Article
Physics, Applied
Meng Song, Jun Zhao, Caixing Liu, Miao He, Yihao Wang, Yuyan Han, Langsheng Ling, Liang Cao, Lei Zhang, Zhe Qu, Yimin Xiong
Summary: Understanding the magnetic properties and critical behavior of noncollinear itinerant magnet PrMn2Ge2 is essential for exploring spintronics devices based on topological spin textures. This work investigates the anisotropic magnetic properties and observes the antiferromagnetic to ferromagnetic transition induced by magnetic field and temperature. It is found that PrMn2Ge2 possesses multiple magnetic interactions, as indicated by the critical exponents and interaction function. The competition of these interactions in PrMn2Ge2 may be responsible for the skyrmionic bubbles observed at room temperature.
APPLIED PHYSICS LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Veacheslav Vieru, Silvia Gomez-Coca, Eliseo Ruiz, Liviu F. Chibotaru
Summary: This review discusses the synthesis methods of single-molecule magnets (SMMs) and the basic factors affecting their performance, as well as the strategies for further enhancing SMM performance. Practical approaches for designing SMMs for memory devices are also presented.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Inorganic & Nuclear
Mengfei Wang, Kazuyuki Ishii
Summary: This review focuses on the photochemistry of phthalocyanine complexes with transition metal ions, especially second- and third-row transition metal ions. It summarizes their absorption, excited-state dynamics, and photofunctions, providing a direction for designing various photofunctions based on metal phthalocyanine complexes.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Biochemistry & Molecular Biology
Vladimir S. S. Mironov, Eugenia V. V. Peresypkina, Kira E. E. Vostrikova
Summary: Two novel 1D heterobimetallic compounds {[Mn-III(SB2+)M-III(CN)(6)]center dot 4H(2)O}(n) based on cyanidometallates [Os-III(CN)(6)](3-) and [Ru-III(CN)(6)](3-) were synthesized and characterized, showing single-chain magnet behavior.
Article
Chemistry, Inorganic & Nuclear
Okten Ungor, Maylu Burrows, Tianhan Liu, Michael Bodensteiner, Yuwaraj Adhikari, Zhenqi Hua, Brian Casas, Luis Balicas, Peng Xiong, Michael Shatruk
Summary: The metal complexes containing TCNQ anions form columnar substructures that provide efficient charge-transporting pathways, resulting in semiconducting behavior in all three compounds.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yulia P. Tupolova, Sergey I. Levchenkov, Leonid D. Popov, Vladimir E. Lebedev, Vadim V. Minin, Nikolay N. Efimov, Vladimir A. Lazarenko, Yan V. Zubavichus, Alexander A. Zubenko, Igor N. Shcherbakov
Summary: Copper(ii) coordination compounds with different forms of magnetic exchange interactions were synthesized and structurally analyzed. The compound (I) exhibited ferromagnetic exchange interactions, while compound (II) showed antiferromagnetic exchange interactions. In both crystalline structures, intermolecular hydrogen bonding resulted in weak magnetic exchange interactions of both the ferro- and antiferromagnetic types.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Navid Jameei Moghaddam, Marcos Gil-Sepulcre, Jia-Wei Wang, Jordi Benet-Buchholz, Carolina Gimbert-Surinach, Antoni Llobet
Summary: Two Ni complexes with unique BDI ligands were reported, and their chemical properties were revealed through electrochemical and spectroscopic analysis. These complexes demonstrate strong activity for the proton reduction reaction in DMF.
INORGANIC CHEMISTRY
(2022)
Review
Chemistry, Physical
Arpad Molnar
Summary: Cyclodextrins are green products that can be obtained through enzymatic degradation of starch, and are used in catalytic studies for various applications. They have high potential for sustainable chemistry when combined with catalytically active species in diverse reactions.
