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State-of-the-Art Materials Science in Russia—2nd Edition
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State-of-the-Art Materials Science in Russia—2nd Edition

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 7813

Special Issue Editor

Dr. Pavel A. Abramov

E-Mail Website
Guest Editor
Nikolaev Institute of Inorganic Chemistry SB RAS, Lavrentiev St. 3, 630090 Novosibirsk, Russia
Interests: noble metals chalcogenide clusters; polyoxometalates; inorganic materials; crystallography
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue of the International Journal of Molecular Sciences (IJMS) aims to rapidly publish contributions on the synthesis, properties characterization, and application of all aspects of materials, with a focus on biological or molecular research. Topics include, but are not limited to, the following:

  • Biomaterials.
  • Nanomaterials.
  • Structural materials.
  • Functional/sensor materials.
  • Advanced/nuclear materials.
  • Polymers/composites.
  • Self-assembly/macromolecular materials.
  • Optoelectronic/magnetic materials.
  • Soft materials.
  • Biological materials.
  • Noncovalent interactions.

Dr. Pavel A. Abramov
Guest Editor

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

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Published Papers (7 papers)

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Research

17 pages, 5695 KiB  
Article
Methods of Formation of Protective Inhibited Polymer Films on Tungsten
by Natalia A. Shapagina, Alexey V. Shapagin, Vladimir V. Dushik, Andrey A. Shaporenkov, Uliana V. Nikulova, Valentina Yu. Stepanenko, Vladimir V. Matveev, Alexey L. Klyuev and Boris A. Loginov
Int. J. Mol. Sci. 2023, 24(19), 14412; https://doi.org/10.3390/ijms241914412 - 22 Sep 2023
Viewed by 794
Abstract
A comparative study of anticorrosive inhibited polymer films on the tungsten surface formed from an aqueous solution of inhibited formulations (INFOR) containing organosilane and corrosion inhibitors was carried out by means of the prolonged exposure of a tungsten product in a modifying solution [...] Read more.
A comparative study of anticorrosive inhibited polymer films on the tungsten surface formed from an aqueous solution of inhibited formulations (INFOR) containing organosilane and corrosion inhibitors was carried out by means of the prolonged exposure of a tungsten product in a modifying solution and by the method of cataphoretic deposition (CPD). Depending on the method of forming films on tungsten, the molecular organization of the near-surface layers was studied (ATR-FTIR), and the subprimary structure of the films was explored (TEM). The optimal modes of cataphoresis deposition (CPD duration and current density applied to the sample) for the formation of a protective inhibited polymer film on the tungsten surface were established by means of SEM. The energy and thermochemical characteristics (sessile drop and DSC methods), as well as operational (adhesive behavior) and protective filming ability (EIS and corrosion behavior), according to the method of formation of inhibited polymer film, were determined. Based on the combined characteristics of the films obtained by the two methods and the deposition modes, the CPD method showed better performance than the electroless dipping method. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science in Russia—2nd Edition)
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14 pages, 4995 KiB  
Article
New Functional Alkoxysilanes and Silatranes: Synthesis, Structure, Properties, and Possible Applications
by Sergey N. Adamovich, Arailym M. Nalibayeva, Yerlan N. Abdikalykov, Igor A. Ushakov, Elizaveta N. Oborina and Igor B. Rozentsveig
