Article
Chemistry, Multidisciplinary
Yuval Simha, Gil Daniels, Amalya Goldman, Elihay Kuniavsky, Dmitry Tsvelikhovsky
Summary: A new strategy for direct access to fully substituted polycyclic imidazolium salts using alpha-enaminones and proline as the reagents is reported. This open-flask operation is a catalyst-, metal-, and Lewis acid-free green process, which does not require an ion-exchange step. It can produce good yields with minimal formation of side products, and is not limited to aryl substituents.
Article
Chemistry, Physical
Jaemin Kim, Jewon Choi, Kiho Park, Sungchan Kim, Kwan Woo Nam, Kookheon Char, Jang Wook Choi
Summary: Increasing the silicon content in the silicon-graphite composite anode to maximize the energy density of a lithium-ion battery cell is a challenging task due to the contradictory surface characteristics of silicon and graphite. This study presents an amphiphilic host-guest complex binder composed of pyrene-conjugated poly(acrylic acid) and a hyperbranched gamma-cyclodextrin polymer, which effectively maintains the integrity of the electrode and improves the cycling performance and rate capability of Si-Gr electrodes.
ADVANCED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Lurong Ge, Yaohui Feng, Yanjun Dai, Ruzhu Wang, Tianshu Ge
Summary: This study develops a composite sorbent with excellent water sorption performance and long-term stability by encapsulating an ionic liquid in ordered mesoporous MCM-41. The composite sorbent exhibits fast sorption rate, low temperature-driven regeneration potential, and no corrosion to metal components.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Isabela Araujo Marques, Alvaro Javier Patino-Agudelo, Yara Luiza Coelho, Pedro dos Santos Moreau, Livia Neves Santa Rosa, Ana Clarissa dos Santos Pires, Luis Henrique Mendes da Silva
Summary: The thermodynamic study investigates the inclusion complexes formed between cyclodextrin and surfactants, revealing the impact of hydrophobic/hydrophilic balance on complex formation. It was found that an increase in surfactants' hydrophobicity induced the formation of inclusion complex aggregates.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Agricultural Engineering
Ming Guo, Yilu Zheng, Kaijie Ni, Zhicheng Jin, Jesse V. Jokerst, Qingteng Zhou, Yecen Yao
Summary: In this study, a noncovalent supramolecular system (LGS) consisting of laccase (LAC) and guaiacyl (G)-type monomers was constructed for the conversion of waste lignin. The research revealed that the secondary structure of the LAC binding site changed to accommodate the G-type monomer, resulting in accelerated catalytic reactions. The presence of the LGS system significantly increased the conversion rate of lignin and the production yield of syringyl monomers.
BIORESOURCE TECHNOLOGY
(2022)
Article
Polymer Science
Kathryn E. O'Harra, Emily M. DeVriese, Erika M. Turflinger, Danielle M. Noll, Jason E. Bara
Summary: This study introduces a series of vinyl-imidazolium-based polyelectrolyte composites modified with multivalent imidazolium-benzene ionic liquids or crosslinked with novel cationic crosslinkers. The composites exhibited enhanced CO2 permeabilities and selectivities against N-2 or CH4, demonstrating the potential for tuning the properties and transport behaviors of ionic polymers using ionic liquid-inspired small molecules.
Article
Polymer Science
Amy C. Madl, David Myung
Summary: Over 6.2 million people worldwide suffer from moderate to severe vision loss due to corneal disease. While transplantation with allogenic donor tissue is sight-restoring for many patients with corneal blindness, this treatment modality is limited by long waiting lists and high rejection rates. Host-guest interactions have emerged as an important crosslinking strategy for cytocompatible, minimally invasive, injectable tissue substitutes.
Article
Polymer Science
Srayoshi Roy Chowdhury, Sujay Kumar Nandi, Sahabaj Mondal, Santosh Kumar, Debasish Haldar
Summary: The supramolecular polymer gel formed by non-covalent interactions between beta-cyclodextrin (beta-CD) and naphthalenedimide (NDI) shows elastic properties and potential for use in the fabrication of organic electronic devices.
