Article
Biochemistry & Molecular Biology
Santiago Oviedo-Rouco, Cecilia Spedalieri, Magali F. Scocozza, Florencia Tomasina, Veronica Tortora, Rafael Radi, Daniel H. Murgida
Summary: Cytochrome c is a multifunctional protein that shuttles electrons in the mitochondrial respiratory chain, with conformational transitions leading to alternative functions crucial for apoptosis. Physicochemical parameters characterizing electron transfer and conformational transitions are strongly correlated and modulated by local electric fields. Optimal electron shuttling occurs at moderate local electric field strengths, while deviations from this optimal range favor alternative conformations and functions.
BIOELECTROCHEMISTRY
(2022)
Article
Spectroscopy
Jakub Slawski, Sebastian Szewczyk, Gotard Burdzinski, Krzysztof Gibasiewicz, Joanna Grzyb
Summary: Transient absorption spectroscopy was used to investigate the early photodynamics in a system of CdTe quantum dots (QDs) and cytochrome c (Cyt c) protein. About 25% of excited QD electrons in the QDs and Cyt c mixtures quickly relax to the ground state, while roughly 75% decay on a slower time scale, mainly due to quenching by Cyt c. Energy transfer is the primary quenching mechanism, but electron transfer also contributes significantly, resulting in photoreduction of Cyt c.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Multidisciplinary Sciences
Guosheng Chen, Linjing Tong, Siming Huang, Shuyao Huang, Fang Zhu, Gangfeng Ouyang
Summary: This study presents the design of an exogenous hydrogen-bonded organic framework to modulate the conformation of cytochrome c, enabling non-native bioactivity for the enzyme. By manipulating the flexible conformation of the enzyme, the researchers demonstrate the advantages of artificial hydrogen-bonded scaffolds in modulating enzyme activity.
NATURE COMMUNICATIONS
(2022)
Article
Cell Biology
Sue Ellen Brand, Martha Scharlau, Lois Geren, Marissa Hendrix, Clayre Parson, Tyler Elmendorf, Earl Neel, Kaila Pianalto, Jennifer Silva-Nash, Bill Durham, Francis Millett
Summary: Cytochrome c (Cc) has undergone accelerated evolution from anthropoid primates to humans, with several amino acid changes occurring near the binding site of the Cc:CcO complex. These changes affect the dissociation constant and the role of phosphorylation in regulating mitochondrial electron transport and membrane potential.
Article
Multidisciplinary Sciences
Agnes Moe, Justin Di Trani, John L. Rubinstein, Peter Brzezinski
Summary: Energy conversion in aerobic organisms involves electron transfer from low-potential donors to dioxygen through the membrane-bound respiratory chain. The formation of supercomplex CIII2CIV1/2 facilitates electron transfer by two-dimensional diffusion of cyt. c, increasing QH(2):O-2 oxidoreductase activity and suggesting a regulatory role for supercomplex formation in the respiratory chain.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Sciences
Lei Chen, Mingpeng Wang, Yujie Feng, Xiaoyu Xu, Xiaobo Luo, Zhaojie Zhang
Summary: Xanthomonas, a common plant pathogen found in biocontaminated bioreactors, was found to exhibit characteristics such as reduction of metal Fe (III) and decolorization of methyl orange in vitro. This microorganism was able to generate bioelectricity and had two extracellular electron transfer pathways, with the indirect transfer method being dominant and faster than direct transfer. The study highlights a novel anaerobic mechanism for Xanthomonas survival during wastewater treatment and suggests potential strategies for preventing its growth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xing Yan, Jie Bu, Xiong Chen, Ming-Jun Zhu
Summary: Microbial extracellular respiration, including Fe(III) and electrode respiration, was observed in Thermoanaerobacterium thermosaccharolyticum MJ2. Comparative genomic analysis revealed the intra/extracellular electron transfer mechanism of MJ2, with hydrogenase and cytochrome c playing crucial roles. Moreover, the addition of exogenous Cyt-c significantly increased the bioelectricity generation by MJ2.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Kevin M. Rosso, Piotr Zarzycki
Summary: This article summarizes the progress in unveiling nature's long-range charge transport mechanisms in redox proteins and the development of versatile self-assembling scaffolds. These two separate fields may soon intersect to yield the first artificial bioelectronic wires. Notably, Dai et al.'s work in ACS Nano demonstrates intentional design with nuanced control, successfully binding multiple c-type hemes into a specific ordered array reminiscent of heme chains in bacterial multiheme cytochromes.
