Article
Chemistry, Physical
Dong-Qing Wu, Le Shi, Dong Shao, Mengying Xia, Yuwei Liao, Yanjiao Wu, Jiajing Wen, Bin Zhai
Summary: A rare zigzag cyanide-bridged tetranuclear complex was successfully synthesized and characterized. It exhibited notable changes in magnetic behaviors after the release of crystallized water molecules and showed single-molecule magnet behavior.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Multidisciplinary
Qi Li, Qian Zhang, Wu-Ji Wei, A-Ni Wang, Ji-Xiang Hu, Guo-Ming Wang
Summary: This study discovered a simple radical-actuated photochromic molecule for constructing a novel system of photochromic materials, showing potential applications in the field of optical switching and displays.
CHEMICAL COMMUNICATIONS
(2021)
Review
Chemistry, Inorganic & Nuclear
Jin-Hua Wang, Zhao-Yang Li, Masahiro Yamashita, Xian-He Bu
Summary: This article explores the latest developments in novel functional molecular-based magnetic materials, focusing on cyano-bridged transition-metal-based single-molecule magnets and single-chain magnets research. The review mainly discusses the construction of different molecular-magnetic materials based on the cyanide ligand's strong affinity for transition metals. Key topics include structural topologies, SMMs, SCMs, and important principles for constructing diverse magnetic materials.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Qiang Liu, Nian-Tao Yao, Hui-Ying Sun, Ji-Xiang Hu, Yin-Shan Meng, Tao Liu
Summary: In this study, cyanide-bridged coordination polymers were synthesized and their thermally induced metal-to-metal electron transfer and dielectric properties were investigated. The low-temperature phase can be transformed into the high-temperature phase through light-driven electron transfer. One of the compounds exhibited synergistic switching of dielectric and magnetic properties.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yue Cheng, Qi Liu, Zi-Yi Chen, Yuan-Zhu Zhang
Summary: The treatment of CoCl2 center dot 6H(2)O and tris(pyrazolyl-1-yl)borate tricyanoiron(III) anions at an elevated temperature resulted in two less-common pearl-chain-like compounds. Compound 1 exhibited typical single-chain magnet behavior with an effective energy barrier of 28.0 K, while compound 2 did not show Glauber dynamics despite their similar structures. Changes in the local coordination environments of cobalt ions and cyanide linkages were identified as contributing factors to the significant difference in their magnetic properties.
DALTON TRANSACTIONS
(2021)
Article
Engineering, Mechanical
Lior Medina, Ashwin A. Seshia
Summary: The study focuses on the limit point behavior of a metastructure composed of two double-clamped beams under distributed electrostatic load. Results indicate the potential for bistable and tristable properties in the structure, depending on certain geometric parameters. The analysis utilizes a reduced order model and local stability analysis to study the complex equilibrium paths and behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Maciej D. Korzynski, Zachariah J. Berkson, Boris Le Guennic, Olivier Cador, Christophe Coperet
Summary: Single-molecule magnets (SMMs) offer unmatched information storage density, potential applications in quantum computing and spintronics, and are mainly organometallic lanthanide complexes. However, the challenge lies in surface immobilization due to the sensitivity of magnetic properties to changes in electronic structure. This study successfully identifies siloxides on partially dehydroxylated silica surface as suitable replacements for typical ligand architectures, leading to a significant increase in magnetization relaxation times.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Xiaoshuang Gou, Ning Liu, Yuewei Wu, Wenlong Lan, Mengmeng Wang, Wei Shi, Peng Cheng
Summary: In this study, a light-induced substance conversion system using an Er(iii) coordination polymer and its Y(iii)-diluted analogue was reported. The transformed products exhibited higher T-XM values and lower effective energy barriers for magnetization reversal compared to the untransformed compounds. This work not only provides a new light-conversion system, but also reveals the nature of photo-induced variation of magnetic properties.
