Article
Chemistry, Multidisciplinary
Patricia S. Ferreira, Jose F. Malta, Nuno A. G. Bandeira, Alexander Allgaier, Joris van Slageren, Jose A. Paixao, Manuel Almeida, Laura C. J. Pereira, Pedro T. Gomes
Summary: A new homoleptic Co(ii) complex with two highly sterically congested 2-formiminopyrrolyl N,N'-chelating ligands is reported, showing slow relaxation of magnetization at zero static field. This compound has a large zero-field splitting parameter D of -42.6(4) cm(-1), resulting in a spin-reversal energy barrier U-eff of 85 cm(-1).
CHEMICAL COMMUNICATIONS
(2022)
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
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
Chemistry, Multidisciplinary
Shujing Liu, Mingzhen Zhang, Can Xu, Xinfang Zhang, Sihuai Chen, Jun Yuan, Lihui Jia
Summary: By synthesizing and characterizing two series of lanthanide metal complexes, it was found that different substituents on benzoate ligands led to a change in coordination number and a modification of coordination environment, resulting in a change in single-molecule magnetic behavior.
CRYSTAL GROWTH & DESIGN
(2023)
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
Mengmeng Wang, Ying Guo, Zongsu Han, Xi Cheng, Yi-Quan Zhang, Wei Shi, Peng Cheng
Summary: Two mononuclear D-III single-molecule magnets with different ligand substituents exhibit similar coordination environments but different magnetization dynamics. The energy gap of 2 is higher than 1, leading to a lower relaxation rate of magnetization through quantum tunneling.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Hui-Hui Cui, Hong-Juan Xu, Tengkun Zhang, Shuchang Luo, Wei Tong, Miao Wang, Jin Wang, Lei Chen, Yanfeng Tang
Summary: Two isomeric Co(ii) complexes with the same molecular formula of [Co(napy)(2)(NO3)(2)] (napy = 1,8-naphthyridine) were synthesized and their structures were determined. The complexes exhibit highly irregular six-(1) and seven-coordinate (2) geometries. Magnetic measurements, X-band EPR data, and theoretical calculations were conducted to investigate their properties, revealing field-induced slow magnetic relaxation in both complexes, with 2 attributed to an easy-plane anisotropy.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
Ji-Tun Chen, Teng-Da Zhou, Wen-Bin Sun
Summary: Lanthanide-based single-molecule magnets (SMMs) have garnered attention due to their potential in quantum information processing, storage, and spintronics. Recent breakthroughs have made them promising for practical applications, although challenges remain in suppressing quantum tunneling of magnetization and integrating them into devices. Multifunctional 4f-based SMMs with optical and electronic properties offer new perspectives for future device applications and understanding of magnetic relaxation behavior.
DALTON TRANSACTIONS
(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
Soumalya Roy, Jiyuan Du, Ezhava Manu Manohar, Lin Sun, Naushad Ahmed, Atanu Dey, Sourav Das
Summary: In this study, a tridentate N,N,O ligand (LNO2H) was used to synthesize two neutral structurally similar complexes. X-ray single-crystal diffraction analysis confirmed the octahedral geometry of LnIII ion in both complexes. Magnetic studies showed that complex 1 exhibited single ion magnet (SIM) behavior with an effective energy barrier of 34.16 K. Ab initio calculations were performed to extract the magnetic relaxation dynamics of complexes 1 and 2.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Yidian Wang, Qian-Cheng Luo, Yuan-Qi Zhai, Peng-Bo Jin, Zhendong Fu, Qi Sun, Fan-Ni Li, Yan-Zhen Zheng
Summary: In this study, two dysprosium(III) single-molecule magnets (SMMs) were synthesized using a pseudoallyl ligand and pentamethylcyclopentadienyl. The SMMs exhibited distinct energy barriers.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Yidian Wang, Qian-Cheng Luo, Yuan-Qi Zhai, Peng-Bo Jin, Zhendong Fu, Qi Sun, Fan-Ni Li, Yan-Zhen Zheng
Summary: In this study, two dysprosium(III) single-molecule magnets (SMMs) were prepared using a pseudoallyl ligand, N,N'-chelating amidinate (Am), and pentamethylcyclopentadienyl (Cp*). The obtained SMMs, [{(AmiPr)-DyCp*(mu-Cl)}2] and [AmdippDyCp*(Cl)(mu-Cl)Li(THF)3], exhibited distinct energy barriers (Ueff) of 97 and 472 K, respectively, with the latter value similar to a homoleptic Cp*-based Dy-SMM.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Inorganic & Nuclear
Pradip Kumar Sahu, Arpan Mondal, Sanjit Konar
Summary: In this work, a new inorganic compound [{Co(H2O)(6)}(2+){Na4V10O28}(2-)] (1) with unique magnetic properties is reported. Experimental observations and ab initio calculations reveal the specific magnetic behavior of the compound in relation to the decavanadate polyanions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Tian-Tian Wang, Zi-Wei Che, Ji-Tun Chen, Han Yan, Teng-Da Zhou, Yi-Quan Zhang, Wen-Bin Sun
Summary: Two tetranuclear lanthanide complexes with different structures and magnetic properties were studied. One complex showed high energy barriers and stable hysteresis behavior, while the other complex exhibited magnetocaloric effect.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Fu-Sheng Guo, Mian He, Guo-Zhang Huang, Sean R. Giblin, David Billington, Frank W. Heinemann, Ming-Liang Tong, Akseli Mansikkamaki, Richard A. Layfield
