Article
Chemistry, Multidisciplinary
Shiqiang Zhao, Ze-Ying Deng, Shadiah Albalawi, Qingqing Wu, Lijue Chen, Hewei Zhang, Xin-Jing Zhao, Hao Hou, Songjun Hou, Gang Dong, Yang Yang, Jia Shi, Colin J. Lambert, Yuan-Zhi Tan, Wenjing Hong
Summary: This study fabricates sandwiched single-molecule bilayer-graphene junctions via vdW interactions and investigates their electrical transport properties. The results reveal the importance of the size, layer number, and angle between graphene flake and peripheral groups in determining the cross-plane charge transport through molecular graphene in these junctions.
Article
Multidisciplinary Sciences
Zhuang Yan, Xingxing Li, Yusen Li, Chuangcheng Jia, Na Xin, Peihui Li, Linan Meng, Miao Zhang, Long Chen, Jinlong Yang, Rongming Wang, Xuefeng Guo
Summary: In this study, we demonstrate two configurations of a graphene-porphyrin-graphene single-molecule junction (SMJ) driven by electric field and proton transfer. The transistor configuration shows exceptional field-effect performance with high on/off ratio and gate efficiency. The other configuration reveals controllable proton transfer and tautomerization switching. This work provides insights into constructing multifunctional molecular nanocircuits and understanding the intrinsic properties of matters at the molecular scale.
Article
Chemistry, Multidisciplinary
Yaorong Chen, Hua-Chun Wang, Yongxiang Tang, Yu Zhou, Longfeng Huang, Jian Cao, Chun Tang, Manxi Zhang, Jia Shi, Junyang Liu, Xiancheng Ren, Yun-Xiang Xu, Wenjing Hong
Summary: The presence of intramolecular hydrogen bonds promotes planarization of molecular structure, leading to higher conductance by reducing dihedral twisting. This offers a new strategy for controlling molecular switches through molecular twisting.
CHEMICAL COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Jinshi Li, Pingchuan Shen, Shijie Zhen, Chun Tang, Yiling Ye, Dahai Zhou, Wenjing Hong, Zujin Zhao, Ben Zhong Tang
Summary: Single-molecule potentiometers based on ortho-pentaphenylene derivatives exhibit a controllable conductance modulation through multiple folded conformers, achieving a significantly higher switching factor than previously reported values. The charge transport mechanism for these folded molecules is rationalized as a multichannel conductance governed by through-space and through-bond conducting pathways, shedding light on exploring robust single-molecule potentiometers based on helical structures.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Hector Vazquez
Summary: This method uses density functional theory to calculate the tunneling conductance of single molecule junctions, simplifying the model and reducing computational costs significantly, while also quantifying the relationship between molecular structure and conductance.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
D. Weckbecker, P. B. Coto, M. Thoss
Summary: This study investigates the potential of proton transfer reactions as a fundamental mechanism to realize a nanoscale molecular transistor. By controlling the location of protons in the molecular bridge and applying an electrostatic gate field, specific conductance states can be selected in molecule-graphene nanojunctions, allowing the current in the junction to be switched on and off like in a field-effect transistor. The underlying mechanism is analyzed in detail.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Haojie Liu, Hao Zhang, Yongjie Zhao, Junyang Liu, Wenjing Hong
Summary: In the past few decades, prototypes of single-molecule devices have emerged, leading to rapid development in the field of single-molecule electronics. Resolving the interface properties of single-molecule devices is crucial for their various practical applications. This review highlights the significance and urgency of interface resolving at single-molecule junctions (SMJs), summarizes the main progress in the construction, characterization, and modulation of SMJs, and discusses novel functionalization and critical challenges in fabricating reliable molecular devices. It provides a comprehensive understanding of interface resolving and offers novel insights into the design and fabrication of multifunctional molecular devices.