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
Chemistry, Multidisciplinary
Fabrice Pointillart, Jessica Flores Gonzalez, Haiet Douib, Vincent Montigaud, Charles J. McMonagle, Boris Le Guennic, Olivier Cador, Dawid Pinkowicz, Michael R. Probert
Summary: The extreme sensitivity of trivalent lanthanide ions to crystal field variations leads to the emergence of single-molecule magnetic switching under various stimuli. Pressure can be used as an external stimulus to finely tune the magnetic modulation of single-molecule magnets, instead of traditional methods like light irradiation or chemical reactions. Experimental investigation of a well-known single-molecule magnet under high applied pressures demonstrated reversible piezo-chromic properties and pressure modulation of slow magnetic relaxation behavior, which were supported by ab initio calculations. The magnetic study of a diluted sample indicated that variations in the electronic structure mainly have an intermolecular origin with weak intramolecular contribution.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Inorganic & Nuclear
Andoni Zabala-Lekuona, Jose Manuel Seco, Enrique Colacio
Summary: The discovery of Single-Molecule Magnets in 1993 revolutionized the field of information storage by shrinking the size of bits to molecular levels. Despite initially operating at temperatures near absolute zero, collaboration between chemists and physicists have led to the development of materials that can operate above liquid nitrogen temperatures. The evolution of SMMs has involved the study of various routes towards high performance materials, with each route essential for understanding the quantum dynamics behind these molecules.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Mechanics
Lior Medina
Summary: In this study, an expanded dynamic model of an electrostatically actuated double beam metastructure, consisting of geometrically different beams, was formulated and solved. It was found that weakly coupled and geometrically different sub-structures can exhibit global tristability under nonlinear, displacement-dependent, electrostatic actuation and bistability under mechanical, displacement-independent load. The stability of the structures was established using energy method, Lyapunov stability sweep, and quasi-static finite element simulations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Kieran Hymas, Alessandro Soncini
Summary: This study investigates the contributions of radical-lanthanide exchange coupling and crystal-field tunnel splitting to the energy gap between ground and first-excited states in a 4 f single-ion magnet coupled to a noninnocent ligand. A microscopic theory is presented for continuous measurement of dissipative Landau-Zener transitions, which can help disentangle the magnetic coupling and tunnel splitting effects on the energy gap. The model also explains the decoherent spin tunneling observed in the TbPc2 spin transistor, highlighting the role of phonon-mediated spin relaxation and sequential electron transport through the noninnocent ligand in a time-dependent magnetic field.
Article
Chemistry, Multidisciplinary
Shurong Li, Zhenzhang Weng, Linpeng Jiang, Rongjia Wei, Haifeng Su, Lasheng Long, Lansun Zheng, Xiangjian Kong
Summary: Three sandwich-like [Ln2Fe2(B-alpha-FeW9O34)2]10- clusters (Ln2Fe4, Ln = Dy (1), Ho (2), and Y (3)) were synthesized by reacting Na9[B-alpha-SbW9O33], Ln2O3, FeCl3 center dot 6H2O, and KH2PO4. The [B-alpha-FeW9O34]11- units were formed via the in situ conversion of lacunary polyoxometalates (POM) [B-alpha-SbW9O33]9- and the Ln3+ ions were generated from the slow dissolution of Ln2O3, both of which play important roles in the synthesis of Ln2Fe4. Ln2Fe4 is the first 3d-4f cluster assembled from d-metal heteroatom-containing POM. The Dy2Fe4 cluster exhibits single-molecule magnet properties with an 80 K energy barrier in an optimal DC field. Cyclic voltammetry tests and controlled-potential coulometry experiments show that the polyoxometalate Fe heteroatom in clusters 1-3 is also electrochemically active.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Bibhisan Roy, Mallu Chenna Reddy, Gregor P. Jose, Felix C. Niemeyer, Jens Voskuhl, Partha Hazra
