Article
Chemistry, Multidisciplinary
James P. Durrant, Benjamin M. Day, Jinkui Tang, Akseli Mansikkamaki, Richard A. Layfield
Summary: Replacing the ligands in dysprosium single-molecule magnets with a different type leads to larger energy barriers to magnetization reversal. The distances between the ligands in the new complexes suggest a different crystal field splitting. Theoretical analysis shows that the magnetic axes in the ground Kramers doublets are oriented towards the new ligands. Introducing new parameters allows for comparisons between different single-molecule magnets, indicating the potential for improved performance in the new system.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Mamo Gebrezgiabher, Soeren Schlittenhardt, Cyril Rajnak, Juraj Kuchar, Assefa Sergawie, Juraj Cernak, Mario Ruben, Madhu Thomas, Roman Boca
Summary: A dinuclear dysprosium(III) complex with linked Dy(III) central atoms and coordinating ligands has been synthesized and characterized.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Jing Xi, Peipei Cen, Yan Guo, Yuzhu Li, Yuanyuan Qin, Yi-Quan Zhang, Weiming Song, Xiangyu Liu
Summary: The reversible single-crystal-to-single-crystal conversion of PBP Dy(III) complexes has been achieved, providing insights into the magnetic switches with fascinating transformation processes.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Cai-Ming Liu, Xiang Hao
Summary: A new Schiff base ligand was synthesized and used to react with different dysprosium(III) salts, resulting in the formation of two dysprosium cluster complexes with distinct structures. Both complexes exhibit promising magnetic properties.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Peng-Bo Jin, Ke-Xin Yu, Yuan-Qi Zhai, Qian-Cheng Luo, Yi-Dian Wang, Xu-Feng Zhang, Yi Lv, Yan-Zhen Zheng
Summary: Two dysprosium(III) complexes have been confirmed as single-molecule magnets, with the dimer showing enhanced magnetic relaxation barrier. Dilution experiments with the yttrium(III) analogue indicate the single-ion nature of the magnetic behavior.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Tetsu Sato, Brian K. Breedlove, Masahiro Yamashita, Keiichi Katoh
Summary: A one-dimensional arrangement of an unsubstituted partially oxidized Dy3+ double-decker complex was prepared, showing conductor behavior even at low temperatures. Spectrophotometric analysis revealed delocalization of pi radicals in a 1D column, contributing to the conductivity observed in the system.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Peng Hu, Ling-hui Cao, Ao-gang Liu, Yi-quan Zhang, Tian-le Zhang, Bao Li
Summary: Two dysprosium clusters, a dinuclear and a nonanuclear one, were successfully synthesized and showed adjustable magnetic relaxation dynamics through changes in ligands.
DALTON TRANSACTIONS
(2021)
Article
Multidisciplinary Sciences
A. Singha, P. Willke, T. Bilgeri, X. Zhang, H. Brune, F. Donati, A. J. Heinrich, T. Choi
Summary: Atomic scale engineering of magnetic fields is crucial for miniaturizing quantum devices and precise control of quantum systems. Surface-supported single atom magnets with a giant magnetic anisotropy energy exhibit long-term stability of spin states at low temperatures. Dy adsorbed onto MgO shows a high MAE and a life time of several days at low temperatures, making it a promising candidate for magnetic nanostructures.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Tian Han, You-Song Ding, Marcus J. Giansiracusa, Nicholas F. Chilton, Richard E. P. Winpenny, Yan-Zhen Zheng
Summary: Two dichloride-bridged dinuclear dysprosium(III) complexes based on salen ligands, [Dy(L-1)(mu-Cl)(thf)](2) and [Dy-2(L-2)(2)(mu-Cl)(2)(thf)(2)], were reported. Complex 2 showed clear slow relaxation of the magnetization due to the two short Dy-O-(PhO) bonds with an angle of approximately 143 degrees, while complex 1 exhibited slower relaxation due to an angle of around 90 degrees. The structural difference in the relative angles of the two O-(PhO)-Dy-O-(PhO) vectors in these complexes resulted in significant differences in their dipolar ground states, leading to open magnetic hysteresis in complex 3 and not in complex 2.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Lewis R. Thomas-Hargreaves, David Hunger, Michal Kern, Ashley J. Wooles, Joris van Slageren, Nicholas F. Chilton, Stephen T. Liddle
Summary: In this study, the synthesis of a lanthanide-(bis)boryloxide complex with idealized D-4h@Dy(iii) point-group symmetry was reported. The complex exhibits single-molecule magnetism with one of the highest energy barriers among six-coordinate lanthanide-SMM systems. The validation of electrostatic model predictions by complex 2Dy informs future design of lanthanide-SMMs.
