Article
Chemistry, Multidisciplinary
Pragati Shukla, Madan D. Ambhore, Venkataramanarao G. Anand
Summary: The electronic properties of a hexaphyrin were fine-tuned by core-modification, resulting in a Huckel aromatic 30 pi hexaphyrin with two pyrrole and four furan rings in the pi-conjugated pathway. This Huckel aromatic hexaphyrin changed its conformation upon two-electron ring oxidation with triflic acid or Meerwein salt [Et3O](+)[SbCl6](-), forming 28 pi Mobius aromatic dication species. The reversible aromatic transition was confirmed through spectroscopic techniques and quantum chemical calculations.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Rakesh Kumar, Piotr J. Chmielewski, Tadeusz Lis, Dirk Volkmer, Marcin Stepien
Summary: Tridecacyclene tetraimide (TCTI), an electron-deficient non-benzenoid nanocarbon, was synthesized with a concise method. TCTI has a non-planar structure and forms pi-stacked dimers in the solid state. In solution, it undergoes eight single-electron reductions, resulting in a range of negatively charged states. The TCTI anions exhibit extended near-infrared absorptions, with a strong band at 1692 nm for the dianion. Computational analysis indicates that the stability of TCTI anions is attributed to the electron-deficient imide groups and the local aromaticity of the reduced acenaphthylene units. TCTI shows potential applications in electrochromic and charge storage fields.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Hirokazu Miyoshi, Ryosuke Sugiura, Ryohei Kishi, Sarah N. Spisak, Zheng Wei, Atsuya Muranaka, Masanobu Uchiyama, Nagao Kobayashi, Shreyam Chatterjee, Yutaka Ie, Ichiro Hisaki, Marina A. Petrukhina, Tohru Nishinaga, Masayoshi Nakano, Yoshito Tobe
Summary: The dianion and dication of tetramesityl-substituted tetracyclopentatetraphenylene, a circulene consisting of alternating five- and six-membered rings, have been successfully synthesized by reduction and oxidation methods. The theoretical prediction of annulene-within-an-annulene structures has been experimentally proven, with electronic configurations supported by MCD spectra. The distribution of electron charges inside and outside the ions has also been confirmed through experimental analyses.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Shaofei Wu, Yong Ni, Yi Han, Xudong Hou, Congyong Wang, Wenping Hu, Jishan Wu
Summary: In this study, a facilely synthesized molecular cage containing bridged triphenylamine units and quinoidal bithiophene arms was examined. The results demonstrated different aromatic properties of the cage in different oxidation states, providing further insight into the relationship between 2D Hückel/Baird aromaticity and 3D global π-aromaticity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Junqing Yang, Gazi Hao, Rui Guo, Hu Guo, Wei Jiang, Jianguo Zhang
Summary: Based on Diels-Alder reactions, researchers constructed a newly nitrogen-rich energetic compound, EC-1, by selecting suitable starting materials and comparing the reactivity of different dienes. The study also revealed the relationship between the reactivity difference of Diels-Alder reactions and the distortion of dienes.
NEW JOURNAL OF CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Sergio Moles Quintero, Michael M. Haley, Miklos Kertesz, Juan Casado
Summary: This article provides conceptual connections between [4n] Huckel antiaromaticity, disjoint orbitals, correlation energy, pro-aromaticity and diradical character for a variety of extended pi-conjugated systems, including nanographenes and polycyclic aromatic radicals. Understanding these structure-property relationships is beneficial for establishing design guidelines for diradicaloids.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Environmental Sciences
Yujie Zhou, Xiaoguo Zhang, Jin Deng, Chun Li, Keyuan Sun, Xiaodong Luo, Shenfu Yuan
Summary: The development of efficient bio-char for phenol removal from wastewater is crucial for environmental protection. Acid-washed and activated bio-char exhibited excellent phenol removal efficiency and regeneration capacity. The mechanism of activated bio-char adsorption provides valuable insights for the removal of organic pollutants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Xinwen Gai, Lei Zhang, Jingang Wang
Summary: In this paper, the electronic structure and bonding character of dehydro[10]annulene were studied using various analysis methods. The delocalization characteristics of pi(out) and pi(in)-electrons were investigated, as well as the molecular response to external magnetic field. The results showed that the electron delocalization of dehydro[10]annulene is mainly contributed by the pi(out) system, and it exhibits pi(out) aromaticity. The photophysical properties and (hyper)polarizability of dehydro[10]annulene were also studied. The results revealed its strong local excitation characters and nonlinear anisotropy.
