Review
Biochemistry & Molecular Biology
Valentina Bonanni, Alessandra Gianoncelli
Summary: Scanning transmission X-ray microscopy (STXM) allows imaging of biological specimens and collection of localized spectroscopic information through X-ray fluorescence (XRF) and/or X-ray Absorption Near Edge Spectroscopy (XANES). Recent publications in synchrotrons have utilized soft X-ray spectro-microscopy in life science and environmental research to explore complex metabolic mechanisms by tracing chemical elements involved in metabolic pathways.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Analytical
Cafer Tufan Cakir, Tobias Piotrowiak, Uwe Reinholz, Alfred Ludwig, Franziska Emmerling, Christina Streli, Ana Guilherme Buzanich, Martin Radtke
Summary: In this study, the use of nondestructive, depth-resolved, element-specific characterization using grazing exit X-ray absorption near-edge structure spectroscopy (GE-XANES) is proposed to investigate the corrosion process in compositionally complex alloys (CCAs). The setup allows for scanning-free, nondestructive, depth-resolved analysis in a sub-micrometer depth range for layered materials. The findings demonstrate the potential of this approach for studying surface catalysis and corrosion processes in real-world materials.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Mayara da Silva Santos, Tony Stuker, Max Flach, Olesya S. Ablyasova, Martin Timm, Bernd von Issendorff, Konstantin Hirsch, Vicente Zamudio-Bayer, Sebastian Riedel, J. Tobias Lau
Summary: This study identified RhO3+ as the first chemical species containing rhodium in the +7 oxidation state, which is the third-highest oxidation state experimentally verified among all elements in the periodic table, through combined mass spectrometry, X-ray absorption spectroscopy, and quantum-chemical study.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Ian Byrnes, Lisa Magdalena Rossbach, Jakub Jaroszewicz, Daniel Grolimund, Dario Ferreira Sanchez, Miguel A. Gomez-Gonzalez, Gert Nuyts, Estela Reinoso-Maset, Koen Janssens, Brit Salbu, Dag Anders Brede, Ole Christian Lind
Summary: Micro- and nanoscopic X-ray techniques were used to investigate the relationship between uranium tissue distributions and adverse effects on the digestive tract of Daphnia magna. The study showed that exposure to uranium nanoparticles (UNPs) resulted in adverse morphological changes to the midgut and hepatic ceca, as well as abnormal intestinal epithelial cells. High-resolution nano-XRF identified U particulates throughout the midgut and within hepatic ceca cells, coinciding with tissue damages. These findings highlight the importance of disrupted intestinal function as a mode of acute U toxicity in D. magna.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
George E. Cutsail, Serena DeBeer
Summary: X-ray spectroscopy plays a significant role in catalysis research by providing essential electronic and geometric structural information. The development of dedicated synchrotron-based X-ray emission spectrometers has expanded experimental capabilities, offering more detailed data. There is a continuous demand for conventional XAS applications and the integration with more advanced techniques.
Article
Chemistry, Multidisciplinary
Daniel Baranowski, Iulia Cojocariu, Alessandro Sala, Cristina Africh, Giovanni Comelli, Luca Schio, Massimo Tormen, Luca Floreano, Vitaliy Feyer, Claus M. Schneider
Summary: On-surface chemistry allows for the miniaturization of functional devices, with porphyrins being promising building blocks for exploring advanced nanoarchitecture. Covalently connecting molecular units can result in more stable molecular materials with improved charge transfer properties. The synthesis and properties of a covalent molecular network composed of interconnected constituents derived from halogenated nickel tetraphenylporphyrin on Au(111) are addressed in this study. The pi-extended two-dimensional material exhibits dispersive electronic features, while the functional Ni cores retain their single-active site character. The high robustness of transition metal cores provided by bottom-up constructed covalent nanomeshes opens up new possibilities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Biochemistry & Molecular Biology
James H. Lovett, Hugh H. Harris
Summary: X-ray absorption spectroscopy and X-ray fluorescence microscopy are nondestructive techniques that require minimal sample manipulation, often used to investigate the fate of metallodrugs in physiological samples. These methods are advantageous in studying metallodrug localization and speciation.
CURRENT OPINION IN CHEMICAL BIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yuting Li, Yu Tang, Franklin (Feng) Tao
Summary: This article reports a new supported catalyst, Rh-1/P25, consisting of singly dispersed Rh-1 atoms anchored on TiO2 (P25) nanoparticles. The Rh-1/P25 catalyst exhibits high activity for C-N coupling and demonstrates selectivity of higher than 90% for producing tertiary amines in six hydroaminoalkylation reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Alexei Kuzmin, Milena Dile, Katrina Laganovska, Aleksejs Zolotarjovs
Summary: Undoped and Mn-doped ZnS nanocrystals were synthesized and characterized. The substitution of Mn ions for Zn ions in ZnS nanocrystals led to changes in lattice parameters and interatomic distances. Photoluminescence spectroscopy showed a shift in emission peak due to Mn doping in ZnS nanocrystals.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Multidisciplinary Sciences
Allan S. Johnson, Jordi Valls Conesa, Luciana Vidas, Daniel Perez-Salinas, Christian M. Gunther, Bastian Pfau, Kent A. Hallman, Richard F. Haglund, Stefan Eisebitt, Simon Wall
Summary: Solid-state systems can host a variety of thermodynamic phases that are challenging to study on the nanoscale due to the coexistence of multiple phases. Coherent diffractive imaging spectroscopy (CDIS) enables nanometer-scale resolution hyperspectral imaging of vanadium oxide, extracting refractive indices of different phases from a single sample without evidence of correlation-driven phase transitions. CDIS allows quantitative full-field x-ray spectromicroscopy for studying phase separation in extreme sample environments.
