Article
Materials Science, Multidisciplinary
Nikita V. Muravyev, Igor N. Melnikov, Dmitry K. Pronkin, Dmitry L. Lipilin, Kyrill Yu. Suponitsky, Aleksei B. Sheremetev, Igor L. Dalinger
Summary: This article reports a high-energy mesoionic liquid, 3-methylazasydnone, that can function as both a monopropellant and in bipropellant systems. It has high density, moderate volatility, good thermal stability, and is insensitive to impact. The computed combustion performance of the liquid propellant is superior to a benchmark energetic ionic liquid. Overall, 3-methylazasydnone is a promising functional material for green liquid mono- and bipropellants.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xia Zhao, Zhi Wang, Xiujuan Qi, Siwei Song, Shi Huang, Kangcai Wang, Qinghua Zhang
Summary: Six new energetic complexes with good thermal stabilities and excellent specific impulses were synthesized and characterized in this study. They exhibited great potential as promoters for the development of green hypergolic bipropellants, showing high catalytic activity and short ignition delay time in hypergolic reactions. Their isostructural characteristics also made them ideal candidates for studying structure-performance relationships.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Inorganic & Nuclear
Victor M. Chernyshev, Oleg Khazipov, Dmitry B. Eremin, Ekaterina A. Denisova, Valentine P. Ananikov
Summary: This review discusses the formation pathways of Pd nanoparticles and clusters in catalytic systems, as well as the mechanisms of stabilizing these nanoparticles using ionic nitrogen compounds. Ionic nitrogen compounds have various effects on catalytic processes, including potentially participating in catalytic cycles and influencing unwanted side reactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Hong-Yi Bian, Yun-Fan Yan, Meng Cui, Tian-Tian Song, Xiao-Di Guo, Jian-Gang Xu, Fa-Kun Zheng, Guo-Cong Guo
Summary: The design and development of advanced hypergolic metal-organic frameworks (HMOFs) for space exploration have attracted attention. This study successfully introduced high energy anions to construct isostructural HMOFs with spontaneous combustion properties and high volumetric energy density. The introduction of high energy anions significantly increased the energy densities of the HMOFs and they can serve as candidates for bipropellants with enhanced properties.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Rizwan Ashraf, Zohra Khalid, Ayesha Sarfraz, Haq Nawaz Bhatti, Muhammad Adnan Iqbal, Mansoureh Nazari
Summary: Four new selenium-N-Heterocyclic Carbene adducts were synthesized from molten salts and analyzed through various techniques to confirm their structure and stability. These compounds showed promising anticancer potential with high activity in vitro cytotoxicity studies, low toxicity in interaction with proteins and hemolysis assay.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Thermodynamics
Changgeng Sun, Shaokun Tang
Summary: This paper investigates the effects of four guanidinium di an de-based ene c salts as energetic additives to a hypergolic ionic fluid. The salts were found to significantly improve the density and specific impulse of the fluid.
COMBUSTION AND FLAME
(2021)
Article
Chemistry, Multidisciplinary
Alexander V. Shaferov, Sergey T. Arakelov, Fedor E. Teslenko, Alla N. Pivkina, Nikita V. Muravyev, Leonid L. Fershtat
Summary: Liquid energetic fuels with improved properties, synthesized in this study, were evaluated for their physicochemical properties. The results showed that the synthesized compounds had good thermal stabilities and experimental densities. Particularly, the 1,2,5-oxadiazole-based ionic liquids exhibited high combined nitrogen-oxygen contents, detonation velocities comparable to TNT, and better combustion performance than the benchmark compound 2-hydroxyethylhydrazinium nitrate. Due to their hypergolicity with H2O2 in the presence of a catalyst and insensitivity to impact, these synthesized ionic liquids have great application potential for space technologies.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yuval Zertal, Matthew Yong, Avishai Levi, Sagi Sevilia, Alex Tsoglin, Galit Parvari, Levi Gottlieb, Yoav Eichen
Summary: Polymers made of energetic ionic liquid building blocks are used as fuel-binder part in propellant compositions, exhibiting desired mechanical and energetic properties. Utilizing specific monomers and oxidizer, along with photo polymerization ability, allows for control over product properties and reduced content of heterogeneous oxidizer. Additionally, the importance of intermolecular interaction and achievement of pressure independent burn rates were identified in this study.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Xinjuan Li, Zhangquan Zhou, Jiaxin Dong, Yanping Sun, Guanglei Ma, Qingcong Wei, Nana Ma, Xianbin Jia
Summary: Constructing helical structures using achiral polymers is challenging. In this study, temperature sensitive polyionic liquids were used to assemble into a helical porous polymer network with the assistance of a crosslinking agent. The resulting composite catalysts exhibited high stability and catalytic activity, enabling efficient catalysis in aqueous environments.