Article
Chemistry, Multidisciplinary
Hao Li, Gabriel Sanchez-Santolino, Sergio Puebla, Riccardo Frisenda, Abdullah M. Al-Enizi, Ayman Nafady, Roberto D'Agosta, Andres Castellanos-Gomez
Summary: The study demonstrates that applying uniaxial strain to ZrSe3 results in a blueshift of excitonic features, with the shift magnitude depending on the direction of strain application.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jin Young Koo, Jongwon Oh, Gyeongeun Hyun, Hee Cheul Choi, Intek Song, Seok Min Yoon
Summary: A new oxo-bridged chromium-molybdenum heterometallic complex, O-CrMoHC, was synthesized by a solvothermal reaction. The complex exhibits anisotropic conductivity in single crystals, with higher electrical conductivity along the [01-1] direction compared to the [100] direction. This is the first report of anisotropic conductivity observed in a monomeric heterometallic complex single crystal.
INORGANIC CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Masahiro Kamada, Weijun Zeng, Antti Laitinen, Jayanta Sarkar, Sheng-Shiuan Yeh, Kirsi Tappura, Heikki Seppa, Pertti Hakonen
Summary: The authors investigate the sources of 1/f noise using a suspended graphene Corbino device and provide evidence that mobility fluctuations are an essential contributing factor. The work shows that the noise can be suppressed in a high-mobility graphene Corbino disk, indicating potential technological benefits for low noise 2D devices. The results suggest that the 1/f noise is induced by scattering of carriers on mobile impurities forming clusters.
COMMUNICATIONS PHYSICS
(2023)
Article
Multidisciplinary Sciences
K. Komedera, J. Gatlik, A. Blachowski, J. Zukrowski, D. Rybicki, A. Delekta, M. Babij, Z. Bukowski
Summary: Investigation of EuFe2-xNixAs2 compounds with 3d and/or 4f magnetic order was done using Fe-57 and Eu-151 Mossbauer spectroscopy. The study found that Ni-substitution suppresses the spin-density wave order of Fe moments, while Eu localized moments still order with a spin reorientation as Ni concentration increases. The transition from antiferromagnetic to ferromagnetic 4f spins coincides with the disappearance of 3d spins order, showing strong coupling between Eu2+ ions and conduction electrons.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Yuying Fan, Huachun Lan, Zenglu Qi, Ruiping Liu, Chengzhi Hu
Summary: This research investigated a novel strategy of simultaneously removing Ni2+ and Cu2+ by synthesizing amyloid fibrils under harsh conditions. In the in-situ scenario, the adsorption capacity of Ni2+ and Cu2+ increased, while acidic waste liquid generation was avoided. The adsorption behaviors of Ni2+ and Cu2+ followed the pseudo-second-order kinetic model and Langmuir isotherm, where the functional groups of amide, hydroxyl, and carboxyl played crucial roles. Metal ions preferred binding to specific residues within the amyloid fibrils. This study has important implications for the removal of heavy metals in strongly acidic wastewater.
