Article
Chemistry, Physical
V. A. Elterman, P. Yu. Shevelin, L. A. Yolshina, A. V. Borozdin
Summary: The density, viscosity, and specific conductivity of AlCl3-[EMIm]Cl and AlCl3-[BMIm]Cl ILs were measured, and the molar concentrations of ions were calculated. The study confirmed the additivity of densities and molar volumes and identified the main factors affecting specific conductivity in acidic ILs.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Environmental Sciences
Hassan Karimi-Maleh, Sara Ranjbari, Bahareh Tanhaei, Ali Ayati, Yasin Orooji, Marzieh Alizadeh, Fatemeh Karimi, Sadegh Salmanpour, Jalal Rouhi, Mika Sillanpaa, Fatih Sen
Summary: The study revealed that BmImBr impregnated chitosan beads showed efficient removal of methylene blue, reaching 86% removal efficiency in just 25 minutes. Increasing the amount of BmImBr improved the adsorption performance of the prepared beads.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Physical
Yoshihiro Koyama, Seiya Shimono, Hiroaki Kishimura, Takahiro Takekiyo, Yukihiro Yoshimura, Hiroshi Abe, Kiyoto Matsuishi
Summary: The high-pressure crystal polymorph of a fluorinated ionic liquid was determined through X-ray diffraction and Raman spectroscopy, revealing irreversible changes in crystal structure upon compression and decompression. Conformational variance/invariance of the ions in the Raman spectra corresponded to the high-pressure crystal polymorph, indicating a switch in conformational variance at a specific pressure point leading to a change in crystal system. The high-pressure crystal polymorph was shown to be entirely different from the low-temperature crystal polymorph.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Polymer Science
Yuhui Xie, Xue Lv, Xinyi Sui, Song Tian, Li'an Jiang, Shulin Sun
Summary: Physicochemical double cross-linking nanocomposite hydrogels were prepared in this study. The addition of ionic liquid prevented Laponite from forming a high thixotropic gel in water. The dispersed Laponite nanosheets acted as dynamic physical crosslinking sites and formed a strong and tough hydrogel network structure when combined with the chemical crosslinking center of MBA in the polymer chain segments. The PAM/Laponite/IL nanocomposite hydrogel showed excellent tensile strength, high tensile strain, and remarkable toughness, making it a potential load-bearing material.
Article
Chemistry, Physical
V. A. Elterman, P. Yu Shevelin, L. A. Yolshina, E. G. Vovkotrub, A. Borozdin
Summary: The transport numbers of [BMIm](+) cation in the ionic liquid are independent of the mole fraction of aluminium chloride, with internal and external transport numbers being 0.70 +/- 0.01 and 1.02 +/- 0.04, respectively. The mobility of AlCl4- and Cl- in the ionic liquid was found to be similar, and the cation size did not affect the transport numbers in the chloroaluminate ionic liquids.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Analytical
Pinar Esra Erden, Ceren Kacar Selvi, Esma Kilic
Summary: A novel amperometric tyramine biosensor was fabricated by immobilizing tyrosinase on a glassy carbon electrode modified with a composite film of carbon nanofibers, chitosan, ionic liquid, and gold nanoparticles. The sensor showed high sensitivity and selectivity for tyramine detection, with a linear working range, sensitivity, and detection limit under optimal conditions. This biosensor also demonstrated good selectivity and applicability for detecting tyramine levels in soy sauce samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Thermodynamics
F. F. Zhang, X. Y. Li, G. Chen, T. Wang, T. X. Jin, C. X. Cheng, G. P. Li, L. G. Zhang, B. Zhang, F. F. Zheng
Summary: This study investigated the thermophysical properties and water sorption characteristics of the [EMIm]Ac ionic liquid and water binary systems, developing mathematical relationships between the measured properties and the variables. Modified two-step sorption mechanism and linear desorption kinetics were proposed for absorption and desorption processes, aiding in the evaluation of their performance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Environmental
Qi Lu, Dandan He, Xuran Liu, Mingting Du, Qing Xu, Dongbo Wang
Summary: In this study, the effects of BmimCl on glucose anaerobic digestion were investigated, and it was found that BmimCl inhibited methane production and the biotransformation of butyrate, hydrogen, and acetate. The toxicological mechanism showed that BmimCl destroyed the conformational structure of extracellular polymeric substances, leading to microbial cell inactivation. Molecular ecological network analysis revealed the reduced stability of the microbial community in the presence of BmimCl.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Lucia Allebrandt da Silva Ries, Henrique Alves de Brito, Fabiano Perin Gasparin, Iduvirges Lourdes Muller
Summary: This study utilized the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate as an efficient and environmentally-friendly electrolyte for the electrodeposition of nanocrystalline cobalt films on a silicon substrate. The electrodeposition of cobalt was found to occur by three-dimensional instantaneous nucleation with diffusion-controlled growth, resulting in high-quality and pure metallic cobalt deposits. Elevated current efficiencies were achieved, indicating the great potential of the ionic liquid for cobalt electrodeposition on silicon substrates.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Agricultural Engineering
Xiaocong Liang, Junyu Wang, Hantao Liu
Summary: Quantitative recovery of acidic ionic liquids (AILs) was achieved through ultrafiltration and bipolar membrane electrodialysis (BMED), providing a sustainable biomass processing methodology using AILs.