Article
Chemistry, Physical
Abdelrahman O. Ezzat, Hamad A. Al-Lohedan
Summary: Two imidazolium-based poly ionic liquids were successfully synthesized and tested as efficient demulsifiers for W/O emulsions, demonstrating their ability to reduce interfacial tension at the sea water/crude oil interface.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Alex Spiess, Philipp Brandt, Alexa Schmitz, Christoph Janiak
Summary: Water sorption characteristics of six pure hydrophilic ionic liquids were investigated, revealing a steady and high water uptake with a small hysteresis between absorption and desorption. These findings provide valuable insights into the water sorption behavior of ionic liquids.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Agriculture, Multidisciplinary
Wenjie Li, Weiwei Xu, Siyun Zhang, Jia Li, Juan Zhou, Demei Tian, Jing Cheng, Haibing Li
Summary: Significant progress has been made in the research on drug encapsulation and release based on supramolecular macrocycles, laying a solid foundation for the development of novel nanopesticide preparations.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Physical
M. A. Deyab, M. I. Nessim, Abdelfattah Haikal, Q. Mohsen, N. A. Khalil
Summary: This paper describes the corrosion inhibiting action of four new imidazolium-derived ionic liquids (ILs). Various analytical techniques were used to confirm their molecular formula and characterize their adsorption behavior on a steel substrate. Results showed that these ILs exhibited effective corrosion suppression and adsorbed onto the steel surface through physi-chemisorption. SEM/EDX and FTIR analysis further supported the adsorption process of the ILs.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Salhah H. Alrefaee
Summary: Through DFT computational study, it was found that imidazolium and pyridinium based ionic liquids exhibit good anticorrosive potential, with corrosion inhibition performance depending on the nature of alkyl groups and halide ions. Among the studied ionic liquids, certain compounds were found to show the best corrosion inhibition performance in both imidazolium and pyridinium based categories.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Chemistry, Inorganic & Nuclear
Masoumeh Mohamadhoseini, Zahra Mohamadnia
Summary: The article mainly discusses the different strategies of fabricating HG supramolecular self-healable materials using host-guest interactions between beta-CD and various guest molecules. Comparing different strategies helps to properly address the challenges of this field in the future.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Polymer Science
David Domingo Huguet, Aitor Gual, Ricard Garcia-Valls, Adrianna Nogalska
Summary: This study demonstrates the potential of improving CO2 capture capabilities by supporting ionic liquids (ILs) on a polymeric matrix. The internal morphology and surface characteristics of the membrane were found to influence the ILs sorption capacity and CO2 solubility.
Article
Chemistry, Multidisciplinary
Ileana Recalde, Andres. F. Gualdron-Reyes, Carlos Echeverria-Arrondo, Alexis Villanueva-Antoli, Jorge Simancas, Jhonatan Rodriguez-Pereira, Marcileia Zanatta, Ivan Mora-Sero, Victor Sans
Summary: The use of non-toxic and low-cost alpha-tocopherol (vitamin E) improves the photophysical properties and stability of perovskite nanocrystals (PNCs). Alpha-tocopherol restores the luminescent features and reduces surface defects of aged CsPbI3 PNCs. It also enables the formulation of PNCs-acrylic polymer composites with improved luminescent features and long-term stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Eleanor R. Kearns, Jack K. Clegg, William Lewis, Ada Fang, Bun Chan, Deanna M. D'Alessandro
Summary: As complex materials are widely used in emerging technologies for environmental and energy applications, it is important to be able to quantify their stimuli-response behaviors. In this study, a double [2 + 2] photocyclization reaction in a photoactive material was utilized as a powerful platform to quantitatively investigate solid-state photocyclization kinetics. The results showed a maximum rate observed between 0 degrees C and 20 degrees C of approximately 0.172 s-1, providing the first example of quantification of photocyclization kinetics in a MOF. Density functional theory calculations supported a singlet reaction mechanism for the double [2 + 2] photocyclization.
