Article
Chemistry, Multidisciplinary
Yanan Huang, Jibing Shen, Shuai Lin, Wenhai Song, Xuebin Zhu, Yuping Sun
Summary: In this study, three different defect-free few-layer M4C3Tx (M = V, Nb, Ta) nanosheets were successfully obtained by a universal synthesis strategy of calcination, selective etching, intercalation, and exfoliation. Comprehensive characterizations confirmed their defect-free few-layer structure, large interlayer spacing, types of functional groups, and abundant valance states. M4C3Tx (M = V, Nb, Ta) free-standing films derived from these nanosheets exhibited good hydrophilia, high thermostability, and conductivity. This work not only provides detailed guidelines for the synthesis of other defect-free few-layer MXenes nanosheets, but also encourages extensive functional explorations for M4C3Tx (M = V, Nb, Ta) MXenes nanosheets in the future.
Article
Materials Science, Multidisciplinary
Fernando L. Reyes Tirado, David C. Dunand
Summary: The newly discovered CoeNbeV- and CoeTaeV-based superalloys exhibit excellent creep resistance due to a stable gamma+gamma' microstructure achieved with additional elements such as Ni, Cr, Ti, and Al. By increasing the concentration of all gamma'-formers, the alloys show a higher gamma'-volume fraction, with high stability and no formation of other phases even after aging at high temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Chong Jing, Sheng-Jian Zhou, Wen Zhang, Zhao-Ying Ding, Zhan-Guo Liu, Yu-Jin Wang, Jia-Hu Ouyang
Summary: A method for the preparation of (Ti,V,Nb,Ta,Mo)(C,N) high-entropy carbonitride ceramics was established through carbothermal reduction-nitridation. The ceramics exhibited promising properties with regards to density, grain size, hardness, and fracture toughness.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Multidisciplinary
Yifan Han, Yue Shang, Wenhui Wan, Yong Liu, Yanfeng Ge
Summary: The study investigates the phonon-mediated superconductivity in 2D metal borides (MB4) using first-principles calculations. It analyzes the electron-phonon coupling and superconductivity of AB-stacked MBenes and finds that NbB4 has the highest superconducting transition temperature of 35.4 K. The study expands the 2D superconducting boride family, which is of great significance for the study of 2D superconductivity.
NEW JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Ceramics
Ke Ma, Xiaoguo Shi, Guangqi He, Jingjing Li, Jingjun Xu, Jun Zuo, Meishuan Li
Summary: High- and medium-entropy materials have gained significant interest for their designable components and tunable structures. In this study, a medium-entropy MAX phase was successfully fabricated using easily available elemental powders. The solid-solution effect with lattice distortion in structure enhanced the mechanical properties of the material, while the electrical and thermal conductivity were decreased due to lattice distortion and scattering effects.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Kan Chen, Ruizhi Zhang, Jan-Willem G. Bos, Michael J. Reece
Summary: The successful synthesis of a single-phase high-entropy half-Heusler compound through mechanical alloying and spark plasma sintering allows for a homogeneous distribution of multiple elements in the samples. The stability of the samples, as well as the ability to exhibit both n-type and p-type semiconductor behavior by adjusting the Fe/Co ratio, indicate the promising potential of the high-entropy concept in extending composition range and tuning thermoelectric properties for half-Heusler materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
X. Q. Han, N. Lin, A. Q. Li, J. Q. Li, Z. G. Wu, Z. Y. Wang, Y. H. He, X. Y. Kang, C. Ma
Summary: The high-entropy ceramics were successfully produced by spark plasma sintering with varying N contents to investigate the impact of N element on microstructure and properties. The introduction of slight nitrides refined the grain size and enhanced hardness. The wear resistance and thermal conductivity initially increased with greater nitride content before decreasing.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Mohammad Noor-A-Alam, Oskar Z. Olszewski, Humberto Campanella, Michael Nolan
Summary: This study shows that the enhancement of piezoelectricity in w-AlN through Li and X (X = V, Nb, Ta) co-doping, making them potential lead-free piezoelectric materials. It also demonstrates the potential of these materials to improve piezoelectric response and electric polarization.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Bingke Li, Chenghua Zhang, Zhehao Sun, Tao Han, Xiang Zhang, Jia Du, Jiexue Wang, Xiuchan Xiao, Ning Wang
Summary: This study uses first-principles calculations to investigate the thermoelectric properties of Tl3XSe4. The results show that Tl3XSe4 exhibits excellent thermoelectric performance, making it a potential high-performance thermoelectric material.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Lan -Ting Shi, Jian-Guo Si, Akun Liang, Robin Turnbull, Peng-Fei Liu, Bao-Tian Wang
Summary: Inspired by the AV3Sb5 family, the topological and superconducting properties of bilayer kagome metal materials YT6Sn6 (T=V, Nb, Ta) were investigated using first-principles calculations. These materials exhibit stability, Z2 topological classification, and weak superconductivity. The predicted superconducting critical temperatures (Tc) for YV6Sn6, YNb6Sn6, and YTa6Sn6 are 0.65 K, 1.17 K, and 0.89 K, respectively. The coexistence of nontrivial topological properties and superconductivity in these bilayer kagome systems is significant for studying the relationship between different physical properties and designing new topological superconductors.
