Article
Polymer Science
Rajam Elancheliyan, Giovanni Del Monte, Edouard Chauveau, Simona Sennato, Emanuela Zaccarelli, Domenico Truzzolillo
Summary: Poly(N-isopropylacrylamide)-based microgels are soft colloids undergoing a volume phase transition close to ambient temperature. The addition of acrylic acid comonomer modifies the microgel deswelling process, increasing the microgel size and suppressing the volume phase transition. However, it enhances the two-step deswelling of the microgels, where the inner core collapses at lower temperatures than the outer corona. Numerical simulations confirm the impact of charge distribution on the two-step deswelling.
Article
Chemistry, Physical
Samuel Minier, Hyeong Jin Kim, Jonathan Zaugg, Surya K. Mallapragada, David Vaknin, Wenjie Wang
Summary: Modifying nanoparticle surfaces with water-soluble polymers can alter interparticle interactions and affect their assembly into ordered phases. Experiments show that adding NaCl to suspensions induces surface enrichment, and the molecular weight of PNIPAM plays a crucial role in the formation of ordered structures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Polymer Science
Chia-Hsin Ko, Cristiane Henschel, Geethu P. Meledam, Martin A. Schroer, Peter Mueller-Buschbaum, Andre Laschewsky, Christine M. Papadakis
Summary: The temperature-dependent phase behavior and self-assembly behavior of a thermoresponsive amphiphilic diblock copolymer in aqueous solution were studied, revealing a lower critical solution temperature (LCST) behavior at 31.1 degrees Celsius and the formation of different structures of micelles.
Article
Polymer Science
Apisit Banpean, Hideaki Takagi, Nobutaka Shimizu, Noriyuki Igarashi, Shinichi Sakurai
Summary: The study focused on the confined crystallization of PEG in PLLA spherulite in a PLLA/PEG blend specimen using SAXS/WAXS measurements. The results showed suppression of PEG lamellae growth in the thickness direction due to space confinement by preformed PLLA lamellae, while also observing more regular stacking in the blend specimen.
Article
Polymer Science
Sang-In Lee, Min-Guk Seo, June Huh, Hyun-jong Paik
Summary: We investigated the segregation behavior of a molten diblock copolymer, introducing styrene as a comonomer to modulate the interaction between homopolymer and random copolymer block. The temperature dependence of the effective interaction parameter was evaluated using small-angle X-ray scattering (SAXS), which showed good agreement with the mean-field binary interaction model. This study suggests that the introduction of a random copolymer block can effectively reduce the incompatibility of the block copolymer system.
Article
Polymer Science
Sang-In Lee, Min-Guk Seo, June Huh, Hyun-jong Paik
Summary: The temperature dependence of the Flory-Huggins interaction parameter chi for PBA-b-PMMA was quantified using SAXS analysis and RPA theory. The enthalpic contribution of chi was found to be 1.7-4.5 times smaller for PBA-b-PMMA compared to styrene-diene-based block copolymers. This suggests that these fully acrylic components are desirable for constituting terpolymers used in thermally stable and mechanically resilient elastomers.
Article
Engineering, Chemical
Kiko Shoyama, Saki Yamaguchi, Shinya Ogawa, Toshiyuki Takamuku, Hidetaka Kawakita, Keisuke Ohto, Shintaro Morisada
Summary: The study prepared P(NIPAM-TBAM) nanogels by changing conditioning time and found that as the conditioning time increased, the hydrodynamic diameter of the nanogel decreased, and the thermogelling properties changed. It was speculated that the nanogel has a block-like structure composed of TBAM-rich brushes and NIPAM-rich core.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Pranay Amruth Maroju, Ramakrishnan Ganesan, Jayati Ray Dutta
Summary: In this study, a facile solution-based method was used to surface derivatize poly(& epsilon;-caprolactone) films and electrospun fibers with lysozyme, aiming to impart antimicrobial properties and examine the impact on enzymatic degradation. The derivatized films and fibers showed high antibacterial efficacy against Escherichia coli and Staphylococcus aureus. The degradation rate experienced a slight decrease upon lysozyme derivatization, but this reduction was effectively countered by the inclusion of Tween-20.