Int. J. Mol. Sci. 2023, 24(18), 13818; https://doi.org/10.3390/ijms241813818 - 07 Sep 2023
Viewed by 930
Abstract
The aza-Michael reaction of 3-aminopropyltriethoxysilane (1) and -silatrane (2) with acrylates affords functionalized silyl-(3–8) and silatranyl-(9–14) mono- and diadducts with up to a 99% yield. Their structure has been proved with [...] Read more.
The aza-Michael reaction of 3-aminopropyltriethoxysilane (1) and -silatrane (2) with acrylates affords functionalized silyl-(3–8) and silatranyl-(9–14) mono- and diadducts with up to a 99% yield. Their structure has been proved with IR and NMR spectroscopies, mass spectrometry and XRD analysis. The hydrolytic homo-condensation of triethoxysilanes 3–5 gives siloxanes 3a–5a, which form complexes with Ag, Cu, and Ni salts. They are also able to adsorb these metals from solutions. The hetero-condensation reaction of silanes 4–8 with OH groups of zeolite (Z), silica gel (S) and glass (G) delivers the modified materials (Z4, S7, G4, G5, G7, G8, etc.), which can adsorb ions of noble metal (Au, Rh, Pd: G4 + Au, G5 + Pd, G7 + Rh). Thus, the synthesized Si-organic polymers and materials turned out to be promising sorbents (enterosorbents) of noble, heavy, toxic metal ions and can be applied in industry, environment, and medicine. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science in Russia—2nd Edition)
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13 pages, 3612 KiB  
Article
New Ruthenium Nitrosyl Complexes Combining Potentially Photoactive Nitrosyl Group with the Magnetic Nitroxide Radicals as Ligands
by Gennadiy A. Kostin, Ruslan Kozlov, Artem Bogomyakov, Svyatoslav Tolstikov, Dmitriy Sheven and Sergey Korenev
Int. J. Mol. Sci. 2023, 24(17), 13371; https://doi.org/10.3390/ijms241713371 - 29 Aug 2023
Viewed by 716
Abstract
Two ruthenium nitrosyl complexes of Na[RuNOCl4L] with nitronyl nitroxide radicals coordinated to ruthenium with N-donor pyridine rings were prepared and described. The crystal structure of both complexes is 1D or 2D polymeric, due to the additional coordination of sodium cation by [...] Read more.
Two ruthenium nitrosyl complexes of Na[RuNOCl4L] with nitronyl nitroxide radicals coordinated to ruthenium with N-donor pyridine rings were prepared and described. The crystal structure of both complexes is 1D or 2D polymeric, due to the additional coordination of sodium cation by bridging the chloride ligands or oxygen atoms of nitroxides. Partially, the oligomeric forms remain in the solutions of the complexes in acetonitrile. The magnetic measurements in the solid state demonstrate the presence of antiferromagnetic interactions through the exchange channels, with the distance between paramagnetic centers equal to 3.1–3.9 Å. The electrochemical behavior of the prepared complexes was investigated in acetonitrile solutions. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science in Russia—2nd Edition)
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15 pages, 5116 KiB  
Article
Determination of Kinetic Parameters and Identification of the Rate-Determining Steps in the Oxygen Exchange Process for LaNi0.6Fe0.4O3−δ
by Natalia Porotnikova, Dmitriy Zakharov, Anna Khodimchuk, Edhem Kurumchin and Denis Osinkin
Int. J. Mol. Sci. 2023, 24(16), 13013; https://doi.org/10.3390/ijms241613013 - 21 Aug 2023
Cited by 2 | Viewed by 808
Abstract
The mixed ionic and electronic oxide LaNi0.6Fe0.4O3−δ (LNF) is a promising ceramic cathode material for solid oxide fuel cells. Since the reaction rate of oxygen interaction with the cathode material is extremely important, the present work considers [...] Read more.