Article
Biochemistry & Molecular Biology
Nikolay V. Tkachenko, Alvaro Munoz-Castro, Alexander I. Boldyrev
Summary: The study on the chemical bonding of metallabenzenes and metallabenzynes revealed a unique bonding pattern that complies with Huckel's aromaticity rule. Two thermodynamically stable novel molecules were proposed, showing doubly aromatic properties.
Article
Materials Science, Multidisciplinary
QingYang Li, YanFei Hu, YuanYuan Li, XiaoFeng Tian, YuQuan Yuan, Hang Yang, Ming He
Summary: In this work, a combination of the CALYPSO method and DFT calculations is employed to perform a comprehensive structural search of Ta2Bn (n = 10 - 20) clusters. The ground state structures of Ta2Bn clusters at each size are determined based on their total energy and symmetry. It is found that Ta2B16 and Ta2B18 clusters exhibit excellent stability, with unique bicyclic boron rings and two Ta atoms as axes. The strong interaction between two Ta atoms and the outer B16/18 bicyclic ring is the primary factor contributing to their significant stability.
RESULTS IN PHYSICS
(2023)
Article
Engineering, Environmental
Tianjiang Sun, Weijia Zhang, Qingshun Nian, Zhanliang Tao
Summary: The developed PTO-4NH2Ph polymer exhibits good cycling stability and high discharge capacity in aqueous zinc ion batteries, thanks to the introduced pi-conjugated amino groups and extended aromatic plane. Furthermore, the polymer also improves its performance by achieving dominated proton insertion from weakly acidic zinc electrolyte.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
P. E. Swathi Krishna, Vivek V. Dev, Remya Ramakrishnan, Mahesh Hariharan
Summary: The potential concept of aromaticity in the relaxed lowest triplet state of azobenzene, a molecular switch, has been discussed using different aromaticity indices. The study reveals the presence of Huckel aromatic character in the relaxed T-1 state of azobenzene, as well as stilbene and N-diphenylmethanimine, highlighting the significance of excited-state aromaticity in the design of molecular switches.
Article
Chemistry, Multidisciplinary
Barbara Ejlli, Pascal Nussbaum, Frank Rominger, Jan Freudenberg, Uwe H. F. Bunz, Klaus Muellen
Summary: The cyclotrimerization of 9,10-dibromo-9,10-dihydrodibenzo[3,4:7,8]cycloocta[1,2-l]phenanthrene with potassium tert-butoxide in the presence of a transition-metal catalyst yielded two polycyclic aromatic hydrocarbon stereoisomers consisting of three cyclooctatetraene (COT) moieties connected via a central benzene ring. The isomers were selectively obtained through the choice of catalyst, with the Ru catalyst displaying threefold symmetry and the Pd catalyst showing thermodynamic stability. The resulting compounds are small segments of cubic graphite, an elusive carbon allotrope.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Erlong Li, Mengjia Jin, Ruijun Jiang, Lei Zhang, Yanli Zhang, Meiyan Liu, Xiaoming Wu, Xuguang Liu
Summary: Boron/nitrogen-doped fluoranthenes, a new class of BN-doped cyclopenta-fused polycyclic aromatic hydrocarbons, were synthesized via pyrrolic-type nitrogen directed C-H borylation. Regioselective bromination of BN-fluoranthene (3a) gave mono- and dibrominated BN-fluoranthenes. The halogenated BN-fluoranthene (3b) can undergo various further cross-coupling reactions to deliver a series of BN-fluoranthenes. Moreover, incorporating BN unit into fluoranthene resulted in a wider HOMO-LUMO energy gaps. The aromaticities of the BN-fluoranthene were shown by computational studies.