MACROMOLECULAR BIOSCIENCE
(2023)
Article
Chemistry, Physical
Vikram Singh Raghuwanshi, David Joram Mendoza, Christine Browne, Meri Ayurini, Gediminas Gervinskas, Joel F. Hooper, Jitendra Mata, Chun-Ming Wu, George P. Simon, Gil Garnier
Summary: This study focuses on the synthesis and characterization of thermo-responsive hydrogels based on poly(N-isopropylacrylamide) (PNIPAM)-grafted cellulose nanofibers (CNFs). The results show that grafting PNIPAM onto CNFs changes the LCST of the hydrogels, and at and above the LCST, the PNIPAM chains undergo conformational changes and aggregate near the CNFs, forming large voids in the solution. In contrast, the blended PNIPAM phase separates from CNF to form large aggregates at and above the LCST, without affecting the CNF network.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
Maria Cristina Righetti, Maria Laura Di Lorenzo, Dario Cavallo, Alejandro J. Muller, Massimo Gazzano
Summary: The structural evolution of poly(butylene succinate) (PBS) crystals was studied using synchrotron wide-angle and small-angle X-ray scattering (WAXS and SAXS) analysis after crystallization at 100 degrees C. Isothermal crystallization of PBS resulted in a single lamellar population. The temperature-dependent WAXS/SAXS analysis revealed the development of an additional crystal population characterized by thicker lamellae upon heating, leading to a dual lamellar population. The derived temperature dependence of the lamellar thickness for the two different crystal populations provided structural information that elucidated the multiple melting behavior of PBS.
Article
Polymer Science
Chi Wang, Takeji Hashimoto, Ya-Chen Chuang, Keiji Tanaka, Yen-Pin Chang, Ting-Wei Yang, Meng-Tse Huang
Summary: This study investigates the phase transitions and gelation properties of aqueous solutions of atactic poly(N-isopropylacrylamide). The gel point and critical gel temperature were determined, and a phase diagram was constructed to describe the different phases of the solution. The structure and formation mechanism of gel junctions were also explored.
Article
Polymer Science
Ellen L. Heeley, Jessica Smith, Chaoying Wan, Steven Huband, E. Brambley, Darren J. Hughes
Summary: This study investigates the phenomenon of stress-oscillation (SO) during cold drawing of poly(ethylene terephthalate) (PET) and finds that stress-induced crystallization does not play a role in the process. The opaque bands observed during high strain-rate yielding are attributed to axial voiding.
Article
Biochemistry & Molecular Biology
Nebojsa Zec, Gaetano Mangiapia, Alex C. Hendry, Robert Barker, Alexandros Koutsioubas, Henrich Frielinghaus, Mario Campana, Jose Luis Ortega-Roldan, Sebastian Busch, Jean-Francois Moulin
Summary: The study highlights the importance of combining experimental neutron scattering data with molecular dynamics simulations. By cross-validating scattering data and simulation results, issues encountered in experiments can be addressed and research opportunities maximized. The strengths and weaknesses of each technique are discussed in detail to optimize the combination.
Article
Polymer Science
Chia-Hsin Ko, Cristiane Henschel, Geethu P. Meledam, Martin A. Schroer, Renjun Guo, Luka Gaetani, Peter Mueller-Buschbaum, Andre Laschewsky, Christine M. Papadakis
Summary: The self-assembly of the thermoresponsive amphiphilic diblock copolymer PMMA(21)-b-PNIPAM(283) in various water/methanol mixtures was studied. It was found that the solvent composition significantly affected the internal morphology of micelles and the conformation of dissolved chains.
Article
Materials Science, Multidisciplinary
Yuki Nohara, Erika Saiki, Toshiyuki Shikata
Summary: This study investigates the conformation and structure of poly(vinylidene fluoride) (PVDF) samples with different molecular weights in a solvent. The results indicate that PVDF molecules behave as long rigid rectangular columnar particles in the solution, which is significant for improving the performance of commercial lithium ion batteries.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Gregorio Dal Sasso, Maria Chiara Dalconi, Giorgio Ferrari, Jan Skov Pedersen, Sergio Tamburini, Federica Bertolotti, Antonietta Guagliardi, Marco Bruno, Luca Valentini, Gilberto Artioli
Summary: C-S-H nanoparticles can be used as nucleation seeds to accelerate the hydration process and optimize the mechanical properties and durability of concrete. A multi-scale approach combining experimental analysis and modeling was used to characterize the structure of C-S-H nanoparticles.