The mixed ionic and electronic oxide LaNi0.6Fe0.4O3−δ (LNF) is a promising ceramic cathode material for solid oxide fuel cells. Since the reaction rate of oxygen interaction with the cathode material is extremely important, the present work considers the oxygen exchange mechanism between O2 and LNF oxide. The kinetic dependence of the oxygen/oxide interaction has been determined by two isotopic methods using 18O-labelled oxygen. The application of the isotope exchange with the gas phase equilibrium (IE-GPE) and the pulsed isotope exchange (PIE) has provided information over a wide range of temperatures (350–800 °C) and oxygen pressures (10–200 mbar), as each method has different applicability limits. Applying mathematical models to treat the kinetic relationships, the oxygen exchange rate (rH, atom × cm−2 × s−1) and the diffusion coefficient (D, cm2/s) were calculated. The values of rH and D depend on both temperature and oxygen pressure. The activation energy of the surface exchange rate is 0.73 ± 0.05 eV for the PIE method at 200 mbar, and 0.48 ± 0.02 eV for the IE-GPE method at 10–20 mbar; for the diffusion coefficient, the activation energy equals 0.62 ± 0.01 eV at 10–20 mbar for the IE-GPE method. Differences in the mechanism of oxygen exchange and diffusion on dense and powder samples are observed due to the different microstructure and surface morphology of the samples. The influence of oxygen pressure on the ratio of contributions of different exchange types to the total oxygen exchange rate is demonstrated. For the first time, the rate-determining step in the oxygen exchange process for LNF material has been identified. This paper discusses the reasons for the difference in the mechanisms of oxygen exchange and diffusion. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science in Russia—2nd Edition)
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16 pages, 3940 KiB  
Article
Crystal Structure and Thermal Properties of Double-Complex Salts [M1(NH3)6][M2(C2O4)3] (M1, M2 = Co, Rh) and K3[Rh(NH3)6][Rh(C2O4)3]2∙6H2O
by Pavel Smirnov, Evgeny Filatov, Natalia Kuratieva, Pavel Plyusnin and Sergey Korenev
Int. J. Mol. Sci. 2023, 24(15), 12279; https://doi.org/10.3390/ijms241512279 - 31 Jul 2023
Cited by 1 | Viewed by 811
Abstract
Here, seven new double-complex salts, [M1(NH3)6][M2(C2O4)3] (M1, M2 = Co, Rh) and K3[Rh(NH3)6][Rh(C2O4)3]2 [...] Read more.
Here, seven new double-complex salts, [M1(NH3)6][M2(C2O4)3] (M1, M2 = Co, Rh) and K3[Rh(NH3)6][Rh(C2O4)3]2∙6H2O types, are synthesised. The crystal structure and composition of DCS (double-complex salts) are studied by SCXRD, XRD, CHN and IR methods. The complex salts of the [M1(NH3)6][M2(C2O4)3] (M1, M2 = Co, Rh) type can be crystallised both as a crystalline hydrate [M1(NH3)6][M2(C2O4)3]·3H2O (sp. gr. P-3) and as an anhydrous complex (sp. gr. P-1) depending on the synthesis conditions. The process of [Rh(NH3)6][Rh(C2O4)3] formation is significantly dependent on the synthesis temperature. At room temperature, a mixture is formed comprising [Rh(NH3)6][Rh(C2O4)3] and K3[Rh(NH3)6][Rh(C2O4)3]2∙6H2O, while the [Rh(NH3)6][Rh(C2O4)3] target product crystallises at elevated temperatures. The thermal behaviour of double-complex salts is studied by the STA, EGA-MS, IR and XRD methods. The complete decomposition of complex salts in helium and hydrogen atmospheres resulting in metals or CoxRh1−x solid solutions is achieved at temperatures of 320–450 °C. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science in Russia—2nd Edition)
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18 pages, 4509 KiB  
Article
NMR-Relaxometric Investigation of Mn(II)-Doped Polyoxometalates in Aqueous Solutions
by Vladimir S. Korenev, Evgenia A. Burilova, Victoria V. Volchek, Enrico Benassi, Rustem R. Amirov, Maxim N. Sokolov and Pavel A. Abramov
Int. J. Mol. Sci. 2023, 24(8), 7308; https://doi.org/10.3390/ijms24087308 - 15 Apr 2023