Article
Chemistry, Multidisciplinary
Bindusagar Das, Ritu Yadav, Ankita Sharma, Tarak Karmakar, Subrata Kundu
Summary: In this paper, two stable structurally characterized glyoxal radical cations (1(center dot+) and 2(center dot+)) stabilized by cyclic(alkyl)(amino)carbene (CAAC) and bicyclic (alkyl)(amino)carbene (BICAAC) ligands, respectively, were reported. Both 1(center dot+) and 2(center dot+) showed stability under harsh conditions and were the first isolated radicals stabilized by BICAAC ligand.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Maria Stuckart, Natalya Izarova, Maria Gloss, Jennifer Klose, Carolin Schmitz-Antoniak, Paul Koegerler, Berthold Kersting, Kirill Yu Monakhov
Summary: A new polyoxometalate compound with V-IV ions and 39-tungsto-4-arsenate(III) units was synthesized and fully characterized. It showed interesting magnetic properties with both antiferromagnetic exchange interactions and Curie paramagnetism. The compound was successfully deposited on gold surfaces after preparation of its trihexyltetradecylphosphonium salt.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Xudong Hou, Giang Truong Nguyen, Tingting Xu, Haipeng Wei, Tun Seng Herng, Guifei Huo, Dingguan Wang, Jun Ding, Shaofei Wu, Liviu Ungur, Jishan Wu
Summary: The incorporation of organic radicals into coordination polymers is a promising strategy for promoting metal-ligand exchange interactions. However, stable organic radical-based ligands are limited in number. In this study, we report two new tris(2,4,6-trichlorophenyl)methyl radical-based ligands and successfully obtain the corresponding coordination polymers. Magnetic measurements and theoretical calculations indicate the presence of antiferromagnetic coupling between the paramagnetic cobalt(II) ions and the radical ligands.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Maolin You, Dong Shao, Yi-Fei Deng, Jiong Yang, Nian-Tao Yao, Yin-Shan Meng, Liviu Ungur, Yuan-Zhu Zhang
Summary: In this study, a hexanuclear complex was synthesized and showed gradual spin crossover during desolvation, as well as rare two-step spin transition behavior.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Liviu Ungur, Bernat Szabo, Zeid A. ALOthman, Abdullah A. S. Al-Kahtani, Liviu F. Chibotaru
Summary: This study investigates the luminescence mechanisms of lanthanide complexes using advanced computational methods, revealing that three quarters of the fluorescence intensity comes from covalent binding mechanisms.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Liviu Ungur, Xin Ya Tan, Wee Shong Chin
Summary: Layered double hydroxides (LDH) are highly versatile compounds that can be used in various applications such as energy storage, catalysis, heavy metal adsorption, etc. However, the presence of carbonate contamination affects the versatility and tunability of LDH, posing challenges in its synthesis and performance.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Malay Dolai, Surajit Biswas, Eufemio Moreno-Pineda, Wolfgang Wernsdorfer, Mahammad Ali, Razan A. Alshgari, Saikh Md. Wabaidur, Ashutosh Ghosh
Summary: Two dinuclear complexes were synthesized and characterized, and their catalytic activity in the carbon dioxide insertion reaction into epoxides for the formation of organic cyclic carbonates was studied. The complexes showed efficient catalytic activity with high yields and turnover numbers.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
D. Rieger, S. Guenzler, M. Spiecker, P. Paluch, P. Winkel, L. Hahn, J. K. Hohmann, A. Bacher, W. Wernsdorfer, I. M. Pop
Summary: By using a self-structured aluminum nanojunction, a nonlinearity medium can be formed between superconducting electrodes, acting as a replacement for Josephson junctions. The new type of qubit, gralmonium, exhibits similar performance to the traditional fluxonium qubit, but the lack of a mesoscopic parallel plate capacitor leads to a significantly larger charging energy for the aluminum nanojunction, providing a powerful diagnostic tool for microscopic defects in superconducting materials.
Article
Chemistry, Inorganic & Nuclear
Gheorghe Taran, Edgar Bonet, Eufemio Moreno-Pineda, Mario Ruben, Wolfgang Wernsdorfer
Summary: Through numerical simulation, we find that phonon-modulated hyperfine interaction opens a direct relaxation channel between the nuclear spins and the phonon bath. The mechanism is of potential importance for the theory of spin bath and the relaxation dynamics of the molecular spins.
INORGANIC CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Veacheslav Vieru, Silvia Gomez-Coca, Eliseo Ruiz, Liviu F. Chibotaru
Summary: This review discusses the synthesis methods of single-molecule magnets (SMMs) and the basic factors affecting their performance, as well as the strategies for further enhancing SMM performance. Practical approaches for designing SMMs for memory devices are also presented.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Ting-Ting Ruan, Eufemio Moreno-Pineda, Michael Schulze, Soeren Schlittenhardt, Thomas Brietzke, Hans-Jurgen Holdt, Senthil Kumar Kuppusamy, Wolfgang Wernsdorfer, Mario Ruben
Summary: This article describes two dysprosium-based isotopologues and investigates their magnetic properties. The study found that shorter distances between Dy(III) are crucial for creating Qudits with enlarged Hilbert spaces.