BIORESOURCE TECHNOLOGY
(2021)
Article
Thermodynamics
D. A. Kalinyuk, A. I. Druzhinina, L. A. Tiflova, O. V. Dorofeeva, Y. V. Golubev, D. Yu Iliyn, K. D. Semavin, N. S. Chilingarov
Summary: A comprehensive thermodynamic study was conducted on two ionic liquids, EmimCl and BmimCl, using experimental and calculation methods. Various thermodynamic functions, such as standard entropy, heat content, and Gibbs energy, were calculated for both crystalline and liquid phases of EmimCl and BmimCl. Melting parameters and standard enthalpies of dissolution were measured, and standard enthalpies, entropies, and Gibbs energies of formation were calculated. The obtained thermodynamic characteristics were analyzed and compared with literature data.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2023)
Article
Thermodynamics
Andong Yu, Xinmiao Liang, Min Hua, Lu Qian, Xuhai Pan, Yiming Jang, Sanming Wang, Juncheng Jiang
Summary: Nitrocellulose, a versatile and thermosensitive material, has caused numerous fire and explosion accidents due to its thermal instability during production, transport, storage, and use. Humectants are commonly used to improve the safety of nitrocellulose. This study evaluated the thermal stability of the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]) and its ability to serve as a humectant for nitrocellulose. Results showed that [Bmim][PF6] exhibited high thermal stability, inhibited the decomposition of nitrocellulose, and absorbed nitrogen dioxide, thereby improving the safety of nitrocellulose.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Rui-Jie Xu, Shang-Hao Liu, Ke-Fan Wu, Chang-Fei Yu
Summary: Coal spontaneous combustion endangers the safety of the coal industry and results in the emission of a large amount of carbon dioxide, which poses a threat to the ecological environment. This study demonstrates that ionic liquid can be used as a flame retardant to inhibit the spontaneous combustion of coal.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
Aycan Altun, Osman Nuri Sara
Summary: In this study, the densities and viscosities of binary mixtures of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide, [bmim][NTf2], and ethylene glycol (EG) were experimentally measured. A first-order polynomial and Vogel-FulcherTammann equation were used to estimate the densities and viscosities of the mixtures, respectively. The excess molar volume, viscosity, and Gibbs energy of activation for viscous flow were calculated and fitted to the Redlich-Kister equation. The thermal expansion coefficients and partial and apparent molar volumes of [bmim][NTf2] and EG in their binary mixtures were also investigated.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Chao Wang, Junwei He, Liming Zou, Huajun Wang, Yanli Wang, Yan Vivian Li
Summary: PVA/IL composites were prepared using an ionic liquid (IL) and poly(vinylalcohol) (PVA). The plasticizing effect of IL on PVA was investigated using various analytical techniques. The results showed that IL could form hydrogen bonds with PVA, leading to changes in absorption peaks and thermal properties. The addition of IL improved the thermal stability and broadened the thermal processing window of the PVA/IL composites. However, the melt processability of the composites was not significantly improved.
POLYMER INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
V. V. Korolev, M. S. Gruzdev, A. G. Ramazanova, O. V. Balmasova, U. V. Chervonova
Summary: In this study, the dendritic iron (III) complex of the third generation was synthesized and characterized using various experimental techniques, showing a columnar mesophase and magnetic phase transition. The compound's liquid crystalline phase and spin crossover in the same temperature region suggest potential applications in high-tech industries.