CHEMICAL COMMUNICATIONS
(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
Xiao-Jiao Song, Yu Jing, Xin Feng, Zhao-Bo Hu, Ming Kong, Xiao-Ming Xue, Yi-Quan Zhang, You Song
Summary: A new dinuclear complex Dy2L2(H2L)Cl-2(EtOH)2 has been synthesized and its magnetic behaviors have been studied. Multiple and intricate relaxation pathways have been observed, which differ from previous literature reports.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Rute A. S. Ferreira, Ekaterina Mamontova, Alexandre M. P. Botas, Mikhail Shestakov, Johan Vanacken, Victor Moshchalkov, Yannick Guari, Liviu F. Chibotaru, Dominique Luneau, Paulo S. Andre, Joulia Larionova, Jerome Long, Luis D. Carlos
Summary: Sensors are becoming more prevalent in various technological applications, with the challenge of engineering smart systems capable of detecting multiple physical quantities simultaneously. Using molecular chemistry, it has been shown that a luminescent single-molecule magnet can act as a dual thermometric/magnetic optical sensor, holding promise for detecting variations in future devices.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yun-Lan Li, Zhong-Ming Huang, Hai-Ling Wang, Zhong-Hong Zhu, Fu-Pei Liang, Hua-Hong Zou
Summary: This study synthesized two Dy-8 clusters with opposite framework structures and revealed their excellent molecular magnetic properties. The self-assembly process of the clusters was successfully tracked using HRESI-MS, and a possible self-assembly mechanism was proposed.
Article
Chemistry, Physical
Hao Sun, Ying Guo, Yanfeng Cui, Dawei Li, Gaocheng Yang, Yeye She, Qian Zhang, Yahong Li, Yi-Quan Zhang, Jinlei Yao
Summary: Two trinuclear complexes, [Dy3(mu 3-H2O)(hmp)3(CH3COO)3] (1) and [Gd3(mu 3-H2O)(hmp)3(CH3COO)3] (2), were synthesized and their crystal structures and magnetic properties were investigated. Complex 1 exhibits field-induced single-molecule magnet behavior, while complex 2 shows weak antiferromagnetic interactions.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Qian-Cheng Luo, Ning Ge, Yuan-Qi Zhai, Tengbo Wang, Lin Sun, Qi Sun, Fanni Li, Zhendong Fu, Yan-Zhen Zheng
Summary: Two erbium(III) complexes, [ErCl(OArAd)3][Na(THF)6] (1) and Er(OArAd)3 (2), were prepared using a hard base ligand with large steric hindrance. The change in coordination geometry around the Er(III) site from distorted tetrahedral to flat trigonal pyramid geometry in different solvent environments enhanced the single-molecule magnet (SMM) behavior, with a field-induced effective energy barrier (Ueff) of 43(1) cm -1 for the latter. The study demonstrates the importance of a strong equatorial ligand field and high local symmetry in suppressing quantum tunneling of the magnetization (QTM) to achieve high-performance erbium(III)-based SMMs.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Tianjiao Xue, You-Song Ding, Daniel Reta, Qi-Wei Chen, Xiaofei Zhu, Zhiping Zheng
Summary: In this study, three new single-molecule magnets (SMMs) were reported for potential applications in information storage and quantum processing. These SMMs demonstrated similar magnetic properties but distinct quantum tunnelling of magnetization (QTM) relaxation times, suggesting the influence of nonmagnetic components and crystal environment on the behavior of SMMs.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Inorganic & Nuclear