INORGANIC CHEMISTRY
(2023)
Article
Physics, Applied
D. Rieger, S. Guenzler, M. Spiecker, A. Nambisan, W. Wernsdorfer, I. M. Pop
Summary: Resonator measurements are a powerful tool for characterizing a material's microwave response. The losses of a resonant mode can be quantified by its internal quality factor Qi, which can be affected by Fano interference. Limited knowledge of interfering paths in a setup leads to uncertainty in Qi, increasing with the coupling coefficient. This study demonstrates the relevance of Fano interference in microwave resonator measurements and provides insight into eliminating systematic errors.
PHYSICAL REVIEW APPLIED
(2023)
Article
Materials Science, Multidisciplinary
Naoya Iwahara, Liviu F. Chibotaru
Summary: The synergistic interplay of different interactions in materials leads to the emergence of novel quantum phenomena. Spin-orbit and vibronic couplings usually counteract each other; however, in cubic d(1) double perovskites they coexist and give rise to spin-orbit-lattice entanglement with unquenched dynamic Jahn-Teller effect on the metal sites. The correlation of these entangled states induced by intersite interactions has not been assessed so far.
Article
Chemistry, Inorganic & Nuclear
Dan Liu, Xuefeng Guo, Xiaoyong Zhang, Abdullah A. Al-Kahtani, Liviu F. Chibotaru
Summary: In this study, the single-molecule magnet (SMM) behavior of a series of lanthanide ions (Tb3+, Dy3+, Ho3+, Er3+, Tm3+ and Yb3+) encapsulated in zigzag carbon nanotubes (CNTs) of different diameters was investigated ab initio. The results showed that, except for Er3+ encapsulated in the (7,0) CNT, none of the investigated systems exhibited any blocking behavior. This can be attributed to the strong competition between axial and equatorial contributions to the crystal field of the encapsulated ions, resulting in weak or lack of magnetic axiality. These results provide useful theoretical guidance for the design of high-performance SMMs via modulating the crystal field of the ligand environment.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Selvakumar Arumugam, Bjoern Schwarz, Prathap Ravichandran, Sunil Kumar, Liviu Ungur, Kartik Chandra Mondal
Summary: This work investigates the dynamic magnetic properties of a complex [(Cp-Ar3)(4)(Dy2Cl4K2)-Cl-III]& BULL;3.5(C7H8) synthesized using a tri-aryl-substituted cyclopentadienyl ligand (Cp-Ar3). The Dy(III)-metallocene weakly couples via K2Cl4 and exhibits slow relaxation of magnetization below 14.5 K under zero applied dc field through KD3 energy levels with an energy barrier of 136.9/133.7 cm(-1) at the Dy sites. The coordination of two chloride ions at each Dy centre leads to geometrical distortion and reduction of the single-ion axial anisotropy energy barrier.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Naoya Iwahara, Zhishuo Huang, Ivo Neefjes, Liviu F. Chibotaru
Summary: The investigation of multipolar exchange interaction between lanthanide ions and complex low-temperature magnetic order in insulating lanthanides is essential for understanding their properties. By using an ab initio approach, we have developed a first-principles microscopic theory of multipolar exchange interaction between J multiplets in f-metal compounds.
Article
Chemistry, Inorganic & Nuclear
Konstantinos Karachousos-Spiliotakopoulos, Vassilis Tangoulis, Nikos Panagiotou, Anastasios Tasiopoulos, Eufemio Moreno-Pineda, Wolfgang Wernsdorfer, Michael Schulze, Alexandre M. P. Botas, Luis D. Carlos
Summary: The complex [YbCo(CN)6(bpyO2)2(H2O)3]·4H2O synthesized from the reaction of YbCl3·6H2O, K-3[Co(CN)6], and bpyO2 has been characterized and shown to exhibit field-induced single molecule magnet behavior and high-temperature luminescence sensitivity.
DALTON TRANSACTIONS
(2022)