Article
Nanoscience & Nanotechnology
Zhaohui Wu, Seong-Min Bak, Zulipiya Shadike, Sicen Yu, Enyuan Hu, Xing Xing, Yonghua Du, Xiao-Qing Yang, Haodong Liu, Ping Liu
Summary: The study demonstrates the crucial role of LiNO3 additive in preventing LiSx species from dissolving into the electrolyte, thereby reducing shuttle effect and capacity loss. Carbonate electrolyte forms porous dendritic Li morphology on Li anode, while ether-based electrolyte forms dense spherical Li morphology, proving that ether-based electrolyte with LiNO3 is the preferred choice for stable cycling.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yuan Jing, Koichiro Taketoshi, Ningqiang Zhang, Chenxi He, Takashi Toyao, Zen Maeno, Teppei Ohori, Naoya Ishikawa, Ken-ichi Shimizu
Summary: In this study, a RhOx/ZrO2 catalyst was identified as the optimal catalyst for N2O decomposition at a relatively low temperature. The loading amount of Rh species significantly affects the efficiency of N2O decomposition, with the optimal loading being 10%. RhOx species in relatively large particles serve as more effective catalytically active sites.
Article
Chemistry, Physical
Weifeng Huang, Jianxin Kang, Tingwen Chen, Dawei Pang, Lihua Wang, Hang Wei, Changchun Yang, Dongfeng Zhang, Lin Guo
Summary: Nickel based magnetic nanocrystals have wide applications in magnetic and catalytic fields. Tunable magnetic properties of nickel can be achieved through non-magnetic doping or phase transformation. This study presents a way to control the magnetism of Au@Ni-carbide magnetic materials by adjusting the amount of carbon in the Ni layer, and provides solid evidence for the carbonation process from fcc-Ni to Ni X C instead of phase transformation to hcp-Ni. Further investigation reveals that the magnetism of the hybrids is mainly contributed from the residual fcc-Ni.
Article
Chemistry, Physical
Bura Sindhupakorn, Pinit Kidkhunthod
Summary: This study examined structural changes in subchondral bone samples from osteoarthritic knee patients compared to controlled patients, using Synchrotron-based X-ray fluorescence and X-ray absorption spectroscopy techniques. The results revealed lower phosphorus content in older OA patients, leading to lower Ca-P proportions associated with osteoporosis. The majority of bone samples exhibited an amorphous structure of calcium-phosphate.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Review
Chemistry, Physical
Francisco Zaera
Summary: Catalysis in industrial chemical processes has long been studied through various spectroscopic techniques like vibrational and X-ray spectroscopies, allowing for a molecular-level understanding of catalytic mechanisms. These techniques help researchers explore the intricate details of catalytic processes and advancements in the field.
JOURNAL OF CATALYSIS
(2021)
Article
Optics
Iksung Kang, Ziling Wu, Yi Jiang, Yudong Yao, Junjing Deng, Jeffrey Klug, Stefan Vogt, George Barbastathis
Summary: Noninvasive X-ray imaging of nanoscale objects, such as integrated circuits, requires scanning methods like ptychography and tomography. In this study, Attentional Ptycho-Tomography (APT) is proposed as a machine learning-based approach to reduce scanning time and provide accurate reconstructions. Experimental results demonstrate that APT can significantly reduce data acquisition and computation time from 67.96 hours to 38 minutes while maintaining quality. This physics-assisted and attention-utilizing machine learning framework is expected to find applications in other branches of nanoscale imaging, including materials science and biological imaging.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Shailendra K. Sharma, Bernt Johannessen, Vladimir B. Golovko, Aaron T. Marshall
Summary: The structures and properties of [Au-6(dppp)(4)](NO3)(2), [Au-9(PPh3)(8)](NO3)(3), [Au-13(dppe)(5)Cl-2]Cl-3, and Au-101(PPPh3)(21)Cl-5 clusters were studied using X-ray absorption spectroscopy (XAS), and compared to bulk gold. The clusters showed distinct features. This study advances the understanding of phosphine-ligated metal clusters relevant to practical applications in catalysis and sensing.