Article
Crystallography
Rita Chertkova, Tatyana Bryantseva, Nadezhda A. Brazhe, Kseniya S. Kudryashova, Victor V. Revin, Alexei N. Nekrasov, Alexander Yusipovich, Alexey R. Brazhe, Andrew B. Rubin, Dmitry A. Dolgikh, Mikhail P. Kirpichnikov, Georgy Maksimov
Summary: The secondary structure of horse cytochrome c with mutations in the P(76)GTKMIFA(83) site of the Omega-loop, exhibiting reduced efficiency of electron transfer, was studied. CD spectroscopy and IR spectroscopy data showed changes in structural elements, with an increase in beta-structural elements and a decrease in non-structured elements. H-1-NMR spectra analysis revealed specific features in the secondary structure related to changes in the heme microenvironment. These changes likely contribute to the decreased efficiency of electron transfer in the studied cytochromes c.
Article
Biochemistry & Molecular Biology
Giulia Di Rocco, Antonio Ranieri, Marco Borsari, Marco Sola, Carlo Augusto Bortolotti, Gianantonio Battistuzzi
Summary: The Met80Ala variant of yeast cytochrome c shows promising biocatalytic and biosensing properties due to its stable electrocatalytic properties in mixed solvents. Organic solvents have minimal effects on the redox and structural properties of the variant.
Article
Chemistry, Multidisciplinary
Huijie Han, Jie Chen, Jiachen Li, Alexandra Correia, Raquel Bartolo, Mohammad-Ali Shahbazi, Tambet Teesalu, Shiqi Wang, Wenguo Cui, Helder A. Santos
Summary: Apoptosis is a programmed cell death process responsible for abnormal cell clearance. Cancer cells often develop mechanisms to escape apoptosis, posing a challenge in cancer treatment. A biomimetic lipid nanocarrier that mimics mitochondrial Cytochrome C binding has been developed. This nanocarrier shows great potential in pro-apoptosis cancer therapy, reducing ATP level and promoting apoptosome assembly, leading to higher apoptosis and anti-tumor efficacy.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Inorganic & Nuclear
Gonzalo Perez-Mejias, Antonio Diaz-Quintana, Alejandra Guerra-Castellano, Irene Diaz-Moreno, Miguel A. De la Rosa
Summary: The supramolecular arrangement of respiratory complexes into supercomplexes leads to a reduction in distance between cytochrome bc(1) and cytochrome c oxidase, facilitating more efficient electron transfer and control. This allows for a novel mechanistic insight into electron transfer processes, which involves modulation of redox potential and long-range electron transfer through an aqueous solution.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Sophia Selvarajan, Hyunji Shim, Eunjeong Byun, Albert Kim, Seung Hyun Song
Summary: This study presents an acousto-nanodevice that can oxidize redox proteins under ultrasonic irradiation. By using surface-engineered barium titanate (BTO) nanoparticles with a gold half-coating, the nanodevice is capable of modulating the redox proteins and enabling unidirectional electron transfer. This new class of ultrasonically powered nano-sized protein redox agents has the potential to be a highly selective modulator for biological processes with deeper treatment sites.
Article
Plant Sciences
Alejandro Torrado, Macarena Iniesta-Pallares, Adrian Velazquez-Campoy, Consolacion Alvarez, Vicente Mariscal, Fernando P. Molina-Heredia
Summary: This study investigates the function and classification of cytochrome c(6)-like proteins in photosynthetic cyanobacteria, and provides new data on the phylogeny, genome localization, and functional properties of these proteins. The findings suggest that cytochrome c(6)-like proteins may interact with the cytochrome b(6)f complex in a similar way as cytochrome c(6), and cytochrome c(6)D can react with the specific copper-oxidase in heterocysts.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Engineering, Environmental
Chunlei Liu, Zhongrui Guo, Hanrui Zhang, Jianfei Li, Chao Zhu, Guibing Zhu
Summary: In this study, the electron transfer mechanism of nanoscale zero-valent iron (nZVI) coupled denitrification was investigated using heavy water labeling single-cell Raman spectroscopy. The results showed that nZVI had a strong synergistic effect on denitrification efficiency, and Cytochrome c played an important role in the electron transfer process. This study deepened the understanding of the biotic-abiotic synergistic mechanism and provided a new method for in-situ characterization of the electron transfer process at a single-cell level.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Miguel A. De la Rosa
Summary: Writing a research proposal is not an easy task and requires consideration of three development stages from the beginning. It involves having innovative and unique ideas, presenting project feasibility and persuasion, and obtaining resources for local implementation. The most challenging task is thinking outside the box and developing original thoughts, which requires reading scientific literature and understanding competitors. Communication is also crucial, utilizing the three pillars of Aristotle's Rhetorical Triangle.