Summary: This study presents a pair of luminogens with white light emission and temperature-induced mechanochromic features, capable of specifically illuminating mitochondria with a high Pearson coefficient value. The research opens up new possibilities for designing next generation organic luminogens with potential applications in optical, materials, and biological fields.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Benjamin H. Wilson, Jas S. Ward, David C. Young, Jun-Liang Liu, Corine Mathoniere, Rodolphe Clerac, Paul E. Kruger
Summary: This study describes the self-assembly synthesis of an octanuclear Co-II [2]catenane with unique magnetic properties. By manipulating the synthetic conditions, a mixed-valence non-catenated rectangle can also be obtained. The work demonstrates the precise control of single-molecule magnets in complex arrangements through metallo-supramolecular chemistry.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Miguel Gonzalez, David Gygi, Yangzhong Qin, Qilei Zhu, Elizabeth J. Johnson, Yu-Sheng Chen, Daniel G. Nocera
Summary: The secondary coordination sphere of a metal complex can confine photoeliminated chlorine radicals and provide steric control over their reactivity. This study demonstrates the activity of iron(III) chloride pyridinediimine complexes for selective C(sp(3))-H chlorination and bromination, overriding thermodynamic preference. Transient absorption spectroscopy and photocrystallography confirm the confinement and selectivity arising from the iron secondary coordination sphere.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Isabelle Ly, Antoine Vardon, Nicolas Chanut, Frederic Nallet, Roland J-M Pellenq, Mathieu Rouzieres, Rodolphe Clerac, Joudia Akil, Florence Epron, Catherine Especel, Renal Backov
Summary: By using integrative chemistry, high-porosity CoOx-SiO2 self-standing monoliths have been successfully prepared, showing that cobalt concentration significantly influences the organization and stability of mesoscopic voids, with increasing cobalt concentration favoring the formation of crystalline nanoparticles embedded within silica.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Julia Rienmueller, Andreas Schmidt, Nathan J. Yutronkie, Rodolphe Clerac, C. Gunnar Werncke, Florian Weigend, Stefanie Dehnen
Summary: Lowering the charge of Zintl anions by (element-)organic substituents allows their use as sources of (semi)metal nanostructures. A new strategy was developed using low-coordinate 3d metal complexes as electrophiles, leading to the synthesis of Zintl clusters with uncommon electronic structures and magnetic coupling.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Anni Taponen, Awatef Ayadi, Noora Svahn, Manu K. Lahtinen, Mathieu Rouzieres, Rodolphe Clerac, Heikki M. Tuononen, Aaron Mailman
Summary: This research describes the synthesis, structure, thermal, and magnetic properties of a series of simple binary organic salts based on TCNQ and DTDA. The crystal structures, thermal behavior, and magnetic states are discussed in detail.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Multidisciplinary Sciences
Panagiota Perlepe, Itziar Oyarzabal, Laura Voigt, Mariusz Kubus, Daniel N. Woodruff, Sebastian E. Reyes-Lillo, Michael L. Aubrey, Philippe Negrier, Mathieu Rouzieres, Fabrice Wilhelm, Andrei Rogalev, Jeffrey B. Neaton, Jeffrey R. Long, Corine Mathoniere, Baptiste Vignolle, Kasper S. Pedersen, Rodolphe Clerac
Summary: The electronic synergy between metal ions and organic linkers is essential for engineering molecule-based materials with high electrical conductivity and metallicity. This study demonstrates the crucial role of metal ions in tuning the electronic properties of such materials, leading to high room-temperature conductivity and the existence of a correlated metal state.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Andrew Ritchhart, Alexander S. Filatov, Ie-Rang Jeon, John S. Anderson