TRENDS IN CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ping Zhou, Yanjun Fu, Maolin Wang, Renhui Qiu, Yuwei Wang, J. Fraser Stoddart, Yuping Wang, Hongliang Chen
Summary: Supramolecular electronics use noncovalent interactions like π-π and hydrogen bonding to introduce molecular assemblies into electronic devices. This research demonstrates a strategy for building electronically robust switches using two different noncovalent interactions. By compressing the junction, the single-supermolecule switch is turned ON through π-π interactions dominating the transport. Stretching the junction to form hydrogen-bonded dimers turns the switch OFF, resulting in a dramatic decrease in conductance. The study shows the potential for designing robust bistable mechanoresponsive devices for integrated circuits in microelectromechanical systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Soran Jahangiri, Juan Miguel Arrazola, Alain Delgado
Summary: Accurate description of electron transport at a molecular level requires consideration of quantum effects, which play a crucial role in determining the electron transport properties of single molecules. A quantum algorithm has been introduced to efficiently calculate electronic current through single-molecule junctions in the weak-coupling regime, paving the way for building practical molecular electronic devices. The algorithm simulates vibronic transitions between different charge states of a molecule to compute electron-transfer rates and electronic current.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Review
Materials Science, Multidisciplinary
Huanyan Fu, Xin Zhu, Peihui Li, Mengmeng Li, Lan Yang, Chuancheng Jia, Xuefeng Guo
Summary: Single-molecule field-effect transistors (FETs) are crucial for future electronic circuits and serve as a unique platform for studying physical mechanisms at the single-molecule level. Designing single-molecule FETs involves focusing on functional molecule design, gate electrode construction, and control of molecule-electrode interface coupling. These FETs not only provide a foundation for practical applications, but also contribute to the exploration of physical laws.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Madhumita Saha, Bijay Kumar Agarwalla, Manas Kulkarni, Archak Purkayastha
Summary: In the presence of weak incoherent effects from surrounding environments, the low-temperature conductance of fermionic chains exhibits a counter-intuitive monotonic growth with system length near the band edges, indicating a superballistic scaling. This behavior can be expanded systematically by decreasing the coupling to the environments and reducing temperature. It is robust against weak disorder and slight shifts from the band edge, and stems from the interplay of incoherent effects and exceptional points of the transfer matrix.
Article
Multidisciplinary Sciences
Jeffrey R. Reimers, Tiexin Li, Andre P. Birve, Likun Yang, Albert C. Aragones, Thomas Fallon, Daniel S. Kosov, Nadim Darwish
Summary: Investigation of single-molecule piezoresistor and its reaction mechanism was conducted. The piezoresistance was characterized using scanning tunnelling microscopy break junction technique, and a kinetic Monte Carlo method was developed for simulation. Results indicate that the piezoresistance is controlled by both constitutional and conformational isomerisation.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Jeffrey R. Reimers, Tiexin Li, Andre P. Birve, Likun Yang, Albert C. Aragones, Thomas Fallon, Daniel S. Kosov, Nadim Darwish
Summary: This study presents a nanoscale electro-mechanical system (NEMS) piezoresistor based on a single molecule, which can change its shape through isomerisation and is observed using scanning tunnelling microscopy break junction techniques. The results provide insight into the control of piezoresistance and the dynamics of single-molecule reactions.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Hang Chen, Yaorong Chen, Hewei Zhang, Wenqiang Cao, Chao Fang, Yicheng Zhou, Zongyuan Xiao, Jia Shi, Wenbo Chen, Junyang Liu, Wenjing Hong
Summary: The study reveals that quantum interference effects can enhance the thermopower of molecular junctions and provide opportunities to manipulate charge transport properties.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Hongliang Chen, Vitor Brasiliense, Jingshan Mo, Long Zhang, Yang Jiao, Zhu Chen, Leighton O. Jones, Gen He, Qing-Hui Guo, Xiao-Yang Chen, Bo Song, George C. Schatz, J. Fraser Stoddart
Summary: This study introduces a new electrostatic anchoring strategy that forms robust gold-molecule-gold structures and demonstrates electron injection-induced redox switching in single-molecule junctions. These mechanisms could lay the foundation for a new class of redox-activated single-molecule switches.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Shen Zhou, Jiayue Yuan, Zi-Yu Wang, Kun Ling, Peng-Xiang Fu, Yu-Hui Fang, Ye-Xin Wang, Zheng Liu, Kyriakos Porfyrakis, G. Andrew D. Briggs, Song Gao, Shang-Da Jiang
Summary: The addressability of individual electron spin levels in endohedral nitrogen fullerenes has been achieved using molecular engineering and liquid-crystal-assisted methods. This allows for the coherent manipulation of electron spin levels and the implementation of quantum geometric phase manipulation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
James Q. Quach, Kirsty E. McGhee, Lucia Ganzer, Dominic M. Rouse, Brendon W. Lovett, Erik M. Gauger, Jonathan Keeling, Giulio Cerullo, David G. Lidzey, Tersilla Virgili
Summary: The rate at which matter emits or absorbs light can be changed by the environment. This study focuses on the phenomenon of superabsorption, which is harder to demonstrate due to the challenges of probing ultrafast processes. A paradigmatic model of a quantum battery, made of a microcavity enclosing a molecular dye, is implemented to observe charging dynamics and demonstrate superextensive charging rates and storage capacity. Decoherence is found to play a crucial role in stabilizing energy storage.