CHEMISTRY OF MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Claudia Elizabeth Thompson, Lauis Brisolara-Correa, Helen Nathalia Thompson, Hubert Stassen, Loreta Brandao de Freitas
Summary: Plant RNases T2 play important roles in various physiological and developmental processes. Differences in amino acid flexibility, particularly in substrate-binding regions, between S-like RNases and S-RNases are crucial for understanding the RNA-binding process. The positively selected amino acids located in flexible regions of these RNases may be involved in interactions with pathogen proteins and viral RNA. Selective pressures have led to increased amino acid variability and structural differences within and among S-like RNases and S-RNases, which are essential for their functional diversity.
GENETICS AND MOLECULAR BIOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Pedro Migowski, Pedro Lozano, Jairton Dupont
Summary: 1,3-Dialkyl imidazolium salts are versatile ionic liquids (ILs) that can function as solvents, supports, or modifiers for catalytic processes. They can modify the properties of catalysts and control the access of substrates and expulsion of products. The miscibility, hydrophobicity, ionicity, and basicity of ILs can be adjusted by choosing the appropriate alkyl side chain and anions, allowing fine-tuning of the catalytic system. ILs also offer the possibility of designing greener catalytic tools and various methods for product separation.
Article
Chemistry, Multidisciplinary
Alejandra Salas, Marcileia Zanatta, Victor Sans, Ignazio Roppolo
Summary: In recent years, 3D printing has expanded its applications from rapid prototyping and hobbyists to various industries, research fields and everyday life. The focus has shifted towards the development of equipment, software, and materials, especially in the field of light-activated 3D printing which relies on photocurable formulations and rapid solidification via photopolymerization. This article analyzes and explains the chemical aspects of preparing a formulation for light-induced 3D printing, aiming to provide more tools for the development of innovative photocurable materials for 3D printable devices.
Review
Chemistry, Multidisciplinary
Muhammad I. Qadir, Jairton Dupont
Summary: Ionic liquids (ILs) are potential materials for capturing and converting CO2 to energy-adducts. They create a confined space around catalysts, controlling the diffusion of reactants, intermediates, and products through their hydrophobicity and contact ion pairs. By combining ILs with semiconductors, the electronic properties of the catalysts can be modulated to facilitate CO2 activation and increase photoreduction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Natalia Podrojkova, Andrej Orinak, Eduardo Garcia-Verdugo, Victor Sans, Marcileia Zanatta
Summary: Ionic liquids (ILs) as catalysts have significant effects on CO2 transformation. Highly functionalizable and immobilizable imidazolium based ILs (ImILs) have been shown to activate CO2 molecules and demonstrate activity towards CO2 cycloaddition reactions. Adding hydroxyl groups enhances the cycloaddition reaction. An ideal system would combine both functionalities for superior performance. The interaction between the cation-anion and the hydroxyl groups needs to be understood for these advantages to be realized. The viability of using ILs as bifunctional catalysts for one-pot reactions is evaluated through theoretical and experimental studies. DFT simulations using halogenated and hydroxyl functionalized ImLs show that the position of the hydroxyl group influences the epoxide opening and activation for the cycloaddition reaction, facilitating catalysis. Experimental results also demonstrate increased selectivity with catalyst immobilization. For the epoxidation reaction, the DFT calculations and experimental results favor hydrolysis reaction.