Article
Chemistry, Physical
Mariana Kober, Silvia Illa-Tuset, Lidia Ferrer-Tasies, Evelyn Moreno-Calvo, Witold I. Tatkiewicz, Natascia Grimaldi, David Pina, Alejandro Perez Perez, Vega Lloveras, Jose Vidal-Gancedo, Donatella Bulone, Imma Ratera, Jan Skov Pedersen, Dganit Danino, Jaume Veciana, Jordi Faraudo, Nora Ventosa
Summary: This study investigates the stability and formation mechanism of CHOL/CTAB quatsomes, which are nanovesicles formed through the self-assembly of cholesterol and cetyltrimethylammonium bromide in water. Experimental and simulation results show that CHOL/CTAB quatsomes are thermodynamically stable nanovesicles, but they do not exhibit the classical membrane curvature induced by composition asymmetry.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Max Hohenschutz, Pierre Bauduin, Carlos G. Lopez, Beate Foerster, Walter Richtering
Summary: Nanometer-sized anions (nano-ions) exhibit superchaotropic behavior, which enhances the viscosity and induces gelation of aqueous solutions of non-ionic cellulose ethers (CEs). This is due to the interplay of attractive and repulsive forces between CE-chains upon nano-ion binding. Superchaotropic nano-ion binding is a novel and general physical crosslinking motif for CE-solutions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Helena O. Rasmussen, Amit Kumar, Ben Shin, Fisentzos Stylianou, Lee Sewell, Yingqi Xu, Daniel E. Otzen, Jan Skov Pedersen, Steve J. Matthews
Summary: Bacterial functional amyloids contribute to biofilm development and serve as a protective mechanism against the immune system and antibiotics. Recent interest has focused on strategies to target amyloid formation and interrupt biofilm formation due to their antimicrobial potential. The interaction between the components FapA, FapB, and FapC is crucial for Fap fibril biogenesis, with FapA acting as a chaperone to prevent FapC fibrillation in the periplasm.
JOURNAL OF MOLECULAR BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Sarah K. Wypysek, Silvia P. Centeno, Till Gronemann, Dominik Woell, Walter Richtering
Summary: Microgels with specific architectural and chemical design can selectively absorb and release small molecules, or protect their cargo from the environment. This study focuses on the synthesis and analysis of hollow anionic p(N-isopropylacrylamide-co-itaconic acid) microgels, as well as investigating their interactions with cytochrome c protein at different pH values. The results reveal that cytochrome c is mainly trapped within the microgel, with pH controlling its localization.
MACROMOLECULAR BIOSCIENCE
(2023)
Article
Chemistry, Physical
Alexander Petrunin, Steffen Bochenek, Walter Richtering, Andrea Scotti
Summary: Ultra-low crosslinked (ULC) nanogels can efficiently stabilize emulsions, showing resistance to droplet flocculation, stability against coalescence, and responsiveness to temperature changes. The polymer-particle duality of ULC nanogels can be utilized to enhance emulsion properties for various applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Polymer Science
Thomas Nevolianis, Andrea Scotti, Alexander V. Petrunin, Walter Richtering, Kai Leonhard
Summary: Obtaining deuterated micro- and nanogels is crucial for studying their architecture and response to crowding. Experimental studies have shown that deuterated microgels have a higher volume phase transition temperature (VPTT) than hydrogenated microgels. However, the impact of deuteration on microgel properties is not fully understood, raising questions about their responsiveness, structure, and compressibility.
