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482 results on '"Wang, Bing-Wu"'

4. A phase III randomized, double-blind, placebo-controlled trial of the denosumab biosimilar QL1206 in postmenopausal Chinese women with osteoporosis and high fracture risk

Author

Zhang, Hao, Gu, Jie-mei, Chao, Ai-jun, Cheng, Qun, Teng, Dong-hui, Yu, Jin-ming, Wang, Bing-wu, Huo, Ya-nan, Mao, Li, Zhang, Qiu, Yang, Hong, Yan, Shi-gui, Zhang, Ke-qin, Zhao, Xue-ling, Lin, Hua, Pei, Yu, Yuan, Zhong, Dai, Ru-chun, He, Liang, Chen, Li, Su, Yong-feng, Deng, Zhong-liang, You, Li, Ban, Bo, Zhu, Mei, Cao, You-liang, Zhu, Yi-kun, Li, Zhi-jun, Zhang, Zhi, Yi, Cheng-qing, Lu, Yi-bing, Wang, Guang, Han, Cui-cui, Wang, Zhen-jiang, Li, Xian-xing, and Zhang, Zhen-lin

Published
2023
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5. Robot Path Planning Based on Improved Potential Field Method

Author

WANG Bing, WU Hong-liang, NIU Xin-zheng

Subjects
artificial potential field, path planning, virtual target point, path optimization strategy, parameter optimization, Computer software, QA76.75-76.765, Technology (General), T1-995
Abstract

Aiming at the problems of excessive gravity,local minimum point,unreachable target,trapped areas in traditional artificial potential field(APF) method,an improved potential field method based on path optimization strategy and parameter optimization is proposed.Firstly,a gravitational compensation gain coefficient is used to avoid the problem of excessive gravity.Secondly,the virtual target point setting strategy is used to solve the problem of local minimum point according to environmental information.The observation distance is set to identify the distribution of obstacles and different path strategies are selected to avoid unreachable target.Moreover,robot rotates in advance to move tangentially away from this area or uses a safe path to pass through the area.Finally,the differential evolution algorithm is used to solve the constrained optimization problem,so that the initialization parameters of artificial potential field method are no longer set based on experience.Simulation experiments show that the improved potential field method can effectively solve problems such as local minimums and unreachable targets.Compared with the traditional artificial potential field,the path length of the improved algorithm reduces by 17.5%.

Published
2022
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6. A Co(II)-based Molecular Magnet with a 6 T Coercive Field

Author

Liu, Xiaoqing, Feng, Xiaowen, Zhang, Yuan, Zhang, Xuejing, Gao, Chen, Liu, Jun-Liang, Wang, Bing-Wu, Pedersen, Kasper S., Keller, Lukas, Zhang, Yi-Quan, Shi, Wei, Gao, Song, Cheng, Peng, and Long, Jeffrey R.

Subjects
Physics - Chemical Physics
Abstract

Hard magnets with high coercivity, such as Nd2Fe14B and SmCo5 alloys, can maintain magnetisation under a high reverse external magnetic field and have therefore become irreplaceable parts in many practical applications. Molecular magnets are promising alternatives, owing to their precise and designable chemical structures, tuneable functionalities and controllable synthetic methods. Here, we demonstrate that an unusually large coercive field can be achieved in a single-chain magnet. Systematic characterisations, including magnetic susceptibility, heat capacity and neutron diffraction measurements, show that the observed giant coercive field originates from the spin dynamics along the one-dimensional chain of the compound because of the strong exchange coupling between Co(II) centres and radicals., Comment: We find some problems in the manuscript, so we have to withdraw it. We may submit a new version later

Published
2017

11. Single-Ion Anisotropy: An Insight to Complicated Magnetic Molecules

Author

Jiang, Shang-Da, Wang, Bing-Wu, Gao, Song, Beller, Matthias, Series Editor, Dixneuf, Pierre H., Series Editor, Dupont, Jairton, Series Editor, Fürstner, Alois, Series Editor, Glorius, Frank, Series Editor, Gooßen, Lukas J., Series Editor, Nolan, Steven P., Series Editor, Okuda, Jun, Series Editor, Oro, Luis A., Series Editor, Willis, Michael, Series Editor, Zhou, Qi-Lin, Series Editor, Chandrasekhar, Vadapalli, editor, and Pointillart, Fabrice, editor

Published
2019
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13. Influence of Guest Exchange on the Magnetization Dynamics of Dilanthanide Single‐Molecule‐Magnet Nodes within a Metal–Organic Framework

Author

Zhang, Xuejing, Vieru, Veacheslav, Feng, Xiaowen, Liu, Jun‐Liang, Zhang, Zhenjie, Na, Bo, Shi, Wei, Wang, Bing‐Wu, Powell, Annie K, Chibotaru, Liviu F, Gao, Song, Cheng, Peng, and Long, Jeffrey R

Subjects
Inorganic Chemistry, Chemical Sciences, ab initio calculations, host-guest systems, lanthanides, metal-organic frameworks, single-molecule magnets, Organic Chemistry, Chemical sciences
Abstract

Multitopic organic linkers can provide a means to organize metal cluster nodes in a regular three-dimensional array. Herein, we show that isonicotinic acid N-oxide (HINO) serves as the linker in the formation of a metal-organic framework featuring Dy2 single-molecule magnets as nodes. Importantly, guest solvent exchange induces a reversible single-crystal to single-crystal transformation between the phases Dy2(INO)4(NO3)2⋅2 solvent (solvent=DMF (Dy2-DMF), CH3CN (Dy2-CH3CN)), thereby switching the effective magnetic relaxation barrier (determined by ac magnetic susceptibility measurements) between a negligible value for Dy2-DMF and 76 cm(-1) for Dy2-CH3CN. Ab initio calculations indicate that this difference arises not from a significant change in the intrinsic relaxation barrier of the Dy2 nodes, but rather from a slowing of the relaxation rate of incoherent quantum tunneling of the magnetization by two orders of magnitude.