Article
Chemistry, Multidisciplinary
Kateryna Kostenkova, Aviva Levina, Drew A. Walters, Heide A. Murakami, Peter A. Lay, Debbie C. Crans
Summary: Two new series of complexes with pyridine-containing Schiff bases were synthesized and their chemical properties and stability were studied. One of the complexes exhibited good anti-proliferative activity in cell culture media, showing high selectivity towards glioblastoma cells and potential for drug treatment.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Serene Kuramarohit, Andria M. Yaourtis, Annie Nguyen, Michelle L. Wood, Aviva Levina, Peter A. Lay
Summary: Using IncuCyte Zoom imaging proliferation assays, it was observed that treatment with sub-toxic doses of [GaQ(3)] caused morphological changes and inhibition of cell migration in triple-negative human breast cancer cells. The addition of a trace amount of Cu(II) dramatically increased the cytotoxicity of [GaQ(3)]. The findings suggest the potential use of metal complexes in cancer therapy and the importance of ligand binding of essential metal ions for their cytotoxicity.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Multidisciplinary Sciences
Yuguang Pu, Duncan Moseley, Zhen He, Krishna Chaitanya Pitike, Michael E. Manley, Jiaqiang Yan, Valentino R. Cooper, Valerie Mitchell, Vanessa K. Peterson, Bernt Johannessen, Raphael P. Hermann, Peng Cao
Summary: Researchers have developed a bottom-up method for synthesizing rocksalt high-entropy oxides (HEOs) containing Mn and Fe. They investigated the crystal structure and random cation-site occupancy of FeO-HEO, showing improved structural robustness and the viability of an oxygen sublattice as a buffer layer. Compositional analysis revealed the valence and spin state of the iron species, and the antiferromagnetic order of FeO-HEO below a transition temperature around 218 K was reported, along with predictions for the phase stability conditions of Mn and Fe-containing HEOs.
Article
Chemistry, Physical
Matthew Teusner, Uttam Mittal, Martina Lessio, Bernt Johannessen, Jitendra Mata, Neeraj Sharma
Summary: We report the use of copper tartrate, an inexpensive and off-the-shelf metal-carboxylate, as a high-capacity anode material for lithium-ion batteries, achieving a specific capacity of 744 mA h g(-1) when cycled at 50 mA g(-1). Advanced techniques, including XAS, XRD, SANS, and USANS, were used to investigate the structure-performance relationship of the electrode and uncover an unusual capacity gain with cycling.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Matthew Teusner, Jitendra Mata, Bernt Johannessen, Glen Stewart, Sean Cadogan, Neeraj Sharma
Summary: Holistic investigations into battery electrode mechanisms are crucial for developing competitive and sustainable battery materials. This study used metal-dicarboxylate metal-organic frameworks as anode materials, which showed improved performance with adjustable nano and microstructures. The dissolution of active materials was found to be greater in water-based slurries, leading to better distribution and dispersion and increased specific capacity. This formulation approach also allows for the replacement of toxic materials with environmentally friendly alternatives.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Kartika Wardhani, Aviva Levina, Biyun Sun, Georges E. R. Grau, F. Richard Keene, J. Grant Collins, Peter A. Lay
Summary: Using a new photoluminescent polypyridylruthenium(II) stain, researchers have uncovered previously unknown interactions between extracellular vesicles (EVs) released from lipopolysaccharide-stimulated THP-1 monocytes and the blood-brain barrier (BBB). These findings shed light on the impact of bacteria-induced immune response on BBB and provide insights into human brain diseases.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Liam J. J. Stephens, Elena Dallerba, Jenisi T. A. Kelderman, Aviva Levina, Melissa V. V. Werrett, Peter A. A. Lay, Massimiliano Massi, Philip C. C. Andrews
Summary: This study synthesized and characterized twelve Re(i) tricarbonyl diimine complexes with thiotetrazolato ligands. The tetrazolato ligand can bind to the Re(i) center through either the S atom or the N atom, with most complexes being bound to the N atom. In solution, the complexes exist as an equilibrating mixture of linkage isomers. The complexes exhibit photoluminescent properties, with emission wavelengths dependent on the nature of the diimine ligand.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Serene Kuramarohit, Andria M. Yaourtis, Annie Nguyen, Michelle L. Wood, Aviva Levina, Peter A. Lay
Summary: This study demonstrates the potential use of a metal complex, GaQ(3), in differentiation anti-cancer therapy. It also shows that the cytotoxicity of GaQ(3) is strongly linked to the binding of essential metal ions, such as Cu(II), in the medium. These findings suggest that appropriate delivery mechanisms of such complexes and their ligands could lead to a powerful new approach for cancer chemotherapy.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Electrochemistry
Libei Yuan, Junnan Hao, Bernt Johannessen, Chao Ye, Fuhua Yang, Chao Wu, Shi-Xue Dou, Hua-Kun Liu, Shi-Zhang Qiao
Summary: In this study, a boron nitride (BN)/Nafion layer is reported on the surface of zinc, which efficiently addresses the issues of zinc dendrite growth and water-related side reactions by combining the working mechanisms of solid/electrolyte interphase (SEI) and nucleation layers. The protective layer provides a dendrite-free and side-reaction-free zinc electrode with a preferred deposition orientation. The zinc electrode with the protective layer exhibits high reversibility and excellent performance in full cells.