Article
Thermodynamics
Ping Wang, Bingyu Fan, Yiyang Zhou, Tian Cao, Pei Xu, Jin Liu, Ali Bahader, Xianbiao Wang, Yunsheng Ding
Summary: The study has shown that 1,2,3-triazolium-functionalized PCL-b-PEG(IL) has a significant impact on the crystallization behavior of PLA, enhancing chain segment mobility and crystallization ability, thereby inducing a high amount of stable alpha-form crystal of PLA after annealing treatment.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Multidisciplinary Sciences
Takeshi Kobayashi, Jens Smiatek, Maria Fyta
Summary: The study investigates the influence of DMSO and water on the microscopic arrangement of ions in ionic liquid mixtures. It shows that increasing concentrations of DMSO repel solute molecules from ions, while water concentrations cause solute molecules to accumulate closer to ions. These differences are attributed to the weakening of ion interactions by water molecules and the strengthening of interactions by DMSO.
ADVANCED THEORY AND SIMULATIONS
(2021)
Article
Chemistry, Multidisciplinary
Yuval Simha, Gil Daniels, Amalya Goldman, Elihay Kuniavsky, Dmitry Tsvelikhovsky
Summary: A new strategy for direct access to fully substituted polycyclic imidazolium salts using alpha-enaminones and proline as the reagents is reported. This open-flask operation is a catalyst-, metal-, and Lewis acid-free green process, which does not require an ion-exchange step. It can produce good yields with minimal formation of side products, and is not limited to aryl substituents.
Article
Chemistry, Physical
E. G. Blanco-Diaz, G. Gonzalez-Alatorre, F. J. Lona-Ramirez, E. O. Castrejon-Gonzalez
Summary: The study utilized Molecular Dynamics simulations to investigate the impact of chain lengths on [C(n)mim][TF2N] ionic liquids. It was found that density and self-diffusion coefficient decrease with longer chain lengths, while viscosity values at zero-shear-rate increase. The static structure factor suggests anisotropy in systems with different carbon atom numbers, indicating varying system characteristics.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Sensen Shi, Yuanmeng Duan, Guoxiong Zhan, Fei Chang, Shaojuan Zeng, Xiaoyan Ji, Zhichang Liu, Xianghai Meng, Xiangping Zhang
Summary: This study proposes an IL-based ammonia synthesis loop that separates and recovers NH3 from recycle gas using ionic liquids as solvents, aiming to reduce energy consumption and increase NH3 production capacity. A systematic methodology considering thermodynamic models, process simulation, and assessment is established to evaluate the feasibility of the IL-HB. The simulation results demonstrate significant techno-economic potentials of the IL-HB, with reduced energy consumption and CO2 emissions compared to the conventional Haber-Bosch process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
I. Isaac Sam, S. Gayathri, G. Santhosh, Jobin Cyriac, S. Reshmi
Summary: Energetic ionic liquids (EILs) are being researched as high-energy fuels that can be used as bipropellant fuels along with green and non-toxic oxidizers like hydrogen peroxide. Caged ionic liquids, such as azoles and boranes, are used to enhance the performance of the propellant systems. Hydrogen peroxide is a promising candidate for replacing toxic oxidizers. The combination of EILs and hydrogen peroxide can be used in the multimode propulsion of small satellites.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Neng Hu, Lei Shi, Shangchao Ji, Weijia Wang, Lin Lei, Huiqing Fan, Peter Mueller-Buschbaum, Qi Zhong
Summary: An adhesive and visualized hydrogel-based detector is designed to monitor the solar radiation dose required for plant growth by the discoloration of methylene blue (MB) under sunshine. The hybrid hydrogels prepared from photoinitiated polymerization on the graphitic carbon nitride (g-C3N4) surface and polypropylene (PP) fabrics as a substrate enable better photodegradation capability and improved mechanical properties of the hydrogel-based detector. By pasting the detector on the leaf of a plant, the radiation dose can be accurately traced from the change in color to ensure sufficient radiation for plant growth and avoid burn to the leaves under sunlight.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Polymer Science
Julija Reitenbach, Christina Geiger, Peixi Wang, Apostolos Vagias, Robert Cubitt, Dirk Schanzenbach, Andre Laschewsky, Christine M. Papadakis, Peter Mueller-Buschbaum
Summary: The swelling behavior of PNIPMAM thin films containing magnesium salts in water vapor is investigated for their potential applications as nanodevices. In situ time-of-flight neutron reflectometry is used to probe the extent and kinetics of the swelling ratio and water content. In situ Fourier-transform infrared (FTIR) spectroscopy and two-dimensional FTIR correlation analysis are utilized to study the solvation events and enhance the sensitivity of PNIPMAM thin films. The addition of Mg(ClO4)2 or Mg(NO3)2 results in higher water uptake and thickness gain in the swollen state, with Mg(NO3)2 showing the highest relative water uptake.