Article
Materials Science, Multidisciplinary
Zahid Anwer, Shuigen Huang, Jozef Vleugels
Summary: Two-phase fully dense high entropy carbide cermets were successfully prepared using conventional processing route. A homogeneous high entropy carbide phase was obtained through liquid phase sintering at 1420 degrees C. Thermodynamic simulations, thermogravimetry, differential scanning calorimetry analysis, electron probe microanalysis, and nanoindentation were performed to study the phase evolution and mechanical properties of the material.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Aina Edgren, Erik Strom, Anand Rajagopal, Magnus Hornqvist Colliander
Summary: The alloying of Mo(Si,Al)2 materials with Nb, Ta, or V through sintering has been investigated. The alloyed materials retained the C40 crystal structure of the un-alloyed reference material. The alloying elements were mainly concentrated in the C40 phase, while the remaining alloying content dissolved in the minority D8m- and D88-structured (Mo,X)5(Si,Al)3 phases. V-alloying also promoted the formation of the C54 crystal structure.
Article
Materials Science, Ceramics
David Medved', Michal Ivor, Alexandra Kovalcikova, Erika Mudra, Tamas Csanadi, Richard Sedlak, Hakan Unsal, Peter Tatarko, Monika Tatarkova, Pavol Sajgalik, Jan Dusza
Summary: The wear characteristics of a high-entropy carbide were studied using a ball-on-flat technique. The wear behavior showed that the friction coefficient and specific wear rate increased with increasing load, and the dominant wear mechanism was identified as mechanical wear.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Adam T. Hand, Adam C. Lamb, Michael G. Richmond, Xiaoping Wang, Carlos A. Steren, Zi-Ling Xue
Summary: The chemistries of Nb(V) and Ta(V) compounds are essentially identical due to lanthanide contraction. The reactions with water reveal different principal paths for the niobium and tantalum analogues, leading to the formation of two different complexes that maintain the (V) oxidation state in both metals.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Yadong Zhou, Yanhong Wang, Jiaojiao Cao, Zhuo Zeng, Taiping Zhou, Rongzhen Liao, Tao Wang, Zhenxing Wang, Zhengcai Xia, Zhongwen Ouyang, Hongcheng Lu
Summary: Two cobalt oxyfluoride antiferromagnets were synthesized and characterized, showing no long-range antiferromagnetic order until low temperatures due to low dimensionality and frustrated triangular lattice. Spin flop transitions and zero-field spin gaps were observed at low temperatures, with high field magnetization measurements confirming the presence of Co2+ ions with pseudospin spin of 1/2.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Applied
Giulio Bresciani, Lorenzo Biancalana, Stefano Zacchini, Guido Pampaloni, Gianluca Ciancaleoni, Fabio Marchetti
Summary: The catalytic activity of a series of diiron complexes based on the {Fe2Cp2(CO)(x)} core (x = 2-3) and containing a bridging aminocarbyne ligand was screened in the transfer hydrogenation reaction of cyclohexanone from isopropanol. The best catalyst among these complexes was [Fe2Cp2(CN)(CO)(mu-CO){mu-CN(Me)(4-C6H4OMe)}], 3a, which exhibited moderate activity and showed a carbyne-centered mechanism, stabilized by the cyanide co-ligand, as supported by DFT calculations and IR analyses.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Alberto Gobbo, Xinyuan Ma, Gianluca Ciancaleoni, Stefano Zacchini, Lorenzo Biancalana, Massimo Guelfi, Guido Pampaloni, Steven P. Nolan, Fabio Marchetti