Article
Chemistry, Applied
Matvey S. Gruzdev, Ulyana Chervonova, Alexander A. Ksenofontov, Mikhail A. Krestianinov, Anatoly Alexandrov, Tamara Pashkova
Summary: Four new mononuclear complexes were synthesized using asymmetric azomethine ligand with Fe (III), Ga (III), Cu (II), and Co (II) ions as central metal ions. The X-ray powder analysis revealed triclinic crystal cells with high stability above 200 degrees C. UV-Vis and fluorescence spectral data showed unique characteristics of the complexes in various solvents.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Polymer Science
Yuliya A. Fadeeva, Liudmila E. Shmukler, Matvey S. Gruzdev, Liubov P. Safonova
Summary: In this study, we investigated the thermal behavior, ion transport properties, and electrochemical stability of polymerized imidazolium-based protic ionic liquids (poly(ILs)) as potential materials for electrochemical devices. The phase behavior of both poly(ILs) and the corresponding IL monomers (MILS) was studied with differential scanning calorimetry and thermogravimetric analysis, and the temperature dependences of the conductivity and electrochemical window of all the MILS and poly(ILs) were discussed.
POLYMER INTERNATIONAL
(2021)
Article
Chemistry, Physical
Liudmila E. Shmukler, Irina Fedorova, Yuliya A. Fadeeva, Matvey S. Gruzdev, Liubov P. Safonova
Summary: This study focuses on the investigation of a series of protic ionic liquids (PILs) with imidazolium and alkylimidazolium cations and analyzes the effects of anion nature and alkyl radical length in the cation structure on thermal and transport properties. The results show that the higher thermodynamic stability of an ion pair increases the PIL decomposition temperature. The melting points of salts decrease as the alkyl radical length in the cation becomes longer, indicating weaker ion-ion interaction in the ion pairs. A comparative analysis between protic ILs and corresponding ILs with the same radical in the cation structure and the same anion has been performed, suggesting that lower melting points of ILs with 1R3MeIm cations result from the weakening of both the ion-ion interaction and the hydrogen bond.
Article
Materials Science, Multidisciplinary
M. S. Gruzdev, U. Chervonova, A. A. Ksenofontov, N. G. Bichan, A. M. Kolker
Summary: This study investigates the synthetic approach, structural characterization, and optical properties of carbazole derivatives with different functional groups, demonstrating their potential as building blocks for organic molecules. Experimental and computational studies show that the compounds are non-planar and exhibit intense fluorescence in solution with varying quantum yields, as well as solid-state fluorescence in different colors.
Article
Crystallography
A. Alexandrov, T. Pashkova, M. S. Gruzdev
Summary: A liquid crystal poly(propylene imine) dendrimer of second generation (D2) was studied using X-ray diffraction and Hosemann's paracrystal model, revealing a unique fan-shaped conformation, two liquid crystal phases, and an inability to be oriented by external magnetic or electric fields. Phase transitions and structural parameters were analyzed, showing characteristics of a mixed-order phase transition and two-phase behavior near the phase transition and vitrifying region.
LIQUID CRYSTALS AND THEIR APPLICATION
(2021)
Article
Chemistry, Applied
Valerya Vorobeva, Denis Starichenko, Matvey Gruzdev, Ulyana Chervonova, Ruslan Zaripov, Aleksander Korolev
Summary: The magnetic features of mononuclear iron (III) complexes with tridentate Schiff base ligands were studied using different techniques. The results showed that these complexes have different spin centers and exhibit different magnetic behaviors at different temperatures. Additionally, antiferromagnetic exchange interactions between neighboring Fe (III) ions in the complexes were detected.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Applied
N. G. Bichan, E. N. Ovchenkova, A. A. Ksenofontov, V. A. Mozgova, M. S. Gruzdev, U. V. Chervonova, I. V. Shelaev, T. N. Lomova
Summary: In this study, two porphyrins bearing specific functional groups were synthesized and studied using experimental and theoretical methods. By utilizing machine learning methods to predict the absorption wavelength of porphyrins, more accurate results were obtained compared to density functional theory (DFT).
Article
Multidisciplinary Sciences
Matvey Gruzdev, Ulyana Chervonova, Valerya Vorobeva
Summary: The Fe(III) complexes of branched asymmetric dendrimers were synthesized in a one-step reaction, showing mesomorphic behavior. EPR methods were used to investigate the existence and temperature dependence of high-spin (HS) and low-spin (LS) fractions of Fe(III) ions. It was found that the compounds contain one LS center and two HS centers, forming two magnetic sub-lattices. The formation and properties of floating layers of Fe(III) complexes and Langmuir-Blodgett films were also studied in the presence of a magnetic field.