Article
Engineering, Biomedical
Mattis Wachendoerfer, Eva Miriam Buhl, Ghazi Ben Messaoud, Walter Richtering, Horst Fischer
Summary: This study investigates the cross-linking mechanisms of fibrin-collagen blends and suggests that chemical cross-linkers have a minor role. It is found that pH and thrombin concentration play a crucial role in the synthesis of blends with high stiffness and hydrolytic stability. The study reveals that the blends mainly cross-link through physical interactions, leading to a highly interpenetrating fibrous network with interconnected open-porous microstructures.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fabian Hagemans, Fabrizio Camerin, Nabanita Hazra, Janik Lammertz, Frederic Dux, Giovanni Del Monte, Olli-Ville Laukkanen, Jerome J. Crassous, Emanuela Zaccarelli, Walter Richtering
Summary: Hollow microgels are interesting model systems that can deform, interpenetrate, and shrink under certain conditions. In this study, microgels with a micrometer-sized cavity were characterized using fluorescence microscopy techniques. It was found that these microgels reversibly buckle above a critical osmotic pressure, unlike smaller hollow microgels which deswell at high volume fractions. Simulations confirmed the buckling transition and suggested that a thin shell model theory can describe the behavior of these microgels. The microgels, referred to as microgel capsules, can be used to probe interfacial properties and mimic anisotropic responsive biological systems.
Article
Nanoscience & Nanotechnology
Ewan K. S. McRae, Helena Ostergaard Rasmussen, Jianfang Liu, Andreas Boggild, Michael T. A. Nguyen, Nestor Sampedro Vallina, Thomas Boesen, Jan Skov Pedersen, Gang Ren, Cody Geary, Ebbe Sloth Andersen
Summary: RNA origami is a method for designing RNA nanostructures that can self-assemble through co-transcriptional folding. This study uses cryogenic electron microscopy to determine the structure of RNA origami sheets and bundles, revealing structural parameters and folding principles. The study also combines sheets and bundles to construct a multidomain satellite shape and characterizes its flexibility using cryo-electron tomography.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Siyang He, Simon Schog, Ying Chen, Yuxin Ji, Sinan Panitz, Walter Richtering, Robert Goestl
Summary: The serial connection of multiple stimuli-responses in polymer architectures enables the gating of functional material processes on demand. In this study, a photoswitchable diarylethene is used as a crosslinker in poly(N-vinylcaprolactam) microgels to induce a shift in volume phase-transition temperature (VPTT). By switching the microgels from the swollen to the collapsed state using light, their response to mechanical force can be controlled. This photoinduced mechanical cloaking system operates on a polymer topology level and is universally applicable.
ADVANCED MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Christian E. Rusbjerg-Weberskov, Mette Liere Johansen, Jan S. Nowak, Daniel E. Otzen, Jan Skov Pedersen, Jan J. Enghild, Nadia Sukusu Nielsen
Summary: Human periostin is a matricellular protein that plays important roles in extracellular matrix remodeling, tumor development, and inflammatory diseases. The C-terminal domain of periostin interacts with other domains and proteins, potentially contributing to the pathogenesis of diseases such as atopic dermatitis.
Article
Chemistry, Multidisciplinary
Ghazi Ben Messaoud, Sanja Aveic, Mattis Wachendoerfer, Horst Fischer, Walter Richtering
Summary: Porous hydrogels derived from aqueous two-phase systems (ATPS) are an interesting alternative to overcome the restricted porosity of most hydrogels in vitro. By tuning the phase behavior and concentration, ATPS hydrogels with three distinct microstructures, including bicontinuous hydrogels with interconnected pores, can be formed. These ATPS hydrogels show cytocompatibility and can sustain their unique porous structure when processed by inkjet and microextrusion techniques.
Article
Materials Science, Biomaterials
Mattis Wachendorfer, Philipp Schraeder, Eva Miriam Buhl, Alena L. Palkowitz, Ghazi Ben Messaoud, Walter Richtering, Horst Fischer
Summary: By subjecting the gelatin component to controlled heat treatment prior to blend synthesis, it is possible to influence the properties of the hydrogel blends, improving long-term stability and opening up new possibilities for tissue engineering in vitro experiments.
BIOMATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Andrea Scotti, Urs Gasser, Alexander Petrunin, Lisa Fruhner, Walter Richtering, Judith E. Houston
Summary: This study used small-angle neutron scattering to investigate the bulk modulus of polymeric nanocapsules and found that the size of the cavity is the most important factor determining the softness of the nanocapsules.
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)