Summary: The potential of ruthenium(II) arene complexes in catalytic transfer hydrogenation has been widely investigated, but studies on homologous compounds with tris(1-pyrazolyl)methane (tpm) ligand are lacking. In this study, RuCl(kappa(3)-tpm)(PPh3)(2)]Cl reacted with various nitrogen ligands to form [RuCl(kappa(3)-tpm)(PPh3)(L)]Cl (L=NCMe, NCPh, imidazole) in nearly quantitative yields. These complexes were evaluated as catalytic precursors in the transfer hydrogenation of ketones, and complex 2 exhibited the highest activity.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Lorenzo Bonaldi, Marco Bortoluzzi, Stefano Zacchini, Guido Pampaloni, Fabio Marchetti, Lorenzo Biancalana
Summary: The chemistry of 1,2,4,5-tetrazines has attracted attention in the synthesis and application field. Recent studies have shown that regioselective reactions with alkynes and alkenes are favored when the tetrazine ring is coordinated to certain metal centers. This study explores the reactivity of tetrazines with chalcogenocyanate anions and demonstrates the formation of new heterocycles. The resulting ruthenium complexes were characterized using various analytical and spectroscopic techniques.
INORGANIC CHEMISTRY
(2023)
Article
Polymer Science
Giovanni Ricci, Giuseppe Leone, Giorgia Zanchin, Francesco Masi, Stefano Zacchini, Giulio Bresciani, Massimo Guelfi, Guido Pampaloni
Summary: Novel copper complexes were synthesized by reacting copper(II) dichloride and copper(II) dibromide with pyridyl-imine ligands with different substituents. The complexes were characterized and their molecular structure was determined. When combined with methylaluminoxane (MAO), the complexes acted as active and selective catalysts for the polymerization of 1,3-dienes, resulting in polymers with unusual structures.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Giulio Bresciani, Stefano Zacchini, Guido Pampaloni, Marco Bortoluzzi, Fabio Marchetti
Summary: Diiron mu-aminocarbyne complexes can be synthesized by reacting sodium cyanate and tetrabutylammonium thiocyanate with pre-prepared diiron aminocarbyne complexes, yielding different substituted diiron cyanide complexes with yields of 67-81%, through substitution of the acetonitrile ligand. When reacted with potassium selenocyanate at reflux temperature, cyanide complexes can be obtained with yields of 45-67%. When reacted at room temperature in acetone, a small amount of potassium selenocyanate complexes can be obtained. All products were fully characterized and the chiral structure was determined by single crystal X-ray diffraction. DFT calculations shed light on the coordination mode and stability of the {NCSe-} fragment.
Article
Chemistry, Inorganic & Nuclear
Chiara Zappelli, Gianluca Ciancaleoni, Stefano Zacchini, Fabio Marchetti
Summary: In this study, the authors investigated the reactions of [Fe2Cp2(CO)(mu-CO){mu-eta 1:eta 3-C gamma(Fc)-C beta HC alpha(CN)NMe2}] complex with isocyanides (CNR). They were able to characterize and understand the structure and properties of the resulting products.