Article
Instruments & Instrumentation
F. Voegl, L. Balacescu, O. Holderer, S. Pasini, S. Staringer, G. Brandl, V. Ossovyi, H. Feilbach, P. Mueller-Buschbaum, A. M. Stadler, J. Fitter, T. E. Schrader
Summary: A new sample environment called Bio-Oven has been developed for the Neutron Spin Echo (NSE) Spectrometer J-NSE Phoenix, allowing active temperature control and the capability to perform Dynamic Light Scattering (DLS) measurements along with neutron measurements. The Bio-Oven utilizes optical fibers to decouple the free space optics from the laser sources and detectors, enabling simultaneous collection of light from three scattering angles. Test experiments with silica nanoparticles and apomyoglobin protein sample demonstrated the effectiveness of in situ DLS in monitoring the aggregation state during neutron measurements.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Chemistry, Physical
Pan Ding, Hongyu An, Philipp Zellner, Tianfu Guan, Jianyong Gao, Peter Mueller-Buschbaum, Bert M. Weckhuysen, Ward van der Stam, Ian D. Sharp
Summary: This study investigates the impact of catalyst ink formulation on CO2 electrolysis and finds that Nafion is essential for achieving stable product distributions. The content of Nafion and the solvent composition regulate the internal structure of Nafion coatings and the catalyst morphology, thus significantly impacting CO2 electrolysis performance.
Article
Chemistry, Multidisciplinary
Lucas Stieglitz, Christina Geiger, Paula F. F. Grossmann, Moritz Kraenzlein, Katia Rodewald, Peter Mueller-Buschbaum, Bernhard Rieger
Summary: This work presents the fiber spinning of tailored isotactic polypropylene (iPP) by melt spinning and melt drawing, obtaining fibers with an adjustable diameter of 40-400 µm. The crystallinity of the fibers is increased through thermal annealing and analyzed using differential scanning calorimetry (DSC) and wide angle X-ray scattering (WAXS). Comparing the mechanical performance, ultra-high molecular weight iPP (UHMW-iPP) fibers exhibit superior tensile strength (up to 400 MPa) compared to commercially available fibers (approximately 50 MPa). However, UHMW-iPP has a limited timeframe for extrusion, after which extrusion rupture occurs likely due to increased melt viscosity.
Review
Energy & Fuels
Kun Sun, Peter Mueller-Buschbaum
Summary: This article reviews the effects of moisture on halide perovskite films, including the degradation mechanism and methods to enhance stability. The benefits of incorporating a certain amount of water into perovskite films are discussed, as well as the moisture-induced structural degradation and decomposition process. The methods to enhance moisture stability, particularly 3D/2D heterostructures, are also highlighted.
Article
Nanoscience & Nanotechnology
Anna Lena Oechsle, Tobias Schoener, Lewin Deville, Tianxiao Xiao, Ting Tian, Apostolos Vagias, Sigrid Bernstorff, Peter Mueller-Buschbaum
Summary: The influence of humidity on the resistance properties of post-treated PEDOT:PSS films was investigated. It was found that elevated humidity increased the resistance of reference samples without post-treatment, while the post-treated samples showed a reverse behavior. Morphological changes in the film, such as increased PEDOT domain distances, were observed with in situ GISAXS measurements. This led to a deterioration in interdomain hole transport and a rise in resistance. Additionally, EIS measurements revealed additional contributions of ionic charge carriers in the post-treated PEDOT:PSS films.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Zheng Fang, Huawei Xu, Qiang Xu, LiuBang Meng, Nan Lu, Renhong Li, Peter Mueller-Buschbaum, Qi Zhong
Summary: Inspired by the transpiration in tree stem, a multi-scale micro-nano channel structure was formed by directional freezing, redox polymerization, and nanoparticles-induced porosity in a hybrid P(AAm/DA)-Ag/MgO hydrogel coating cross-linked on microfiber-based polyurethane. This structure significantly increased the specific surface area and enabled efficient formaldehyde removal by the hydrogels and degradation by the Ag/MgO nanoparticles. The cross-linked hybrid hydrogel coating on polyurethane also demonstrated good anti-bacterial capability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Chia-Hsin Ko, Cristiane Henschel, Geethu P. Meledam, Martin A. Schroer, Renjun Guo, Peter Mueller-Buschbaum, Andre Laschewsky, Christine M. Papadakis
Summary: This study reveals that the micellar structures of PMMA-b-PNIPAM diblock copolymers in aqueous solution can be controlled by varying the content of methanol. The methanol content strongly influences the size, aggregation number, shell thickness, and interactions of the micelles.
