Article
Chemistry, Inorganic & Nuclear
Alice C. Phung, James C. Fettinger, Philip P. Power
Summary: A series of ferriostannylenes with different iron and/or tin substituents were synthesized and their structures and spectroscopic properties were investigated. The results showed that the substituents have significant effects on the structure and properties of the compounds.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
A. Dolgikh, D. Afanasiev, V. V. Yurlov, M. V. Logunov, A. K. Zvezdin, A. V. Kimel
Summary: Ultrafast laser-induced heating of ferrimagnetic iron garnet in an external magnetic field leads to large amplitude magnetization precessional dynamics. Through experimental and computational exploration of the three-dimensional parameter space of magnetic field, laser fluence, and sample temperature, we have identified the conditions for achieving the largest precession amplitude, even sufficient for magnetic recording. The range of external magnetic fields and temperatures for magnetic recording is found to be narrow, determined by the optimal height of the potential barrier between stable states.
Article
Chemistry, Inorganic & Nuclear
Khawla Azaiez, Rabia Benabderrahmane Zaghouani, Mahmoud Daoudi, Mosbah Amlouk, Wissem Dimassi
Summary: This study focuses on the impact of Bismuth solution treatment on the optical properties of p-type porous silicon. By incorporating Bi layers of variable thickness in porous silicon, the photoluminescence property in the visible region has been improved. This finding could be significant for various optoelectronic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Daniel Duvinage, Marvin Janssen, Enno Lork, Hansjoerg Gruetzmacher, Stefan Mebs, Jens Beckmann
Summary: By employing bulky m-terphenyl substituents for kinetic stabilization, the isolation of diarylantimony and diarylbismuth phosphaethynolates was achieved. The structures of these compounds were fully characterized crystallographically and spectroscopically, and further analyzed using DFT methods.
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2022)
Article
Chemistry, Physical
Peng Chen, Tao Du, He Jia, Lifeng Zhou, Qiang Yue, Heming Wang, Yisong Wang
Summary: A novel Bi2WO6/Si heterostructure photocatalyst was developed in this study, which showed a shift of the Fermi level to the valence band, effectively reducing the difficulty of electron holes generation. The photocatalysts with special branch structure achieved an increased surface area and the ability to absorb visible light. The presence of heterojunction enhanced the separation of photo-excited electron-hole pairs and prolonged the electron lifetime, resulting in efficient reduction of CO2.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Multidisciplinary
Yuhui Li, Ajay Annamareddy, Dane Morgan, Zheng Yu, Bu Wang, Chengrong Cao, John H. Perepezko, M. D. Ediger, Paul M. Voyles, Lian Yu
Summary: The speed difference between surface diffusion and bulk diffusion in glasses is closely related to the bulk fragility of the glasses. Stronger liquids exhibit greater resistance to dynamic excitation from bulk to surface, impacting the prediction of surface diffusion, surface crystallization, and the formation of stable glasses by vapor deposition.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Applied
Hamed Nosrati, Marziyeh Salehiabar, Faezeh Mozafari, Jalil Charmi, Nuri Erdogan, Mohammadreza Ghaffarlou, Fatemeh Abhari, Hossein Danafar, Ali Ramazani, Yavuz Nuri Ertas
Summary: Early diagnosis and treatment of cancer is crucial, and theranostic systems play a significant role in this aspect. In this study, bi-functional nanoparticles were developed as dual MRI/CT contrast agent and carrier of natural anticancer drug. These nanoparticles showed good performance in both MRI and CT imaging contrast, while also demonstrating high biocompatibility and anticancer activity.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Paolo Inaudi, Ornella Abollino, Monica Argenziano, Mery Malandrino, Caterina Guiot, Stefano Bertinetti, Laura Favilli, Agnese Giacomino
Summary: This study evaluated the applicability of voltammetry for the on-site determination and speciation of iron. The Square Wave Adsoptive Cathodic Stripping Voltammetry (SW-AdCSV) technique with a modified glassy carbon electrode (GCE) was used for the determination of iron (III) in synthetic solutions and a Standard Reference Material (SRM). The method was then applied to real water samples and compared with Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES). The results demonstrated the excellent applicability of the proposed on-site voltammetric procedure for the determination of iron and its speciation in water.
Article
Engineering, Marine
Xueping Hu, Haitao Han, Chenchen Wang, Xingliang Song
Summary: This study analyzed the fractionation of iron in main coastal rivers to Yantai Sishili Bay using an electrochemical sensor based on bismuth microrods. The results showed that particulate iron (PFe) was the main fraction of iron in the rivers, accounting for a high percentage in each. Relationships between iron concentration and factors such as tidal action, salinity, and dissolved oxygen were also investigated.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Thipwan Fangsuwannarak, Supanut Laohawiroj, Peerawoot Rattanawichai, Kamonchanok Mekmork, Warakorn Limsiri, Rungrueang Phatthanakun
Summary: In this study, silicon ink was formulated and applied to third-generation photovoltaic cells to enhance blue-light absorption efficiency. By adjusting the density of silicon dots, the energy bandgaps of thin films could be controlled, resulting in a high photocurrent gain effect.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
A. N. Mihalyuk, Y. E. Vekovshinin, L. V. Bondarenko, A. Y. Tupchaya, T. V. Utas, D. V. Gruznev, S. V. Eremeev, A. V. Zotov, A. A. Saranin
Summary: Co-adsorption of Pb and Bi onto Si(111) and Ge(111) surfaces leads to the formation of atomic-layer PbBi compounds with similar structures. These compounds exhibit different electronic properties, with the PbBi compound on Ge(111) showing a distinct behavior compared to that on Si(111). These findings are expected to be significant for the development of new electronic devices in the ultimate two-dimensional limit.
