Article
Chemistry, Physical
Yang Zhou, Run-Zhuo Yao, Xingwei Cai, Zhenxing Wang, Peipei Cen, Yong Yang, Aihua Yuan, Yisong Tang, Xiaoyun Chen, Shuanhong Zhang, Zhong-Wen Ouyang, Lei Chen
Summary: Soft donor ligands play a critical role in the construction of 3d transition-metal complexes with large magnetic anisotropy. In this study, a soft tripodal ligand was used to construct a high-spin mononuclear complex, which exhibited single-molecule magnet behavior.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Applied
Cai-Ming Liu, Xiang Hao, De-Qing Zhang
Summary: Two new Zn(II)-Dy(II) complexes exhibit rare magnetic properties with a NO(7) triangular dodecahedral coordination sphere, showing field-induced single-molecule magnet behavior. Among them, complex 2 has a higher energy barrier value compared to the Dy(III) complexes reported in the literature with the DyNO(7) triangular dodecahedral coordination configuration.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Review
Chemistry, Inorganic & Nuclear
Yun-Xia Qu, Pei-Yu Liao, Yan-Cong Chen, Ming-Liang Tong
Summary: This article reviews the coordination chemistry, single-molecule magnetism, and optical properties of lanthanide complexes based on the hexadentate mixed ligand H2bbpen, aiming to find relevant correlations between magnetic and optical structures to promote further developments in this family and related systems.
COORDINATION CHEMISTRY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Liu Kang, Guo Yan, Yu Jipan, Shi Weiqun
Summary: Single molecule magnets are magnetic materials composed of a single molecule, with magnetism deriving from the magnetic moment of a single molecule. They are expected to have applications in ultra-high density storage, quantum computers, spintronics, and other fields. Actinide single molecule magnets have attracted increasing attention due to the strong spin-orbit coupling effect and large radial extension of 5f electrons of actinides, showing potential to outperform transition metal and lanthanide complexes in terms of magnetism. However, the relaxation mechanism and factors behind slow magnetic behavior in actinide single molecule magnets remain unclear. This review summarizes the reported actinide single molecule magnets of the past decade, finding inconsistencies between experimental and theoretical values of blocking barriers, which have limited the development of actinide single molecule magnets to some extent. Finally, future research directions for actinide single molecule magnets are proposed.
ACTA CHIMICA SINICA
(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
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, Physical
Maristella Alessio, Anna Krylov
Summary: The study introduces a new computational protocol for calculating the macroscopic magnetic properties of transition-metal complexes, demonstrating excellent performance in describing magnetic behavior and explaining trends in magnetic anisotropy and spin-reversal energy barriers.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2021)
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, Inorganic & Nuclear
Li Zhu, Yubao Dong, Bing Yin, Pengtao Ma, Dongfeng Li
Summary: By introducing specific functional groups into the molecular structure, the magnetic anisotropy and single-molecule magnet behavior of the compounds were successfully regulated, enhancing their magnetic properties. Both experimental and ab initio calculation results confirm that the simultaneous introduction of electron-withdrawing and electron-donating groups can lead to improved properties of the PBP Dy-SMMs.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Maria Brzozowska, Gabriela Handzlik, Katarzyna Kurpiewska, Mikolaj Zychowicz, Dawid Pinkowicz
Summary: The study found that the magnetization dynamics of neutral pseudo-tetrahedral Er-III single molecule magnets are mainly controlled by the Raman-like relaxation mechanism in a specific temperature and frequency range, which is uncommon in the field of Ln-based single molecule magnets. By comparing Er-III single molecule magnets with different coordination structures, it was discovered that adding an additional spin to the ligand of an Er-III complex completely disrupts the slow magnetization dynamics of the parent compound.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Review
Chemistry, Inorganic & Nuclear
Cyril Rajnak, Roman Boca
Summary: The thermal behavior of some mononuclear transition metal and lanthanide complexes shows a non-traditional pattern where the relaxation time at low temperatures shortens instead of prolonging. The relaxation time in the low-temperature range can be recovered using equations and processes involving phonon bottleneck and unusual behavior.
COORDINATION CHEMISTRY REVIEWS
(2021)
Review
Chemistry, Multidisciplinary
Jana Jurakova, Ivan Salitros
Summary: This paper introduces Magnetoactive coordination compounds that exhibit bi- or multistability and serve as molecular switches. Specifically, it focuses on single molecule magnets (SMMs) that show slow relaxation of magnetization based on purely molecular origin. Unlike ferromagnets, SMMs do not require intermolecular interactions for their magnetic bistability, making them attractive for high-density data storage. The paper provides an overview of Co(II) SMMs, emphasizing the relationship between structural features, magnetic anisotropy, and slow relaxation of magnetization in tetra-, penta-, and hexacoordinate complexes.