Article
Chemistry, Multidisciplinary
Cheng Zeng, Yujian Liu, Ning Xue, Wei Jiang, Shouke Yan, Zhaohui Wang
Summary: A novel kind of monocyclic and dicyclic dehydro[20]annulenes with specific sizes and topologies are developed through Cu-catalyzed homo-coupling and cross-coupling of regioselective unilateral ortho-diethynyl PDI. The integration of electron-deficient PDI chromophores into the dehydroannulene scaffolding results in intense absorption properties and degenerated LUMO levels. Single-crystal X-ray diffraction analysis reveals unique porous supramolecular structures with micropore characteristics and a surface area of 120.74 m(2) g(-1).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Xabier Telleria-Allika, Jesus M. Ugalde, Eduard Matito, Eloy Ramos-Cordoba, Mauricio Rodriguez-Mayorga, Xabier Lopez
Summary: In this study, the singlet and triplet spin state energies for three-dimensional Hooke atoms, specifically with an even number of electrons, were investigated using Full-CI and CASSCF wavefunctions and various basis sets. The screening effect of electron-electron interaction was also examined using a Yukawa-type potential. The results reveal that the ground state is a singlet for two and eight electron Hooke atoms, while it is a triplet for 4, 6, and 10-electron systems. This study provides insights into the energy components and effects of confinement and electron-electron interaction.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tianjiao Xue, You-Song Ding, Daniel Reta, Qi-Wei Chen, Xiaofei Zhu, Zhiping Zheng
Summary: In this study, three new single-molecule magnets (SMMs) were reported for potential applications in information storage and quantum processing. These SMMs demonstrated similar magnetic properties but distinct quantum tunnelling of magnetization (QTM) relaxation times, suggesting the influence of nonmagnetic components and crystal environment on the behavior of SMMs.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Xabier Telleria-Allika, Jose M. Mercero, Jesus M. Ugalde, Xabier Lopez, Jon M. Matxain
Summary: In this work, we computed and implemented one-body integrals for Gaussian confinement potentials and established an equivalence between Gaussian and Hooke atoms. We observed that both systems are equivalent for a series of even number of electrons at large confinement depths. Unlike harmonic potentials, Gaussian confinement potentials are dissociative and crucial for modeling phenomena like ionization.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Chemistry, Organic
Leire Villaescusa, Iker Hernandez, Laura Azcune, Ainhoa Rudi, Jose M. Mercero, Aitor Landa, Mikel Oiarbide, Claudio Palomo
Summary: The catalytic addition of hydantoin surrogates to rigidified vinylidene bis(sulfone) reagents was achieved, overcoming the unreactivity of commonly used beta-substituted vinylic sulfones. The resulting adducts were transformed into enantioenriched 5,5-disubstituted hydantoins through hydrolysis and reductive desulfonylation processes, offering new structures for potential bioassays. Density functional theory studies provided insights into the observed reactivity and stereoselectivity trends.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
Antonio Reifs, Irene Ruiz Ortiz, Amaia Ochandorena Saa, Jorg Schonfelder, David De Sancho, Victor Munoz, Raul Perez-Jimenez
Summary: Ultrafast folding proteins have low energetic barriers and fast kinetics, making them suitable for study by both experiments and simulations. However, single molecule force spectroscopy experiments on these proteins are challenging due to the lack of mechanical fingerprints. In this study, the unfolding of an ultrafast protein is investigated using atomic force microscopy experiments.
COMMUNICATIONS PHYSICS
(2023)
Article
Chemistry, Physical
Patricia Poths, Borna Zandkarimi, Anastassia N. Alexandrova, Elisa Jimenez-Izal
Summary: This study explores the effect of Ge content on PtGe cluster alloys for ethane dehydrogenation. It is found that the addition of Ge improves the stability and selectivity of the catalyst, with the optimal Ge to Pt ratio being 1:4. The concentration of Ge plays an important role in the stability and selectivity of Pt clusters.