Viewed by 1263
Abstract
Solution behavior of K;5[(Mn(H2O))PW11O39]·7H2O (1), Na3.66(NH4)4.74H3.1[(MnII(H2O))2.75(WO(H2O))0.25(α-B-SbW9O33)2]·27H2 [...] Read more.
Solution behavior of K;5[(Mn(H2O))PW11O39]·7H2O (1), Na3.66(NH4)4.74H3.1[(MnII(H2O))2.75(WO(H2O))0.25(α-B-SbW9O33)2]·27H2O (2), and Na4.6H3.4[(MnII(H2O)3)2(WO2)2(β-B-TeW9O33)2]·19H2O (3) was studied with NMR-relaxometry and HPLC-ICP-AES (High Performance Liquid Chromatography coupled with Inductively Coupled Plasma Atomic Emission Spectroscopy). According to the data, the [(Mn(H2O))PW11O39]5− Keggin-type anion is the most stable in water among the tested complexes, even in the presence of ethylenediaminetetraacetic acid (EDTA) or diethylenetriaminepentaacetic acid (DTPA). Aqueous solutions of 2 and 3 anions are less stable and contain other species resulting from dissociation of Mn2+. Quantum chemical calculations show the change in Mn2+ electronic state between [Mn(H2O)6]2+ and [(Mn(H2O))PW11O39]5−. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science in Russia—2nd Edition)
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15 pages, 3122 KiB  
Article
Electrochemical Behavior of Reduced Graphene Oxide Supported Germanium Oxide, Germanium Nitride, and Germanium Phosphide as Lithium-Ion Battery Anodes Obtained from Highly Soluble Germanium Oxide
by Alexey A. Mikhaylov, Alexander G. Medvedev, Dmitry A. Grishanov, Timur M. Fazliev, Vasilii Chernyshev, Elena A. Mel’nik, Tatiana A. Tripol’skaya, Ovadia Lev and Petr V. Prikhodchenko
Int. J. Mol. Sci. 2023, 24(7), 6860; https://doi.org/10.3390/ijms24076860 - 06 Apr 2023
Cited by 4 | Viewed by 2050
Abstract
Germanium and germanium-based compounds are widely used in microelectronics, optics, solar cells, and sensors. Recently, germanium and its oxides, nitrides, and phosphides have been studied as active electrode materials in lithium- and sodium-ion battery anodes. Herein, the newly introduced highly soluble germanium oxide [...] Read more.
Germanium and germanium-based compounds are widely used in microelectronics, optics, solar cells, and sensors. Recently, germanium and its oxides, nitrides, and phosphides have been studied as active electrode materials in lithium- and sodium-ion battery anodes. Herein, the newly introduced highly soluble germanium oxide (HSGO) was used as a versatile precursor for germanium-based functional materials. In the first stage, a germanium-dioxide-reduced graphene oxide (rGO) composite was obtained by complete precipitation of GeO2 nanoparticles on the GO from an aqueous solution of HSGO and subsequent thermal treatment in argon at low temperature. The composition of the composite, GeO2-rGO (20 to 80 wt.% of crystalline phase), was able to be accurately determined by the HSGO to GO ratio in the initial solution since complete deposition and precipitation were achieved. The chemical activity of germanium dioxide nanoparticles deposited on reduced graphene oxide was shown by conversion to rGO-supported germanium nitride and phosphide phases. The GeP-rGO and Ge3N4-rGO composites with different morphologies were prepared in this study for the first time. As a test case, composite materials with different loadings of GeO2, GeP, and Ge3N4 were evaluated as lithium-ion battery anodes. Reversible conversion–alloying was demonstrated in all cases, and for the low-germanium loading range (20 wt.%), almost theoretical charge capacity based on the germanium content was attained at 100 mA g−1 (i.e., 2595 vs. 2465 mAh g−1 for Ge3N4 and 1790 vs. 1850 mAh g−1 for GeP). The germanium oxide was less efficiently exploited due to its lower conversion reversibility. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science in Russia—2nd Edition)
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