Article
Chemistry, Physical
Irina V. Fedorova, Liudmila E. Shmukler, Yuliya A. Fadeeva, Matvey S. Gruzdev, Liubov P. Safonova
Summary: A quantum chemical analysis is conducted to study the structure and energy characteristics of ion pairs in protic ionic liquids (PILs) - tripropylammonium bis(trifluoromethanesulfonyl)imide (TPrA/TFSI) and tripropylammonium hydrogen sulfate (TPrA/HSO4). The active centers of cation-anion interaction are identified, and different configurations of ion pairs are modeled and studied. The influence of PIL structure on properties such as thermal stability, phase behavior, electrical conductivity, and dynamic viscosity is analyzed based on experimental data.
Article
Chemistry, Physical
Matvey Gruzdev, Anna Ramazanova, Viktor Korolev, Ulyana Chervonova
Summary: Two macromolecular complexes derived from poly(propylene imine) with Co(II) and Ni(II) ions have been synthesized by direct complexation between metal salts and the second generation dendrimers. The Co2+ complex is assumed to form a binuclear complex, while the Ni2+ complex fills all possible coordination sites. The symmetric Co(II) and Ni(II) complexes exhibit magnetocaloric behavior and show a change in the sign of the specific heat (QMCE) when exposed to a magnetic field. The complexes also exhibit a second-order phase transition with a maximum value in the temperature dependence of the heat capacity, and show enantiotropic mesomorphism with the formation of columnar phases.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Inorganic & Nuclear
N. G. Bichan, V. A. Mozgova, E. N. Ovchenkova, M. S. Gruzdev, T. N. Lomova
Summary: A new dendrimeric cobalt(II) complex CoP was synthesized and characterized, along with the discovery and investigation of the fluorescence quenching effect of PyC60 in the complex. The study provides valuable insights into the static mechanism of the quenching process and has implications for optimizing the structures of donor-acceptor systems in optoelectronics.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
M. G. Nikitina, M. S. Gruzdev, D. F. Pyreu
Summary: The formation of different compositions of mixed-ligand complexes in the Zn-L-histidine-L-ornithine system has been studied using pH-metry, calorimetry, and NMR spectroscopy. Thermodynamic parameters have been calculated and compared to propose the most probable method for the coordination of amino acid residues in mixed complexes.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
M. A. Agafonov, E. V. Alexandrov, N. A. Artyukhova, G. E. Bekmukhamedov, V. A. Blatov, V. V. Butova, Y. M. Gayfulin, A. A. Garibyan, Z. N. Gafurov, Yu. G. Gorbunova, L. G. Gordeeva, M. S. Gruzdev, A. N. Gusev, G. L. Denisov, D. N. Dybtsev, Yu. Yu. Enakieva, A. A. Kagilev, A. O. Kantyukov, M. A. Kiskin, K. A. Kovalenko, A. M. Kolker, D. Kolokolov, Y. M. Litvinova, A. A. Lysova, N. V. Maksimchuk, Y. V. Mironov, Yu. V. Nelyubina, V. V. Novikov, V. I. Ovcharenko, A. V. Piskunov, D. M. Polyukhov, V. A. Polyakov, V. G. Ponomareva, A. S. Poryvaev, G. V. Romanenko, A. V. Soldatov, M. V. Solovyeva, A. G. Stepanov, I. V. Terekhova, O. Yu. Trofimova, V. P. Fedin, M. V. Fedin, O. A. Kholdeeva, A. Yu. Tsivadze, U. Chervonova, A. I. Cherevko, V. F. Shul'gin, E. S. Shutova, D. G. Yakhvarov
Summary: This review summarizes the current research fields of metal-organic frameworks (MOFs) developed by Russian scientific institutions and universities in the last 5-10 years, including design, synthesis, topological description, and prediction of MOF properties, development of chemical engineering and modification methods, investigation using modern physicochemical techniques, and creation of functional materials based on porous frameworks.
JOURNAL OF STRUCTURAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Artem O. Surov, Alexander P. Voronin, Ksenia V. Drozd, Matvey S. Gruzdev, German L. Perlovich, Jupally Prashanth, Sridhar Balasubramanian
Summary: Different techniques, including cocrystallization and lyophilization, were found to be effective in obtaining alternative polymorphic forms of the nonsteroidal antiandrogenic drug nilutamide. Form I was confirmed as the most stable solid phase thermodynamically. Various DFT-D and semi-empirical schemes were compared for lattice energy calculation and polymorph energy ranking, with the PIXEL and PBEh-3c/def2-mSVP methods predicting the correct stability order of Forms I and II.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