Summary: This study investigates the effect of incorporating a phosphorus atom into a single-molecule magnet and finds two distinct high-temperature Orbach processes, providing experimental evidence for two different spin-phonon coupling regimes. Additionally, the single-molecule magnet exhibits magnetic hysteresis at high temperatures.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jeremy D. Hilgar, Maximilian G. Bernbeck, Jeffrey D. Rinehart
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Inorganic & Nuclear
Maximilian G. Bernbeck, Jeremy D. Hilgar, Jeffrey D. Rinehart
Article
Chemistry, Physical
Wei Cao, Alex J. Mantanona, Haochuan Mao, Naneki C. McCallum, Yang Jiao, Claudia Battistella, Valeria Caponetti, Nanzhi Zang, Matthew P. Thompson, Marco Montalti, J. Fraser Stoddart, Michael R. Wasielewski, Jeffrey D. Rinehart, Nathan C. Gianneschi
CHEMISTRY OF MATERIALS
(2020)
Review
Chemistry, Multidisciplinary
Wei Cao, Xuhao Zhou, Naneki C. McCallum, Ziying Hu, Qing Zhe Ni, Utkarsh Kapoor, Christian M. Heil, Kristine S. Cay, Tara Zand, Alex J. Mantanona, Arthi Jayaraman, Ali Dhinojwala, Dimitri D. Deheyn, Matthew D. Shawkey, Michael D. Burkart, Jeffrey D. Rinehart, Nathan C. Gianneschi
Summary: Melanin is a natural biomaterial with various functions found in living organisms, classified into different types based on chemical precursors. Despite its complexity and diversity in chemical structure, synthetic mimics have been used to study its structure-function relationships. Efforts are being made to elucidate biosynthetic pathways and characterize melanin materials for potential new opportunities in synthetic materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Maxime Tricoire, Luca Muenzfeld, Jules Moutet, Nolwenn Mahieu, Leo La Droitte, Eufemio Moreno-Pineda, Frederic Gendron, Jeremy D. Hilgar, Jeffrey D. Rinehart, Mario Ruben, Boris Le Guennic, Olivier Cador, Peter W. Roesky, Gregory Nocton
Summary: A series of lanthanide sandwich complexes ligated by cyclononatetraenyl and cyclooctatetraenyl ligands were reported, showing different coordination patterns in the solid state depending on the size of the corresponding lanthanide ion. Characterization in solid state and solution, static magnetic studies, and ab initio computational studies were conducted to explore their coordination behavior.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Kyle M. Kirkpatrick, Benjamin H. Zhou, Philip C. Bunting, Jeffrey D. Rinehart
Summary: In this study, two new forms of iron oleate precursor were characterized, which can lead to reproducible and predictable reactivity, and produce tunable iron oxide nanoparticles.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Angelica P. Orlova, Jeremy D. Hilgar, Maximilian G. Bernbeck, Milan Gembicky, Jeffrey D. Rinehart
Summary: This study discusses the impact of dipolar coupling on the slow relaxation dynamics in lanthanide-based single-molecule magnets and proposes design principles for multinuclear molecular magnetism.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Kyle M. Kirkpatrick, Benjamin H. Zhou, Philip C. Bunting, Jeffrey D. Rinehart
Summary: Magnetization is a measurable property of materials that provides information about their electronic structure, phase purity, and impurities. Superparamagnetism, a size-dependent property of magnetic materials, has been underexplored in the field of quantum materials. In this study, a statistical model is used to analyze a dataset of variable-size superparamagnetic Fe3O4 particles. The results show that parameters of the intrinsic probability distribution, such as the maximum susceptibility, are more suitable for describing the superparamagnetic behavior compared to standard measures like saturation magnetization. This analysis has potential applications in synthesis diagnostics and prediction of new properties and functionality.
Article
Chemistry, Multidisciplinary
Yijun Xie, Kelsey A. Krug, Kristine S. Cay, Mark Kalaj, Naneki C. McCallum, Zofia E. Siwicka, Zhao Wang, Nathan C. Gianneschi, Michael D. Burkart, Jeffrey D. Rinehart
Summary: Enzymes are a valuable source of inspiration for catalyst development due to their high catalytic activity and substrate specificity. The authors successfully synthesized a variant of L-DOPA polymer with high peroxidase-like activity by introducing mesoporosity and iron ion chelation. The polydopamine-based materials demonstrate strong potential as a versatile redox-catalysis platform, showing robustness and redox versatility despite redox changes and presence of radical species.
Article
Chemistry, Inorganic & Nuclear
Alex J. Mantanona, Daniel R. Tolentino, Kristine S. Cay, Milan Gembicky, Rodolphe Jazzar, Guy Bertrand, Jeffrey D. Rinehart
DALTON TRANSACTIONS
(2020)
Meeting Abstract
Chemistry, Multidisciplinary
Maximilian Bernbeck, Jeremy Hilgar, Jeffrey Rinehart
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Meeting Abstract
Chemistry, Multidisciplinary
Kristine Cay, Jeffrey Rinehart, Philip Bunting, Yijun Xie
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Engineering, Electrical & Electronic
Benjamin H. Zhou, Jeffrey D. Rinehart
ACS APPLIED ELECTRONIC MATERIALS
(2019)
Article
Chemistry, Physical
Jeremy D. Hilgar, Aaron K. Butts, Jeffrey D. Rinehart
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Materials Science, Biomaterials
Yijun Xie, Junxin Wang, James Wang, Ziying Hu, Ali Hariri, Nicholas Tu, Kelsey A. Krug, Michael D. Burkart, Nathan C. Gianneschi, Jesse V. Jokerst, Jeffrey D. Rinehart
JOURNAL OF MATERIALS CHEMISTRY B
(2019)