TURKISH JOURNAL OF BIOCHEMISTRY-TURK BIYOKIMYA DERGISI
(2022)
Review
Chemistry, Inorganic & Nuclear
Gonzalo Perez-Mejias, Antonio Diaz-Quintana, Alejandra Guerra-Castellano, Irene Diaz-Moreno, Miguel A. De la Rosa
Summary: The supramolecular arrangement of respiratory complexes into supercomplexes leads to a reduction in distance between cytochrome bc(1) and cytochrome c oxidase, facilitating more efficient electron transfer and control. This allows for a novel mechanistic insight into electron transfer processes, which involves modulation of redox potential and long-range electron transfer through an aqueous solution.
COORDINATION CHEMISTRY REVIEWS
(2022)
Review
Chemistry, Physical
Hung-Vu Tran, Nhat M. Ngo, Riddhiman Medhi, Pannaree Srinoi, Tingting Liu, Supparesk Rittikulsittichai, T. Randall Lee
Summary: This review article summarizes the fabrication of current composite nanoplatforms based on the integration of magnetic IONPs with organic dyes, biomolecules, quantum dots, noble metal NPs, and stimuli-responsive polymers, and highlights their potential use in biomedical applications.
Article
Plant Sciences
Consolacion Alvarez, Manuel Brenes-Alvarez, Fernando P. Molina-Heredia, Vicente Mariscal
Summary: This study analyzed the protein changes in rice and nostoc during the early stages of symbiosis using mass spectrometry, and identified differentially expressed proteins related to signal transduction, adhesion, defense, and cell wall modification. The study also revealed new proteins activated during the early stages of the nostoc-rice symbiosis. These findings provide important insights into the symbiotic interaction between nostoc and land plants.
PLANT AND CELL PHYSIOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Konstantin Laun, Benjamin R. Duffus, Stefan Wahlefeld, Sagie Katz, Dennis Belger, Peter Hildebrandt, Maria Andrea Mroginski, Silke Leimkuehler, Ingo Zebger
Summary: It is found that the Mo-dependent formate dehydrogenase from Rhodobacter capsulatus can catalyze the oxidation of formate to CO2. Infrared spectroscopy, density functional theory, and inhibition kinetics were used to investigate the interaction between the enzyme and inhibitory molecules. The study reveals potential non-competitive or competitive binding sites for the inhibitors in the secondary coordination sphere of the active site.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Tillmann Utesch, Jana Staffa, Sagie Katz, Guiyang Yao, Jacek Kozuch, Peter Hildebrandt
Summary: The article investigates the effect of electrode potential on the transmembrane potential of lipid bilayers immobilized on gold electrodes. Experimental results and molecular dynamics simulations show good agreement, indicating the promising potential of this combined approach in studying potential-dependent processes at biomimetic interfaces.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Review
Materials Science, Multidisciplinary
Yunsoo Choi, Hung-Vu Tran, T. Randall Lee
Summary: The resistance of surfaces to biomaterial adsorption/adhesion is crucial for the progress of marine and biomedical industries. Self-assembled monolayers (SAMs) provide a powerful platform to modify surfaces with different properties and understand the interaction between biomolecules and surfaces.
Article
Chemistry, Physical
Konstantin Laun, Benjamin R. Duffus, Hemant Kumar, Jean-Pierre H. Oudsen, Chara Karafoulidi-Retsou, Armel Tadjoung Waffo, Peter Hildebrandt, Khoa Hoang Ly, Silke Leimkuehler, Sagie Katz, Ingo Zebger
Summary: A minimal light-driven approach was developed to study enzymatic CO2 conversion. This approach allows for in situ characterization of the catalytic reaction and provides a new way to regulate enzyme reactions using light.