Summary: The synthesis, structure, and magnetic properties of two novel pseudo-one-dimensional chromium thiolate coordination polymers (CPs), CrBTT and Cr2BDT3, were reported. The structures of these materials were determined using X-ray powder diffraction, revealing highly symmetric 1D chains embedded within a CP framework. SQUID magnetometry measurements showed a switch from antiferromagnetic to ferromagnetic behavior, controlled by the angular geometrical constraints within the CP scaffold, consistent with the Goodenough-Kanamori-Anderson rules.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xiang Li, Dong Zhang, Yuqing Qian, Wenxuan Liu, Corine Mathonie, Rodolphe Clerac, Xin Bao
Summary: In 2019, a unique Fe-II complex with a low-spin ground state was described by our groups. The accessibility of the low-spin state was hindered by slow dynamics of the high-spin to low-spin phase transition. Here, we report the successful control of this spin-crossover process through metal-ion dilutions. The behavior of thermally induced spin-crossover was observed to emerge or be suppressed depending on the radius of the metal ion used for dilution (Ni-II or Zn-II). The reversible photo-switching was confirmed in all mixed-metal complexes where the low-spin state was thermally accessible.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Andrew Ritchhart, Zhihengyu Chen, Agnish Behera, Ie-Rang Jeon, Karena W. Chapman, Suriyanarayanan Vaikuntanathan, John S. Anderson
Summary: This study reports the synthesis of a pseudo-1D coordination polymer material and investigates its magnetic behavior. The material exhibits a continuous and isomorphous alloy structure, and shows spin glass magnetic behavior at lower Fe loadings. The magnetic behavior is well-modeled by simulation. These findings highlight the importance of coordination polymers and MOF frameworks in tuning physical properties.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zhifei Yan, Kristopher G. Reynolds, Rui Sun, Yongjin Shin, Agnes E. Thorarinsdottir, Miguel I. Gonzalez, Bryan Kudisch, Giulia Galli, Daniel G. Nocera
Summary: This study reports the oxidation chemistry of carbonates, providing concrete pathways for the design of catalysts for carbonate management in energy storage applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Maxime Beau, Olivier Jeannin, Marc Fourmigue, Pascale Auban-Senzier, Claude Pasquier, Pere Alemany, Enric Canadell, Ie-Rang Jeon
Summary: Using a bis(selenomethyl)tetrathiafulvalene (TTF) derivative as a donor and chalcogen bonding (ChB) interactions, charge transfer (CT) salts with unique packing structures were achieved. Two polymorphs of 1:1 CT salts were obtained by reacting EDT-TTF(SeMe)(2) with 2,5-difluoro-7,7,8,8-tetracyanoquinodimethane (F(2)TCNQ). The unique packing structures resulted in different electrical properties, with the alpha-salt showing semiconducting behavior and the beta-salt exhibiting a two-step metal-to-insulator transition with a higher transition temperature than other CT salts.
Article
Chemistry, Multidisciplinary
Corine Mathoniere, Dmitri Mitcov, Evangelia Koumousi, Daniel Amorin-Rosario, Pierre Dechambenoit, Sadaf Fatima Jafri, Philippe Sainctavit, Christophe Cartier Dit Moulin, Loic Toupet, Elzbieta Trzop, Eric Collet, Marie-Anne Arrio, Andrei Rogalev, Fabrice Wilhelm, Rodolphe Clerac
Summary: The switching properties of a cyanido-bridged Fe/Co square molecule were investigated using single-crystal X-ray diffraction and X-ray absorption spectroscopy at both Fe and Co K-edges. The study provides a complete picture of the metal-to-metal electron transfer under different stimuli, highlighting the concerted role played by the Fe and Co sites.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Nina Podjed, Barbara Modec, Rodolphe Clerac, Mathieu Rouzieres, Maria M. Alcaide, Joaquin Lopez-Serrano
Summary: The reactions between [Cu(quin)(2)(H2O)] and a series of aliphatic amino alcohols resulted in structurally diverse copper(II) complexes with different ligands and coordination modes.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zheng Zhou, James McNeely, Joshua Greenough, Zheng Wei, Haixiang Han, Mathieu Rouzieres, Andrey Yu Rogachev, Rodolphe Clerac, Marina A. Petrukhina
Summary: The synthesis and characterization of a novel family of COT-based heterotrimetallic self-assemblies with unique structures and magnetic properties are reported.