MONATSHEFTE FUR CHEMIE
(2022)
Article
Chemistry, Inorganic & Nuclear
Fabio Manna, Mariangela Oggianu, Narcis Avarvari, Maria Laura Mercuri
Summary: Lanthanide metal-organic frameworks (Ln-MOFs) with single-molecule magnet (SMM) properties are a growing family of materials where magnetic properties can be controlled by interrelated parameters, such as solvent, temperature, organic linkers, lanthanide ions, and coordination environment. This overview discusses synthetic methods for accessing MOFs/Ln-MOFs and controlling/fine-tuning their SMM behavior. It also explores challenging strategies for inducing SMM/SIM behavior, including redox activity and chirality, as well as intriguing physical phenomena such as the CISS effect and CPL.
Article
Chemistry, Multidisciplinary
Francielli S. Santana, Mauro Perfetti, Matteo Briganti, Francesca Sacco, Giordano Poneti, Enrico Ravera, Jaisa F. Soares, Roberta Sessoli
Summary: The article presents a dysprosium complex that is chemically designed to exhibit strong easy-axis type magnetic anisotropy preserved in dichloromethane solution at room temperature. The detailed theoretical and experimental studies explain the typical features of highly performant single molecule magnets (SMMs). The NMR characterization shows remarkably large chemical shifts, outperforming the current state-of-the-art pseudocontact shift (PCS) tags.
Article
Chemistry, Multidisciplinary
Jin-Fen Chen, Yi-Liang Ge, Dong-Hui Wu, Hao-Tian Cui, Zhi-Lin Mu, Hong-Ping Xiao, Xinhua Li, Jing-Yuan Ge
Summary: A new dysprosium (III) coordination polymer has been successfully synthesized and its properties were studied. The results demonstrate that the polymer exhibits good magnetism, proton conduction, and luminescence, making it a potential multifunctional material.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Chen-Guang Shi, Jian-Hua Jia, Yaling Jia, Guangqin Li, Ming-Liang Tong
Summary: Atomically precise silver nanoclusters play a key role in crystallography and coordination chemistry. In this study, silver nanoclusters with high catalytic activity and excellent electrocatalytic oxygen reduction performance were developed, supported on activated carbon. This work provides an example for the study of large sized metal nanoclusters and nanocluster-based electrocatalysts.
Article
Chemistry, Inorganic & Nuclear
Wei-Wei Wu, Kai-Ping Xie, Guo-Zhang Huang, Ze-Yu Ruan, Yan-Cong Chen, Si-Guo Wu, Zhao-Ping Ni, Ming-Liang Tong
Summary: Linkage isomers and spin-crossover compounds have potential applications in data storage. A new spin-crossover compound with aging and temperature dependence is synthesized, and the thermal-induced cyanide linkage isomerization process is revealed.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Si-Guo Wu, Long-Fei Wang, Ze-Yu Ruan, Shan-Nan Du, Silvia Gomez-Coca, Zhao-Ping Ni, Eliseo Ruiz, Xiao-Ming Chen, Ming-Liang Tong
Summary: In this study, a rare cationic metal-organic framework with hysteretic spin-crossover behavior and redox-programmable capability is reported. The stepwise spin-crossover dynamics can be manipulated by chemical redox reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Chemistry, Inorganic & Nuclear
Yun-Xia Qu, Pei-Yu Liao, Yan-Cong Chen, Ming-Liang Tong
Summary: This article reviews the coordination chemistry, single-molecule magnetism, and optical properties of lanthanide complexes based on the hexadentate mixed ligand H2bbpen, aiming to find relevant correlations between magnetic and optical structures to promote further developments in this family and related systems.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Inorganic & Nuclear
Pei-Yu Liao, Yang Liu, Ze-Yu Ruan, Hai-Ling Wang, Chen-Guang Shi, Si-Guo Wu, Jian-Hua Jia, Wei Deng, Ming-Liang Tong
Summary: In this study, a series of photochromic rare-earth complexes were synthesized using hexaazamacrocyclic ligand LN6, and the photogenerated radicals of the ligands were revealed for the first time. The complexes 1-Ln showed photochromic behavior upon 365 nm light irradiation, induced by the photo-generated radicals. Static and dynamic magnetic studies showed weak ferromagnetic interactions among DyIII ions and photogenerated LN6 radicals in 1-Dy and its irradiated product 1-Dy*. Time-dependent fluorescence measurements demonstrated the quenching dynamics of lanthanide in the photochromic process, with a high quenching efficiency in the irradiated product 1-Eu*.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Ze-Yu Ruan, Jia-Jun Lai, Jia-Xin Li, Xiao-Jun Zhao, Guo-Zhang Huang, Si-Guo Wu, Jun-Liang Liu, Ming-Liang Tong
Summary: We investigated the temperature-dependent variation of the best-performance field in a trinuclear 3d-4f single-molecule magnet {DyNi2} with a simple magnetic structure. A concise model was proposed to explain the origin of this anomalous phenomenon and reveal the influence of the energy structure on the field and temperature dependence of the relaxation time. The competition between relaxation processes with different tunneling splittings in the ground states and excited states under an applied magnetic field leads to the enigmatic phenomena.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Hai-Ling Wang, Donglin Liu, Jian-Hua Jia, Jun-Liang Liu, Ze-Yu Ruan, Wei Deng, Shiping Yang, Si-Guo Wu, Ming-Liang Tong
Summary: Researchers have successfully synthesized two highly stable high-nuclear lanthanide clusters (Ho-32 and Gd-32) that show excellent imaging effects in MRI. These clusters can replace traditional gadolinium chelates as contrast agents, avoiding the use of high doses of gadolinium contrast agents.