Article
Chemistry, Inorganic & Nuclear
Giulio Bresciani, Serena Boni, Tiziana Funaioli, Stefano Zacchini, Guido Pampaloni, Natalia Busto, Tarita Biver, Fabio Marchetti
Summary: We synthesized and evaluated the anticancer potential of two series of diruthenium biscyclopentadienyl carbonyl complexes. Novel dimetallacyclopentenone compounds (2-4) were obtained from the thermal reaction of [Ru2Cp2(CO)(μ-CO)(μ-η^1:η^3-C(Ph)C(Ph)C(O)}], 1, with alkynes HCCR [R = C5H4FeCp (Fc), 3-C6H4(Asp), 2-naphthyl; Cp = η(5)-C5H5, Asp = OC(O)-2-C6H4C(O)Me]. The resulting complexes showed cytotoxic activity against cancer cells, different interactions with nucleic acids, and production of ROS.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Giulio Bresciani, Jan Vanco, Tiziana Funaioli, Stefano Zacchini, Tomas Malina, Guido Pampaloni, Zdenek Dvorak, Zdenek Travnicek, Fabio Marchetti
Summary: Diruthenacyclopentenone complexes were synthesized and characterized. The complexes exhibited stronger cytotoxicity than cisplatin against various cancer cell lines, with the 17α-estradiol derived complex showing the highest activity. Further studies revealed that some complexes affected the cell cycle, apoptosis, oxidative stress, and autophagy.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Cristiana Cesari, Marco Bortoluzzi, Tiziana Funaioli, Cristina Femoni, Maria Carmela Iapalucci, Stefano Zacchini
Summary: This study reports the synthesis of Ru6C carbonyl clusters and their reactions with different reagents, the structures of the products were characterized by X-ray diffraction, and the redox behavior was investigated by electrochemical and spectroscopic methods.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Giulio Bresciani, Stefania Volante, Lorenzo Biancalana, Stefano Zacchini, Guido Pampaloni, Fabio Marchetti
Summary: Complexes [FeCpI(CO)(CNR)] and [FeCpI(CNR)2] were synthesized in 58-73% yields through the thermal reactions of [FeCpI(CO)2] with one/two equivalents of CNR, respectively, in the presence of [Fe2Cp2(CO)4] as catalyst. The catalytic potential of 1, 2a-f, and 3a-f in the bulk polymerization of rac-lactide was examined.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Vaibhav Bedi, Dipendu Mandal, Zahid Hussain, Shi-Ming Chen, Yile Wu, Zheng-Wang Qu, Stefan Grimme, Douglas W. Stephan
Summary: The reaction of (tBuO(2)CN)(2) with 9-BBN leads to the formation of a bicyclic heterocyclic compound, while its reactions with BF3 or [Et3Si][B(C6F5)(4)] result in the isolation of different compounds. Computational studies reveal that the steric and electronic properties of the Lewis acid are important in the formation of one of the compounds.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chisa Itoh, Haruka Yoshino, Taku Kitayama, Wataru Kosaka, Hitoshi Miyasaka
Summary: A new synthetic route for constructing functional paddlewheel diruthenium(II,II) complexes was developed, utilizing Schiff base condensation reactions. The attached Schiff base groups significantly affected the electronic states of the resulting complexes, as revealed by cyclic voltammetry and DFT calculations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Danrui Ni, Haozhe Wang, Xianghan Xu, Weiwei Xie, Robert J. Cava
Summary: A layered rhombohedral polymorph of indium(iii) triiodide is synthesized at high pressure and temperature. It has an orange color, which is different from ambient pressure InI3, which has a monoclinic molecular structure and a light-yellow color.
DALTON TRANSACTIONS
(2024)
Review
Chemistry, Inorganic & Nuclear
Juan Carlos Perez-Sanchez, Raquel P. Herrera, M. Concepcion Gimeno
Summary: Gold(II) complexes have been less utilized in catalysis compared to their gold(I) and gold(III) counterparts. However, gold(II) complexes offer potential in homo-coupling and cross-coupling reactions, as they are more easily accessible through simplified oxidation and reduction processes. Gold(II) exhibits characteristics of both soft acid gold(I) and hard acid gold(III). This review explores the unique reactivity and potential applications of gold(II) species, highlighting their significance in catalytic transformations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Nighat Yousuf, Yanping Ma, Qaiser Mahmood, Wenjuan Zhang, Yizhou Wang, Hassan Saeed, Wen-Hua Sun
Summary: In this study, a series of structurally rigid cyclooctyl-fused iminopyridine iron complexes were synthesized and used with methylaluminoxane for isoprene polymerization. The extent of steric hindrance of the ligand framework was found to significantly affect catalytic performance, with less hindrance leading to better activity and stability.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chenghao Song, Huiwei Du, Menglei Xu, Jie Yang, Xinyu Zhang, Jungan Wang, Yuanfang Zhang, Chengjun Gu, Rui Li, Tao Hong, Jingji Zhang, Jiangying Wang, Yongchun Ye