Article
Chemistry, Physical
Juan Felipe Huan Lew-Yee, Mario Piris, Jorge M. del Campo
Summary: This study evaluated the performance of the recently proposed global natural orbital functional (GNOF) in addressing the charge delocalization error. GNOF achieves a good balance between static and dynamic electronic correlations, resulting in accurate total energies and preserved spin for systems with a highly multi-configurational character. Various analyses were conducted to assess the functional, including the charge distribution in super-systems of two fragments, stability of ionization potentials with increasing system size, and potential energy curves of a neutral and charged diatomic system. Results showed that GNOF effectively eliminates or improves the charge delocalization error in many studied systems, surpassing the previous results obtained with PNOF7.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Physics, Multidisciplinary
C. Medina, A. o Laegdsmand, L. Ben Ltaief, Z. Hoque, A. H. Roos, L. Jurkovicova, O. Hort, O. Finke, M. Albrecht, J. Nejdl, F. Stienkemeier, J. Andreasson, E. Klimesova, M. Krikunova, A. Heidenreich, M. Mudrich
Summary: We investigate the dynamics of avalanche ionization in pure helium nanodroplets activated by a weak extreme-ultraviolet (XUV) pulse and driven by an intense near-infrared (NIR) pulse. Short-term activation is caused by the injection of seed electrons into the droplets by XUV photoemission, while long-term activation is due to electrons remaining loosely bound to photoions, forming stable snowball structures in the droplets. These findings demonstrate that XUV irradiation can induce long-lasting changes in the optical properties of nanoparticles, potentially enabling control of avalanche-ionization phenomena in nanostructures and condensed-phase systems.
NEW JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Sunandita Paul, Hidetsugu Kitakado, Kensuke Suga, Ryota Kotani, Nilanjan Dey, Ravindra Venkatramani, Eduard Matito, Shohei Saito, Jyotishman Dasgupta
Summary: Fluorescent dyes synthesized by fusing COT with anthracene and phenazine wings exhibit a large Stokes shift, indicating significant conformational changes in their excited singlet states. Using broadband transient absorption spectroscopy and electronic structure calculations, we confirm intersystem crossing occurring in the planar COT conformation in these flapping dyes. We find that the planar conformation in the triplet state does not impart aromaticity to the COT backbone as previously predicted. This work provides the basis for designing COT-based functional molecules that can form triplets from excited singlet states.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Carmelo Naim, Raphael Vangheluwe, Isabelle Ledoux-Rak, Benoit Champagne, Claire Tonnele, Mireille Blanchard-Desce, Eduard Matito, Frederic Castet
Summary: The second-order nonlinear optical properties of four series of amphiphilic cationic chromophores have been investigated experimentally and theoretically. The theoretical methodology combining classical molecular dynamics and quantum chemical calculations provides a rational approach for designing SHG dyes based on EFISH measurements. The good agreement between experimental and theoretical results demonstrates the usefulness of this MD + QM scheme.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Slawomir J. Grabowski
Summary: Omega B97XD/aug-cc-pVDZ and Omega B97XD/aug-cc-pVTZ calculations were performed on complexes of imidazol-2-ylidene linked by halogen bonds. The properties of interactions in the complexes were analyzed using DFT calculations, QTAIM and NBO methods, as well as energy decomposition analysis. Most of the complexes were linked by medium and strong halogen bonds, often exhibiting characteristics of covalent bonds. Searches through the Cambridge Structural Database also found analogous structures to the theoretically analyzed complexes, which are discussed in this study.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Sebastian P. Sitkiewicz, Eduard Matito, Josep M. Luis, Robert Zalesny
Summary: In this study, the effect of spurious oscillations in energy derivatives calculated using density functional approximations (DFAs) for different molecules and states is investigated. It is found that these oscillations can only be removed by using extensive integration grids at the expense of increased computational cost. The errors in the derivatives significantly affect the anharmonic vibronic spectra, leading to shifts in the transition positions and intensities. LC-BLYP and CAM-B3LYP functionals show less pronounced effects compared to other functionals.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(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)