FRONTIERS IN MATERIALS
(2022)
Article
Electrochemistry
Prasit Pattananuwat, Amornrat Khampuanbut, Husna Haromae
Summary: A novel photo-assisted supercapacitor electrode, bismuth-iron oxide/graphene, has been successfully developed, showing the highest specific capacitance and better rate capability under UV irradiation. This finding provides a new potential electrode material for direct storage of abundant solar energy.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Multidisciplinary
Yang Sun, Yiyue Chen, Chunyao Lan, You Tan, Lin Zhang, Bowen Dong, Song Lan
Summary: Fe-6.5 wt.% Si nanocrystalline alloys with good magnetic softness were prepared by mechanical alloying via a high-energy ball mill. The alloying process results in the formation of a single solid-solution phase with a grain size of about 10 nm. Ball-milling effectively reduces the particle size of the alloy powders and controls the particle size distribution. The Fe-Si alloy powders show good magnetic softness, with a saturation magnetization of about 198 Am-2/kg and coercivity of about 20 A/m.
Article
Chemistry, Multidisciplinary
Kingshuk Bag, Kottari Naresh, Narayanaswamy Jayaraman
Summary: This study reports on bolaamphiphilic constructs formed by alpha-D-mannopyranoside-terphenyl-alpha-D-mannopyranoside and alpha-L-rhamnopyranoside-terphenyl-alpha-L-rhamnopyranoside. The water-soluble bolaamphiphiles self-assemble to form aggregates with different morphologies, and demonstrate configurational control in chirality emergence.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
C. Rose Kennedy, Matthew Joannou, Janelle E. Steves, Jordan M. Hoyt, Carli B. Kovel, Paul J. Chirik
Summary: This study describes the selective intermolecular homodimerization and cross-cycloaddition of vinylsilanes with unbiased 1,3-dienes catalyzed by a pyridine-2,6-diimine (PDI) iron complex. The chemoselectivity of these reactions was found to be distinct from that of similar alpha-olefin reactions with 1,3-dienes. Mechanistic studies provided insights into substrate-controlled regioselectivity, and identified diamagnetic iron diene and paramagnetic iron olefin complexes as catalyst resting states. The relative rates of beta-H elimination and C-C reductive elimination were ultimately governed by the silyl substituents, dictating final product formation.
Article
Chemistry, Inorganic & Nuclear
Connor P. McLoughlin, James C. Fettinger, Philip P. Power
Summary: Six new transition-metal aryloxides were synthesized and characterized to compare the steric and dispersive characteristics of their substituents. The results show that the -C6H2-2,4,6-Cy-3 substituent has higher dispersive energy donor properties and influences the thermal stability. Complexes 1 and 2 exhibit high thermal stability and short-contact H···H interactions, while complexes 5 and 6 have a lower association number due to the lower dispersion energy donor properties of the -OC6H3-2,6-Pr-i (2) ligand.
INORGANIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Salah S. Massoud, Febee R. Louka, Madison T. Dial, Nahed N. M. H. Salem, Roland C. Fischer, Ana Torvisco, Franz A. Mautner, Kai Nakashima, Makoto Handa, Masahiro Mikuriya
Summary: Three new tripod tetradentate phenolate-amines were synthesized and characterized, along with seven related published ligands. Various complexes with different structures were synthesized using these ligands and their molecular structures were determined. The magnetic susceptibility study revealed different antiferromagnetic coupling strengths in the complexes.
