allowing for the required ...
Added: June 29, 2026
Schneider M., Zaripov D., Dokin R. et al., Journal of Chemical Theory and Computation 2026 Vol. 22 No. 9 P. 4405–4414
Density functional theory (DFT) is the workhorse of modern reactions and materials modeling. While the exact functional remains unknown, many approximations to it have been constructed either by hand-crafting functional forms to satisfy exact constraints or by machine learning. In this work, we show how both of these approaches can be fused to build both ...
Added: June 26, 2026
Laurinavichyute V., Levin E. E., Mironkova A. A. et al., Surfaces and Interfaces 2026 Vol. 81 Article 108389
In this work we characterize mixed Mo-W acidic deposition solutions with Mo content ranging from 0 to 100 mol.% by Raman and UV–Vis spectroscopy. The obtained distribution diagram of mixed isopolyanions allows one to explain the observed change in film deposition rate with increase in Mo content. It was found that the initial decrease in ...
Added: June 24, 2026
Filippova A. V., Yurchenko N. Y., Smirnov S. A. et al., Journal of Alloys and Compounds 2026 No. 1074 Article 189162
This study investigates the effects of post-processing heat treatment at 300–500 °C on the microstructure, hardness, and tensile properties of laser powder bed fusion (PBF-LB) processed Al-bronze processed with energy densities (ED) in the range of 125–938 J/mm3. In the as-printed state, sharp needle-like α + β′ laths form at lower ED whereas with increasing ED, the β′ ...
Added: June 12, 2026
Obijiofor O., Novikov A., New Journal of Chemistry 2026 Vol. 50 No. 23 P. 9749–9768
Rational design of gold-based nanocarriers for neurotherapeutics requires atomic-scale understanding of drug-material interactions. Density functional theory calculations were performed to investigate levodopa (L-DOPA) adsorption on small gold clusters (Au2–Au4) with cationic, neutral, and anionic charges, with additional validation on a larger Au10 cluster using multiple low-energy isomers. Binding free energies (ΔGbind), charge transfer, and electronic descriptors ...
Added: June 3, 2026
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
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
Chowdhury U., Mondal S., Dey S. et al., Journal of the american chemical society 2026 Vol. 148 No. 23 P. 24538–24550
Covalent functionalization offers a versatile platform to engineer carbon nanotube properties for optoelectronics applications. We demonstrate by atomistic quantum dynamics simulation that covalent functionalization can renormalize the CNT band gap, split the degenerate CNT band edge states, and strongly influence charge carrier separation and recombination dynamics. Open-ring CNT functionalization (O-CNT) largely retains the π-conjugation, whereas ...
Added: June 1, 2026
Jiménez-Grávalos F., Alexander S. Novikov, Pendás Á. M., 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., Kliuev F., 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., Kliuev F. 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
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
Chernov K., Savin A., Otvodnikova D. et al., Oncology Research 2026 Vol. - No. -
The formation of drug resistance poses the ultimate threat in modern oncology. Targeted therapy lacks versatility, while conventional therapy is famous for its side effects. However, for the new therapeutics to address the challenge of drug resistance, such compounds should combine properties of both modalities. In this review, we argue that metal-based therapeutics are paramount ...
Added: April 15, 2026
Ероховец Н. Ю., Вестник Московского университета. Серия 1: Математика. Механика 2021 № 2 С. 61–72
The paper is a review of the results of the eponymous cycle of author's works marked by the I. I. Shuvalov I degree prize 2018 for scientific research and recent results. We study families of three-dimensional simple polytopes defined by the condition of cyclic k-edge-connectivity, in particular, flag polytopes and Pogorelov polytopes, as well as related families of ...
Added: November 26, 2025
Махаева Г. Ф., Ковалева Н. В., Рудакова Е. В. et al., Molecules 2024 Vol. 29 No. 2 Article 321
Effective therapeutics for Alzheimer’s disease (AD) are in great demand worldwide. In our previous work, we responded to this need by synthesizing novel drug candidates consisting of 4-amino-2,3-polymethylenequinolines conjugated with butylated hydroxytoluene via fixed-length alkylimine or alkylamine linkers (spacers) and studying their bioactivities pertaining to AD treatment. Here, we report significant extensions of these studies, ...
Added: September 14, 2025
Балакина А. А., Приходченко Т. Р., Якушев И. А. et al., Известия Академии наук. Серия химическая 2023 Т. 72 № 7 С. 1618–1632
The structure of 3-hydroxy-6-methyl-2-ethylpyridinium nitroxysuccinate (2), its cytotoxicity, and its ability to influence the content of intracellular nitrogen monoxide, as well as the formation of reactive oxygen species and lipid peroxidation processes under conditions of induced oxidative stress were studied. It was demonstrated that compound 2 had low cytotoxicity in vitro in both non-cancerous and ...
Added: September 14, 2025
Z. Shakiryanova, Khegay R., Gayibov U. et al., Agronomy Research 2023 Vol. 21 No. 3 P. 1293–1303
Grape pomace is a natural product rich in dietary fibers, polyphenols and anthocyanidins. By their chemical composition, secondary products from grape processing are valuable raw materials for obtaining a variety of new products. Recently, in food biotechnology, fermented and unfermented grape pomace have undergone a deeper study of the role of additives in dry powders ...
Added: December 22, 2024