Article
Chemistry, Multidisciplinary
Luana D. Lopes, Leonardo P. . Pavan, Itamar L. Goncalves, Paulo F. B. Goncalves, Francisco P. dos Santos, Adailton Joao Bortoluzzi, Fabricio Luiz Faita, Rafaela R. da Rosa, Aloir Antonio Merlo
Summary: The synthesis and characterization of two benzyloxy-terminated isoxazole liquid crystals were studied. The liquid crystal behavior was determined by various techniques, such as POM, DSC, single-crystal XRD, XRD, 7Li-NMR, and DFT calculations. The organization of the smectic A and C mesophases were characterized by XRD, and the nematic cybotactic mesophase was analyzed based on the peak intensity. The correlation length for the monolayer and bilayer organization in the SmC mesophase was determined by XRD.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Vinicius K. Tomazett, Gustavo Chacon, Graciane Marin, Marcus V. Castegnaro, Rafael P. das Chagas, Luciano M. Liao, Jairton Dupont, Muhammad I. Qadir
Summary: Chemical fixation of CO2 to epoxides is an efficient and environmentally friendly approach to produce cyclic carbonates. By using the n-butyl-3-methylimidazulim trichlorozincate (BMIm.ZnCl3) ionic liquid as catalyst, high conversion rates (56-95%) of different aromatic and aliphatic epoxides were achieved under ambient reaction conditions. The activity of the catalyst was further enhanced by supporting the IL on SiO2, resulting in a maximum conversion and yield (99%) of cyclic carbonates at higher reaction conditions. The reaction mechanism was found to involve strong hydrogen bonding between the epoxide oxygen and the C2-H of the imidazolium cation, with the ZnCl3 anion acting as a nucleophile to facilitate ring opening without dissociation.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Multidisciplinary
Max Roemer, William Lewis
Summary: Copper nanostructures were obtained by reducing Cu(I) under mild conditions in ethanol/water using sodium-l-ascorbate and sodium azide in an amination reaction. When reacting the halobenzene substrate in the presence of a bulk carbon black support, clustered copper sub-micrometer particles (SMPs) and microparticles (MPs) were formed. The supported nanostructures were characterized and found to be active catalysts in the azide-alkyne cycloaddition (CuAAC). The catalytic competency of the particles was assessed and optimized conditions were used for the synthesis of triazole compounds.
Article
Chemistry, Inorganic & Nuclear
Roberto Nolla-Saltiel, Ana M. Geer, Helen R. Sharpe, Cameron D. Huke, Laurence J. Taylor, Thomas G. Linford-Wood, Ashleigh James, Jamie Allen, William Lewis, Alexander J. Blake, Jonathan Mcmaster, Deborah L. Kays
Summary: This study reports the synthesis of ruthenium complexes with phosphinocarboxamide ligands and their use in forming metallacycles through halide abstraction/deprotonation reactions. The coordination and structure of these complexes were studied using X-ray diffraction and NMR spectroscopy, revealing the presence of intramolecular hydrogen bonding and rotational isomers in solution.
Article
Chemistry, Physical
Marcileia Zanatta
Summary: This paper provides a comprehensive overview of recent advancements in materials for capturing and converting atmospheric CO2. It discusses the crucial role of materials in achieving efficient and selective CO2 capture and catalysts for CO2 conversion. The paper also explores the multiple roles of direct air capture and integrated CO2 conversion in stabilizing atmospheric CO2.
Article
Materials Science, Multidisciplinary
I. M. Teixeira, L. E. G. Armas, C. Valsecchi, J. W. Menezes
Summary: This work presents a comparison between glass microspheres made from conventional industrial sand and glasses made with rice husk ashes as a source of silica. Both glasses have the same composition and were used for the production of microspheres for road horizontal marking. The results showed that the presence of rice husk ash in the glass composition did not affect the characteristics and performance of the microspheres, indicating that it can be a sustainable alternative material for this application.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2023)
Article
Chemistry, Physical
Muhammad I. Qadir, Marcus V. Castegnaro, Felipe F. Selau, Daniel L. Baptista, Gustavo Chacon, Renato B. Pontes, Allan M. Lisboa, Dario Eberhardt, Jairton Dupont
Summary: Reducing atmospheric CO2 is a major challenge due to increased industrial activities and its contribution to global warming. One effective approach is converting CO2 into C1 feedstocks like formic acid (FA). Ruthenium clusters and nanoparticles prepared by magnetron sputtering in different supported ionic liquid phases (SILPs) showed high efficiency in producing free FA. DFT calculations supported the hydrogenation of HCO3* to FA as the mechanistic approach.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Engineering, Environmental
Ana Silva, Raquel V. Barrulas, Marta C. Corvo, Marcileia Zanatta
Summary: Ionic liquids and poly(ionic liquid)s are promising materials for CO2 capture, but their industrial application has been delayed due to economic and technical issues. This study focuses on the synthesis and characterization of imidazolium and pyrrolidinium-derived ILs and PILs with basic anions, and evaluates their CO2 sorption capacity. The results show great potential for CO2 capture and recycling.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