Article
Nanoscience & Nanotechnology
Matthias Mueller, Manfred Drusgala, Roland C. Fischer, Ana Torvisco, Wolfgang Kern, Michael Haas, Christine Bandl
Summary: Since the past few decades, surface-initiated photopolymerization techniques have gained increasing interest. Coupling of photoinitiators to surfaces and particles has become an important research topic in material and surface sciences. Covalent coupling of photoinitiators and subsequent photopolymerizations provide a wide range of surface properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Clemens Taube, Jannis Fidelius, Kai Schwedtmann, Christopher Ziegler, Florian Kreuter, Leigh Loots, Leonard J. Barbour, Ralf Tonner-Zech, Robert Wolf, Jan J. Weigand
Summary: In this study, diphosphene complexes capable of reversible photoisomerizations through haptotropic rearrangements were investigated. Upon irradiation with blue or UV light, the complexes undergo isomerization and change in color. The reversible nature of the isomerization can be controlled by changing the environmental conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Christian M. Hoidn, Karolina Trabitsch, Kai Schwedtmann, Clemens Taube, Jan J. Weigand, Robert Wolf
Summary: In this study, a new complex was synthesized by reacting diphosphorus derivatives with a cyclotetraphosphido cobalt complex at low temperature. The synthesized complex was characterized using NMR spectroscopy and single-crystal X-ray diffraction. A mechanism of formation was proposed based on the 31P NMR monitoring studies.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Editorial Material
Chemistry, Multidisciplinary
Rory Waterman, Jan J. Weigand, Robert Wolf
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Miguel A. Chacon-Teran, Vanessa R. R. Landaeta, Robert Wolf, Rafael E. E. Rodriguez-Lugo
Summary: A Rh(I) complex with a P,N ligand has been synthesized and characterized. It has been found that this complex can catalyze the 1,2-regioselective hydroboration of pyridines and quinolines with high yield and low catalyst loading.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Alexandra Haidinger, Christina I. Dilly, Roland C. Fischer, Dennis Svatunek, Johanna M. Uher, Johann A. Hlina
Summary: A series of metal complexes containing both rare-earth and silver metals were synthesized and characterized. Their physical and chemical properties were investigated through various spectroscopic and computational methods.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Alice C. Phung, James C. Fettinger, Philip P. Power
Summary: A series of ferriostannylenes with different iron and/or tin substituents were synthesized and their structures and spectroscopic properties were investigated. The results showed that the substituents have significant effects on the structure and properties of the compounds.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Benedikt N. Baumann, Helge Lange, Felix Seeberger, Philipp Bueschelberger, Robert Wolf, Marko Hapke
Summary: In this study, highly reduced anthracene and naphthalene cobaltates and ferrates were found to catalyze the cyclization of diynes and triynes, resulting in the expected cycloaddition products as well as unexpected annulation products. Additionally, the solvent was found to significantly affect the substrate conversion rate.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Franz A. A. Mautner, Roland C. C. Fischer, Ana Torvisco, Kai Nakashima, Makoto Handa, Masahiro Mikuriya, Nahed M. H. Salem, Gabriel J. J. Overby, Madison R. R. Maier, Febee R. R. Louka, Salah S. S. Massoud
Summary: Novel bridged acetato dinuclear complexes were synthesized and characterized. These complexes exhibited different magnetic properties.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Leo W. T. Parsons, James C. C. Fettinger, Louise A. A. Berben
Summary: This study explores N-alkylation and N-metallation of pyridine to understand how metal-ligand complexes can mimic NAD(+) redox chemistry. The syntheses of substituted dipyrazolylpyridine (pz(2)P) compounds (pz(2)P)Me+ (1(+)) and (pz(2)P)GaCl2+ (2(+)) are reported and compared with previous transition element pz(2)P complexes. Cyclic voltammetry measurements show that cationic 1(+) and 2(+) exhibit irreversible reduction events at an anodic potential of SIM;900 mV, unlike the neutral pz(2)P complexes of divalent metals.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Mingchun Gao, Jose M. Ruiz, Emily Jimenez, Anna Lo, Croix J. Laconsay, James C. Fettinger, Dean J. Tantillo, Jared T. Shaw
Summary: Substrates designed for 1,4-C-H insertion to produce benzocyclobutenes underwent a unique elimination reaction, resulting in the formation of ortho-quinone dimethide (o-QDM) intermediates that further participated in Diels-Alder or hetero-Diels-Alder cycloadditions. The analogous benzylic acetals or ethers, on the other hand, bypassed the C-H insertion pathway and, after hydride transfer, underwent a de-aromatizing elimination reaction to form o-QDM at ambient temperature. The resulting dienes exhibited high diastereo- and regio-selectivity when involved in various cycloaddition reactions. This method represents a rare example of catalytic o-QDM generation without the involvement of a benzocyclobutene, and it offers a mild and ambient temperature approach to access these valuable intermediates. DFT calculations provided support for the proposed mechanism. Furthermore, this methodology was successfully applied to the synthesis of (+/-)-isolariciresinol with an overall yield of 41%.
Article
Chemistry, Multidisciplinary
Bettina Schlemmer, Aileen Sauermoser, Sarah Holler, Elena Zuccala, Birgit Ehmann, Matiss Reinfelds, Roland C. Fischer, Heinz Amenitsch, Jose M. Marin-Beloqui, Lucie Ludvikova, Tomas Slanina, Michael Haas, Thomas Rath, Gregor Trimmel
Summary: By introducing semimetal silicon and germanium, four monomeric perylene diimide acceptors were prepared in the bay position of the molecules, which exhibited high crystallinity and good optoelectronic properties, leading to a high power conversion efficiency in the blend with the conjugated polymer PM6.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Wenxing Zou, Kristian L. Mears, James C. Fettinger, Philip P. Power
Summary: Thermal Sn-C cleavage in diarylstannylene Sn(Ar-iPr4)(2) was used to generate radicals for alkyne arylstannylation. The reaction produced aryl vinyl stannylene complexes with different substituents and a known distannene.
CHEMICAL COMMUNICATIONS
(2023)