Article
Chemistry, Multidisciplinary
Vladimir Pelmenschikov, Delfim Ferreira, Sofia S. Venceslau, Peter Hildebrandt, Ines A. . C. Pereira, Smilja Todorovic, Smilja Todorovic
Summary: In this study, resonance Raman spectroscopy and density functional theory calculations were used to investigate the structural, electronic, and vibrational properties of the noncubane [4Fe-4S] cluster in heterodisulfide reductase (HdrB). Homology modeling was employed to predict the protein environment of the neighboring clusters in DvHdrB. The results showed that the oxidized [4Fe-4S](3+) cluster adopts a closed conformation in the absence of substrate, but transitions to an open structure upon substrate coordination, accompanied by a ligand switch. This study provides valuable insights for future research on enzymes with this unconventional cofactor.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Victoria Davis, Nina Heidary, Amandine Guiet, Khoa Hoang Ly, Maximilian Zerball, Claudia Schulz, Norbert Michael, Regine von Klitzing, Peter Hildebrandt, Stefan Frielingsdorf, Oliver Lenz, Ingo Zebger, Anna Fischer
Summary: The oxygen tolerance of membrane-bound [NiFe] hydrogenase (MBH) from Cupriavidus necator makes it an attractive electrocatalyst for hydrogen energy conversion devices. By immobilizing MBH with affinity tags on a tin-rich indium tin oxide (ITOTR) electrode, hydrogen oxidation and an unusually high proton reduction current were observed, suggesting bidirectionality in unidirectional [NiFe] hydrogenases. The favorable enzyme-semiconductor interactions contribute to this behavior.
Review
Biochemistry & Molecular Biology
Peter Hildebrandt
Summary: This review summarizes how resonance Raman and IR spectroscopy contributed to the understanding of the structure, dynamics, and reaction mechanism of phytochromes. It also discusses the challenges faced in experimental and theoretical research and describes strategies to overcome them.
Article
Plant Sciences
Alejandro Torrado, Macarena Iniesta-Pallares, Adrian Velazquez-Campoy, Consolacion Alvarez, Vicente Mariscal, Fernando P. Molina-Heredia
Summary: This study investigates the function and classification of cytochrome c(6)-like proteins in photosynthetic cyanobacteria, and provides new data on the phylogeny, genome localization, and functional properties of these proteins. The findings suggest that cytochrome c(6)-like proteins may interact with the cytochrome b(6)f complex in a similar way as cytochrome c(6), and cytochrome c(6)D can react with the specific copper-oxidase in heterocysts.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Susana Redondo-Gomez, Jennifer Mesa-Marin, Jesus A. Perez-Romero, Vicente Mariscal, Fernando P. Molina-Heredia, Consolacion Alvarez, Eloisa Pajuelo, Ignacio D. Rodriguez-Llorente, Enrique Mateos-Naranjo
Summary: Rice is a key crop for food security and the excessive use of chemical fertilizers causes environmental problems. This study investigates the use of beneficial bacteria from halophytes as a sustainable alternative for promoting rice growth. The results show that these biofertilizers can enhance rice growth and photosynthetic efficiency under saline conditions and future climate change scenarios.
Article
Chemistry, Multidisciplinary
Tarali Devi, Kuheli Dutta, Jennifer Deutscher, Stefan Mebs, Uwe Kuhlmann, Michael Haumann, Beatrice Cula, Holger Dau, Peter Hildebrandt, Kallol Ray
Summary: This study emphasizes the importance of subtle electronic changes and secondary interactions in the stability of biologically relevant metal-dioxygen intermediates. It also shows that the role of the chloride ligand in stabilizing the Fe-III-(OOBu)-Bu-t moiety can extend to other anions, including the thiolate ligand.
Article
Chemistry, Physical
Maria Fernandez Lopez, Margarethe Dahl, Francisco Velazquez Escobar, Hernan Ruy Bonomi, Anastasia Kraskov, Norbert Michael, Maria Andrea Mroginski, Patrick Scheerer, Peter Hildebrandt
Summary: This study investigates the structure and mechanistic properties of different types of phytochromes in bacteria using resonance Raman and IR difference spectroscopy, and reveals subtle differences in the photoinduced conversions and proton transfer processes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
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)