Article
Chemistry, Physical
Frank Hartmann, Martin Bitsch, Bart-Jan Niebuur, Marcus Koch, Tobias Kraus, Christian Dietz, Robert W. Stark, Christopher R. Everett, Peter Mueller-Buschbaum, Oliver Janka, Markus Gallei
Summary: This study synthesized a high-molecular-weight polystyrene-b-poly(methyl methacrylate) block copolymer as a soft matrix to fabricate nanocomposites containing magnetic nanoparticles. The influence of different ratios of PMMA-coated FePt nanoparticles on the self-assembled morphology was investigated. Statistical analysis revealed that the particles mainly self-assembled inside the PMMA phase at low particle concentrations, while higher particle ratios had a negative effect on the morphology. The magnetic addressability of the nanoparticles inside the nanocomposite films was confirmed using bimodal magnetic force microscopy.
Article
Chemistry, Multidisciplinary
Ruijie Ma, Xinyu Jiang, Jiehao Fu, Tao Zhu, Cenqi Yan, Kexin Wu, Peter Mueller-Buschbaum, Gang Li
Summary: The morphological features and film formation processes of high-performance donor-acceptor binary photovoltaic blends using three representative solvents are investigated. It is found that the solvent used has a significant effect on the efficiency of the PM6:L8-BO system, while the PM6:eC9 system is less influenced by the solvent. The in situ and ex situ studies reveal the reasons behind the observed differences and provide insights into the optimization of organic solar cells.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Ming Yang, Peng Chen, Jiapei Li, Ruoxuan Qi, Yudai Huang, Peter Mueller-Buschbaum, Ya-Jun Cheng, Kunkun Guo, Yonggao Xia
Summary: Silicon oxide (SiOx) is a promising anode material for high-energy lithium-ion batteries (LIBs) due to its abundant reserves, facile synthesis, and high theoretical capacity. However, its practical use is limited by poor cycling stability caused by volume change during lithiation/delithiation. The use of a waterborne poly(acrylic acid) (PAA) binder enriched with an organic solvent (DMF) improves the performance of SiOx-based anodes in terms of capacity retention and rate capacity, enabling its practical application in both half-cell and full-cell configurations.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Biochemistry & Molecular Biology
Mirjam Hofmaier, Julian E. Heger, Sarah Lentz, Simona Schwarz, Peter Mueller-Buschbaum, Thomas Scheibel, Andreas Fery, Martin Mueller
Summary: This study investigated the influence of the variation in the number of repeating sequence motives on protein folding within eADF4(Cx) films. The results provided new insights into the structure formation and film properties of intrinsically disordered protein systems.
Article
Engineering, Environmental
Suo Tu, Ting Tian, Apostolos Vagias, Linus F. Huber, Liangzhen Liu, Suzhe Liang, Roland A. Fischer, Sigrid Bernstorff, Peter Mueller-Buschbaum
Summary: This study achieves highly tailorable conduction of PEDOT:PSS by regulating the electronic and ionic contribution using additive engineering. By investigating the charge transport mechanisms and their correlations with morphological alterations, the conductivity evolution of the materials under different humidity conditions is revealed.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Anna Lena Oechsle, Tobias Schoener, Christina Geiger, Suo Tu, Peixi Wang, Robert Cubitt, Peter Mueller-Buschbaum
Summary: The conductivity properties of the conductive polymer blend PEDOT:PSS are investigated under the influences of ionic liquid treatment and ambient humidity. The results show that the ionic conductivity of the IL-treated PEDOT:PSS films is enhanced by the intake of water molecules, while the electronic conductivity of all PEDOT:PSS films decreases with increasing humidity.