Alessandro Soncini, Richard A. Mole, Colette Boskovic, Aiden M. Atkin, Marcus J. Giansiracusa, Simone Calvello, Elodie Rousset, Robert W. Gable, Wasinee Phonsri, Keith S. Murray, James K. Howard
Summary: Recent advances in single-molecule magnet research have focused on the interpretation of inelastic neutron scattering data for rare earth-containing SMMs. This study presents the synthesis of rare earth complexes and their magnetic and INS studies, supported by ab initio calculations. The static magnetic properties and crystal field excitations of the compounds were investigated, and the INS spectra and magnetic behavior were interpreted using ab initio calculations and high-resolution INS measurements.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Qian-Wen Li, Le-Yu Bi, Mohamed Saber Lassoued, Qian-Cheng Luo, Rong Yan, Xin-Kai Ding, Gao-Yang Gou, Yan-Zhen Zheng
Summary: In this study, stable lead-free hybrid halide double perovskites incorporating copper and antimony were successfully synthesized. These two-dimensional perovskites exhibited small band gaps, high solubility in organic solvents, and could form smooth and uniform thin films. Furthermore, they showed excellent photoelectric responses and high moisture and thermal stabilities, suggesting their potential for optoelectronic applications.
Article
Engineering, Chemical
Shao-Min Wang, Hao-Ran Liu, Su-Tao Zheng, Hao-Ling Lan, Qing-Yuan Yang, Yan-Zhen Zheng
Summary: This study successfully designed and synthesized ethane-selective adsorbents for ethylene purification using crystal engineering strategy. Among them, Co-9-ina exhibited the highest C2H6/C2H4 selectivity and adsorption capacity. Theoretical calculations and experimental results demonstrated that pyridine rings have stronger van der Waals interactions with ethane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Yan-Zhen Zheng, Yu-Xin Jiang, Yu Zhou, Yu-Cang Zhang
Summary: The microstructural features of dimethyl carbonate (DMC)-ethanol azeotrope mixtures were studied using FTIR and DFT. It was found that different IL concentrations can break the DMC-ethanol interaction complex, leading to the separation of the azeotrope. The strength and nature of hydrogen bonds between DMC/IL and ethanol were also evaluated.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Tian Han, You-Song Ding
Summary: A complex with a dysprosium ion coordinated by two bulky chelating silyldiamide ligands was synthesized and characterized. The coordination geometry allowed slow magnetic relaxation up to 42 K, making it the first silyldiamido dysprosium single-molecule magnet.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Zhendong Fu, Zhong-Wen Ouyang, Qian-Cheng Luo, Yan-Zhen Zheng, Wei Tong, Huanpeng Bu, Hanjie Guo, Jin-Kui Zhao
Summary: In this study, the magnetism of Cr8Y8 was investigated using high-frequency electron spin resonance (HF-ESR) method. It was confirmed that Cr8Y8 has an S = 12 ground state and a zero-field splitting (ZFS) due to axial magnetic anisotropy. The validity of the macrospin model was also demonstrated. This research contributes to a deeper understanding of the magnetism of Cr8Y8 and highlights the importance of the HF-ESR method in determining ZFS parameters with very small magnitude.