Summary: This study improves the performance of perovskite solar cells by using a dual-hole transport layer strategy. This strategy enhances the charge transfer efficiency of the transport layer, reduces charge recombination, and improves the quality of the perovskite film layer. Ultimately, the stability of the device is enhanced.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mahender Singh, Aakash Yadav, Ranjit Singh, Chullikkattil P. Pradeep
Summary: A new aryl selenonium polyoxometalate hybrid was developed and compared with an aryl sulfonium polyoxometalate hybrid in terms of their photocatalytic properties. It was found that the aryl selenonium hybrid exhibited better catalytic performance, which could be attributed to the larger atomic radii of selenium stabilizing the photogenerated electron-hole pair more efficiently. Additionally, the generation of elemental selenium through cleavage of C-Se bonds during catalysis was observed.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Yuhan Xie, Boyu Dong, Xuemin Wang, Siyuan Wang, Jinxi Chen, Yongbing Lou
Summary: This study successfully fabricated visible-light-responsive three-dimensional core-shell CoSe2/ZnIn2S4 heterostructures and achieved attractive activity in photocatalytic hydrogen evolution. The presence of CoSe2 improved light absorption and accelerated charge transfer kinetics. The strong interaction between CoSe2 and ZnIn2S4 reduced charge recombination, further enhancing photocatalytic activity for hydrogen evolution.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Andre L. de O. Batista, Joao Marcos T. Palheta, Mauricio J. Piotrowski, Celso R. C. Rego, Diego Guedes-Sobrinho, Alexandre C. Dias
Summary: This study presents a simulation protocol that provides a solid foundation for exploring two-dimensional materials. Using the TiBr2 2H monolayer as an example, the study reveals its promising properties for optoelectronic and valleytronic applications, including its stability, spin-orbit coupling effects, and optical helicity selection rule.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Jiang Jiang, Zi-Wei Li, Zhi-Zhuan Zhang, Bin Tan, Zhao-Feng Wu, Xiao-Ying Huang
Summary: In this work, two metal organic frameworks (MOFs) containing {Cu2I2} clusters, Eu-CuI-INA and Sr-K-CuI-INA, were synthesized and characterized. Both materials have a three-dimensional structure with {Cu2I2} clusters coordinated by INA(-) ligands and Eu3+ or Sr2+ ions. The Sr-K-CuI-INA material exhibited sensitive fluorescence sensing behaviors towards cysteine and nitro-bearing molecules, showing potential applications in bio and explosive molecule sensing. This work provides a good reference for designing fluorescent MOF probes containing CuI molecules.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhiya Lin, Jiasheng Wu, Qianwen Ye, Yulong Chen, Hai Jia, Xiaohui Huang, Shaoming Ying
Summary: Na-ion batteries (NIBs) have attracted great interest as a potential technology for grid-scale energy storage due to the wide distribution, low cost, and environmental friendliness of sodium resources. However, their implementation is hindered by low rate capability and cycling stability caused by the large ionic size of Na+. In this study, a three-dimensional nanoarchitectured coral-like CoSe2@N-doped carbon (CL-CoSe2@NC) was synthesized, and it exhibited improved sodium storage properties with better electrode kinetics and a stable SEI film.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Ya-Qiong Zhang, Yu Zhang, Guoping Zeng, Rong-Zhen Liao, Man Li
Summary: The mechanism and selectivity of CO2 reduction under visible light were investigated using density functional calculations. The results showed that a tetradentate PNNP-type Iridium(III) complex exhibited high activity and selectivity in the reaction.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Sanyukta Ghosh, Shubhanth Jain, Soumya Ranjan Mishra, Gerda Rogl, Peter Rogl, Ernst Bauer, B. S. Murty, A. Govindaraj, Ramesh Chandra Mallik
Summary: In this study, reduced graphene oxide (rGO) was uniformly dispersed in the In0.5Co4Sb12 bulk material by ultrasonication, which effectively reduced the lattice thermal conductivity and improved the thermoelectric efficiency.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mika Takeuchi, Yutaka Amao
Summary: This study developed an effective visible-light driven system for fumaric acid production using renewable resources such as biomass derivatives, providing an alternative to the current petroleum-based synthesis methods.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Juan Jian, Meiting Wang, Zhuo Wang, Jingwen Meng, Yuqin Yang, Limin Chang
Summary: Developing low-cost and self-supported bifunctional catalysts is crucial for highly efficient water splitting devices. In this study, nano-NiFe2O4 was directly grown onto iron foil surface and Sn4+ was introduced into the NiFe2O4. The resulting Sn-NiFe2O4/IF showed low overpotentials and high current densities during oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), making it a promising catalyst for large-scale hydrogen production.
DALTON TRANSACTIONS
(2024)