NATIONAL SCIENCE REVIEW
(2023)
Review
Chemistry, Inorganic & Nuclear
Shan-Nan Du, Chan-Ying Yao, Jun-Liang Liu, Ming-Liang Tong
Summary: Magnetically switchable molecular solids with stimuli-responsive ON/OFF characteristics hold promise for smart switches and magnetic storage. In addition to conventional spin-crossover/charge-transfer materials, peripheral chemical entities that exhibit tunability provide an alternative and promising approach for constructing magnetic multi-stable materials. Temperature-induced reversible structural phase transitions can potentially realize magnetic bistability by affecting the coordination environment of a transition-metal center.
Article
Chemistry, Multidisciplinary
Guang Yang, Si-Guo Wu, Ze-Yu Ruan, Yan-Cong Chen, Kai-Ping Xie, Zhao-Ping Ni, Ming-Liang Tong
Summary: This study reports the synthesis of two spin crossover metal-organic frameworks (MOFs) with cluster building blocks. The removal of the cluster greatly modifies the spin state and fluorescence properties, providing new ideas for the design of spin crossover systems and the development of post-synthetic modification methods.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Bang-Heng Lyu, Ze-Yu Ruan, Wen Cui, Si-Guo Wu, Zhao-Ping Ni, Ming-Liang Tong
Summary: We report an inverse-Hofmann-type metal-organic framework with hysteretic spin crossover behavior. The redox-active unit in the framework can be regulated by successive redox reactions in the spin crossover field, providing a platform for developing multi-responsive materials.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Bang-Heng Lyu, Ze-Yu Ruan, Wen Cui, Si-Guo Wu, Zhao-Ping Ni, Ming-Liang Tong
Summary: In this study, an inverse-Hofmann-type metal-organic framework (MOF) material [Fe-II(TPPE){Au-I(CN)(2)}]I.2H(2)O.7TCE with hysteretic spin crossover (SCO) behavior was reported. The redox-active unit [Au-I(CN)(2)](-) in the material can be oxidized by I-2 and Br-2 to form [Au-III(CN)(2)X-2](-) units via single-crystal to single-crystal transformation, and then reduced to [Au-I(CN)(2)](-) by l-ascorbic acid (AA). This study provides a platform for developing multi-responsive materials by regulating the SCO behavior through successive redox reactions.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Inorganic & Nuclear
Ming Liu, Xiao-Han Peng, Fu-Sheng Guo, Ming-Liang Tong
Summary: Significant progress has been made in single-molecule magnets (SMMs) in recent years, with the milestone achievement of hysteresis blocking temperature surpassing the boiling point of liquid nitrogen. Although our understanding of constructing high-performance rare-earth SMMs has improved, there are few successful SMMs reported for actinides that possess stronger spin-orbital coupling. The review summarizes the progress on actinide SMMs and examines potential future directions.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Hong-Dao Li, Si-Guo Wu, Ming-Liang Tong
Summary: In the field of molecular magnetism, the Ln-Rad method has become a popular strategy for introducing strong magnetic interactions, leading to the development of heterospin single-molecule magnets (SMMs). This article provides a timely review of the research progress in Ln-Rad heterospin systems, focusing on low dimensional compounds with SMM behavior, such as nitrogen-based radicals, semiquinone, and nitroxide radicals. The study highlights the rational design, molecular structures, magnetic behaviors, and magneto-structural correlations. Furthermore, the influence of exchange couplings on the dynamic magnetic properties is discussed to guide the future design of radical-based Ln-SMMs.
CHEMICAL COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Guo-Zhang Huang, Peng-Xu Lu, Meng-Meng Zeng, Wei Deng, Kai-Ping Xie, Zhen-Xing Wang, Jun-Liang Liu, Yan-Cong Chen, Ming-Liang Tong
Summary: By incorporating diprotonated terpyridine cations and hexacyanometalate(iii) anions into supramolecular hybrid salts, room temperature photoinduced electron transfer (PET) was achieved involving a[M-III(CN)(6)](3-) ion. Characterization of Co analogue showed unprecedented light-induced off -> on magnetization and slow magnetic relaxation behavior, paving a promising way for photo-responsive multifunctional molecular materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Tao Li, Jia-Chuan Liu, En-Ping Liu, Bai-Tong Liu, Jing-Yu Wang, Pei-Yu Liao, Jian-Hua Jia, Yuanning Feng, Ming-Liang Tong
Summary: This study investigates the potential of a cocrystal incorporating TTF and TCPDA components in the field of NIR-II photothermal. Through experimental and theoretical analysis, it is found that the twisted conformation in the cocrystal and intermolecular charge transfer can achieve efficient photothermal conversion. The research results are significant for the development of high-performance organic NIR-II photothermal materials.