Article
Optics
Bienvenu Ndagano, Hugo Defienne, Dominic Branford, Yash D. Shah, Ashley Lyons, Niclas Westerberg, Erik M. Gauger, Daniele Faccio
Summary: In this study, a full-field, scan-free quantum imaging technique exploiting Hong-Ou-Mandel interference is developed to reconstruct the surface depth profile of transparent samples. The ability to retrieve images with micrometre-scale depth features is demonstrated even with a low photon flux.
Article
Physics, Multidisciplinary
Xinya Bian, Zhixin Chen, Jakub K. Sowa, Charalambos Evangeli, Bart Limburg, Jacob L. Swett, Jonathan Baugh, G. Andrew D. Briggs, Harry L. Anderson, Jan A. Mol, James O. Thomas
Summary: The outcome of electron-transfer processes is determined by the quantum-mechanical interplay between electronic and vibrational degrees of freedom. This study investigates electron transport through a porphyrin dimer molecule weakly coupled to graphene electrodes, revealing sequential tunneling initiated by current-induced phonon absorption and proceeding through rapid sequential transport via a nonequilibrium vibrational distribution.
PHYSICAL REVIEW LETTERS
(2022)
Review
Physics, Applied
Valentin Gebhart, Raffaele Santagati, Antonio Andrea Gentile, Erik M. Gauger, David Craig, Natalia Ares, Leonardo Banchi, Florian Marquardt, Luca Pezze, Cristian Bonato
Summary: Although the complexity of quantum systems increases exponentially with their size, classical algorithms and optimization strategies still play a crucial role in characterizing and detecting quantum states and dynamics. The future of quantum technologies relies on developing complex quantum systems for computation, simulation, and sensing, which poses challenges in control, calibration, and validation. This review explores classical post-processing techniques and adaptive optimization approaches to learn about quantum systems, their correlations, dynamics, and interaction with the environment, using various qubit architectures such as spin qubits, trapped ions, photonic and atomic systems, and superconducting circuits. It also highlights the importance of Bayesian formalism and neural networks.