Article
Chemistry, Multidisciplinary
Tian Han, You-Song Ding, Marcus J. Giansiracusa, Nicholas F. Chilton, Richard E. P. Winpenny, Yan-Zhen Zheng
Summary: Two dichloride-bridged dinuclear dysprosium(III) complexes based on salen ligands, [Dy(L-1)(mu-Cl)(thf)](2) and [Dy-2(L-2)(2)(mu-Cl)(2)(thf)(2)], were reported. Complex 2 showed clear slow relaxation of the magnetization due to the two short Dy-O-(PhO) bonds with an angle of approximately 143 degrees, while complex 1 exhibited slower relaxation due to an angle of around 90 degrees. The structural difference in the relative angles of the two O-(PhO)-Dy-O-(PhO) vectors in these complexes resulted in significant differences in their dipolar ground states, leading to open magnetic hysteresis in complex 3 and not in complex 2.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Jonatan B. Petersen, You-Song Ding, Sandeep Gupta, Aditya Borah, Eric J. L. McInnes, Yan-Zhen Zheng, Ramaswamy Murugavel, Richard E. P. Winpenny
Summary: In this study, the zero-field splitting (ZFS) of Gd3+ pentagonal bipyramidal complexes was investigated to understand the mechanisms of ground state splitting. The results showed that the ZFS is dominated by the B20 term, which is inversely proportional to the donor strength of the axial ligands. Additionally, the magnitude of B20 was found to be inversely proportional to the thermal barrier for the reversal of the magnetic moment of the corresponding isostructural Dy3+ complexes.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuzhu Li, Zhaopeng Zeng, Yan Guo, Xingman Liu, Yi-Quan Zhang, Zhongwen Ouyang, Zhenxing Wang, Xiangyu Liu, Yan-Zhen Zheng
Summary: A novel CrII-dimeric complex has been constructed using a bulky silyl-amide ligand. The crystal structure analysis reveals a binuclear motif with two equivalent tetra-coordinate CrII centers displaying quasi-square planar geometry. Magnetic studies and theoretical calculations indicate the presence of slow dynamic magnetic relaxation and a non-negligible ferromagnetic coupling in the dimeric Cr-Cr units.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Marcus J. Giansiracusa, Michele Vonci, Yasmin L. Whyatt, Carys Williams, Kevin Mason, David Parker, Eric J. L. McInnes, Nicholas F. Chilton
Summary: EPR spectroscopy is used to show that a t-butyl-pyridyl-functionalised Er-III DOTA derivative coordinates water, while its methylphosphinate analogue does not.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Maja A. Dunstan, Marcus J. Giansiracusa, Michele Vonci, Simone Calvello, Dehong Yu, Alessandro Soncini, Colette Boskovic, Richard A. Mole
Summary: In this study, we show for the first time that magnetic relaxation times and mechanisms can be directly observed as crystal field peak broadening in inelastic neutron scattering (INS) spectra. By measuring both crystal field excitations and phonon density of states, we are able to determine the magnetoelastic coupling between the lower energy crystal field states and phonons. This information is crucial for the advancement of single-molecule magnets (SMMs) and has previously only been obtained in external magnetic fields. Additionally, we find a relaxation rate of quantum-tunnelling of magnetisation consistent with previous EPR spectroscopy data.
Article
Chemistry, Multidisciplinary
Jayasree Kumar, Ibtesham Tarannum, Yan-Zhen Zheng, Saurabh Kumar Singh, Kartik Chandra Mondal
Summary: This study investigates the influence of various ligands on the structures and reactions of coordination compounds with Mn(III) ions. The resulting complexes exhibit different nuclearities and magnetic properties.
Article
Chemistry, Inorganic & Nuclear
Mohamed Saber Lassoued, Qian-Cheng Luo, Yan-Zhen Zheng
Summary: A new 3D lead chloride hybrid, (H2MPP)2Pb5Cl14, has been isolated, which exhibits broadband emission with a large Stokes shift and a high color rendering index (CRI), mainly attributed to the self-trapped exciton mechanism (STE). It also shows higher stability under moisture, UV light and heat.
INORGANIC CHEMISTRY FRONTIERS
(2023)