NATURE REVIEWS PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Zhixin Chen, Jie-Ren Deng, Songjun Hou, Xinya Bian, Jacob L. Swett, Qingqing Wu, Jonathan Baugh, Lapo Bogani, G. Andrew D. Briggs, Jan A. Mol, Colin J. Lambert, Harry L. Anderson, James O. Thomas
Summary: Since the early days of quantum mechanics, it has been known that electrons have wave-particle duality. In this study, we demonstrate that electron transmission remains phase-coherent in molecular porphyrin nanoribbons connected to graphene electrodes. This opens up new avenues for studying quantum coherence in molecular electronic and spintronic devices.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Physics, Multidisciplinary
J. Wiercinski, E. M. Gauger, M. Cygorek
Summary: In this paper, the existence of weak dephasing mechanisms is confirmed by performing two-photon coincidence measurements on cooperatively emitting quantum dots. The impact of different decoherence mechanisms on the two-photon coincidence signals is investigated, and it is found that the strongly coupled phonon environment has a weak effect on coherence. This study provides a practical means of investigating decoherence processes in solid-state emitters.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Chemistry, Physical
Alexandre R. Coates, Brendon W. Lovett, Erik M. Gauger
Summary: Understanding energy transport is important for light-harvesting and quantum technologies. Open quantum systems theory predicts environmental noise-assisted quantum transport (ENAQT) in biological and artificial systems. Previous studies focused on canonical structures like chains, rings, and light-harvesting complexes, leading to assumptions about ENAQT. This paper shows that physically modeled transport networks can have at least two ENAQT peaks in their steady state transport efficiency.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Optics
Moritz Cygorek, Eleanor D. Scerri, Ted S. Santana, Zhe X. Koong, Brian D. Gerardot, Erik M. Gauger
Summary: Indistinguishable quantum emitters exhibit superradiance when confined to length scales smaller than the wavelength of the light. Recent experiments show that similar effects can also occur between emitters that are too far apart to be superradiant, if correlations are induced by measurement-induced cooperativity. This study compares the effects of superradiance and measurement-induced cooperativity on time-dependent optical signals, finding that a dip in photon coincidences at zero time delay is a signature of interemitter correlations but does not unambiguously prove the presence of superradiance.
Article
Physics, Multidisciplinary
Florian Vigneau, Juliette Monsel, Jorge Tabanera, Kushagra Aggarwal, Lea Bresque, Federico Fedele, Federico Cerisola, G. A. D. Briggs, Janet Anders, Juan M. R. Parrondo, Alexia Auffeves, Natalia Ares
Summary: The ultrastrong coupling between single-electron tunneling and nanomechanical motion provides exciting opportunities for exploring fundamental questions and developing new platforms for quantum technologies. We have measured and modeled this electromechanical coupling in a fully suspended carbon nanotube device and found a ratio of gm/omega m = 2.72 +/- 0.14, which is the highest among all other electromechanical platforms and well within the ultrastrong coupling regime.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Multidisciplinary Sciences
Emma Joy Dodson, Nicholas Werren, Yossi Paltiel, Erik M. M. Gauger, Nir Keren
Summary: In this study, energy transfer through subsets of PBS structures was modeled using a comprehensive dynamic Hamiltonian model. The simulations suggest that the PBS chromophore network enhances energy distribution over the entire PBS structure and that energy transfer is relatively immune to the effects of distances or rotations. Therefore, PBS provides unique advantages and flexibility to aquatic photosynthesis.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2022)
Article
Multidisciplinary Sciences
Charalambos Evangeli, Sumit Tewari, Jonathan Marcell Kruip, Xinya Bian, Jacob L. Swett, John Cully, James Thomas, G. Andrew D. Briggs, Jan A. Mol
Summary: Controlled electrobreakdown of graphene is important for various applications, and statistical analysis of the process provides insights into its behavior and characteristics under different conditions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Quantum Science & Technology
Scott Davidson, Felix A. Pollock, Erik Gauger
Summary: This study demonstrates the efficient elimination of radiative losses in systems with an intrinsic energy gradient. By adjusting the intra-unit-cell coupling, the system's eigenstates are partitioned into bright and dark subspaces, enabling efficient long-range transport through a dark chain of eigenstates. Additionally, appropriately aligned dipole moments provide additional protection against nonradiative loss processes.
Article
Quantum Science & Technology
Dominic Gribben, Dominic M. Rouse, Jake Iles-Smith, Aidan Strathearn, Henry Maguire, Peter Kirton, Ahsan Nazir, Erik M. Gauger, Brendon W. Lovett
Summary: In this study, a numerically exact and efficient technique called time-evolving matrix product operator (TEMPO) representation is proposed for dealing with quantum systems strongly coupled to multiple baths. The method is tested on a model system and demonstrates its capability of capturing nonadditive behavior.
Article
Materials Science, Multidisciplinary
Dominic M. Rouse, Erik M. Gauger, Brendon W. Lovett
Summary: In this paper, an intuitive analytic expression for the optical transition rates in the polaron frame is derived using a finite-mode truncation of the vibrational bath. The technique shows convergence of transition rates for only a few modes in the truncated spectral density and captures nonadditive effects.
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)