Published
2015

14. Honeycomb Heisenberg Spin Ladder: Unusual Ground State and Thermodynamic Properties

Author

Zhao, Yang, Li, Wei, Xi, Bin, Ran, Shi-Ju, Zhu, Yuan-Yuan, Wang, Bing-Wu, Gao, Song, and Su, Gang

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

The unusual ground state and thermodynamic properties of spin-1/2 two-leg honeycomb (HC) spin ladder are systematically studied by jointly utilizing various analytical and numerical methods. The HC spin ladder is found to exhibit behaviors dramatically different from those of the conventional square spin ladder. A strong relevant term nJ and a half saturation magnetization plateau that can be attributed to the formation of diluted dimer states are observed in the HC ladder, both of which are absent in the square ladder. The ground state phase diagram of the HC spin ladder is identified, and the thermodynamic properties of the specific heat and susceptibility for different couplings are thoroughly explored, where two kinds of excitations are unveiled. The distinct Wilson ratios for both spin ladders at the lower critical fields are also obtained. Our calculated result is well fitted to the experimental data of the two-leg HC spin ladder compound [Cu2L1(N3)4]n., Comment: 5 pages, 6 figures

Published
2013
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16. Slow magnetic relaxation in 8-coordinate Mn(II) compounds.

Author

Wang, Li-Xin, Wu, Xiao-Fan, Jin, Xin-Xin, Li, Jia-Yi, Wang, Bing-Wu, Liu, Ji-Yan, Xiang, Jing, and Gao, Song

Subjects
MAGNETIC relaxation, TRANSITION metal complexes, SINGLE molecule magnets, X-ray crystallography, MAGNETIC properties, ATOMS, CRYSTAL structure
Abstract

The design and synthesis of high-spin Mn(II)-based single-molecule magnets (SMMs) have not been well developed to a great extent, as compared with a large number of SMMs based on the other first row transition metal complexes. In light of our success in designing Fe(II), Co(II) and Fe(III)-based SMMs with a high coordination number of 8, it is of great interest to design Mn(II) analogues with such a strategy. In this contribution, four Mn(II) compounds, [MnII(Ln)2](ClO4)2 (1–4) were obtained from reactions of neutral tetradentate ligands, L1–L4, with hydrated MnII(ClO4)2 (L1 = 2,9-bis(carbomethoxy)-1,10-phenanthroline, L2 = 2,9-bis(carbomethoxy)-2,2′-dipyridine, L3 = N2,N9-dibutyl-1,10-phenanthroline-2,9-dicarboxamide, L4 = 6,6′-bis(2-(tert-butyl)-2H-tetrazol-5-yl)-2,2′-bipyridine). Their crystal structures have been determined by X-ray crystallography and it clearly shows that the Mn(II) centers in these compounds have an oversaturated coordination number of 8. Their magnetic properties have been investigated in detail; to our surprise, all of these Mn(II) compounds show interesting slow magnetic relaxation behaviors under an applied direct current field, although they have very small negative D values. [ABSTRACT FROM AUTHOR]

Published
2023
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19. Two Pairs of Homochiral Parallelogram-like Dy4Cluster Complexes with Strong Magneto-Optical Properties

Author

Liu, Cai-Ming, Sun, Rong, Hao, Xiang, and Wang, Bing-Wu

Abstract

Two pairs of homochiral Dy(III) tetranuclear cluster complexes derived from (+)/(−)-3-trifluoroacetyl camphor (D-Htfc/L-Htfc), [Dy4(OH)2(L1)4(D-tfc)2(DMF)2]·4DMF (D-1) [H2L1 = (E)-2-(2-hydroxy-3-methoxybenzylideneamino)phenol)]/[Dy4(OH)2(L1)4(L-tfc)2(DMF)2]·4DMF (L-1) and [Dy4(OH)2(L2)4(D-tfc)2(DMF)2]·2H2O·3MeCN (D-2) [H2L2 = (E)-3-(2-hydroxy-3-methoxybenzylideneamino)naphthalen-2-ol]/[Dy4(OH)2(L2)4(L-tfc)2(DMF)2]·2H2O·3MeCN (L-2), were synthesized at room temperature, which have a Dy4parallelogram-like core. The magnetic studies revealed that D-1exhibits single-molecule magnet (SMM) behavior under zero dc magnetic field, and its magnetic relaxation has a distinct Raman process in addition to the Orbach process, with the Ueff/kvalue of 57.5 K and the Cvalue of 28.27 s–1K–2.14; while D-2displays dual magnetic relaxation behavior at 0 Oe field, with the Ueff/kvalue 114.8 K for the slow relaxation process (SR) and the Cvalue of 10.656 s–1K–5.80for the fast relaxation process (FR), respectively. Theoretical calculations indicated that the conjugated groups (phenyl vs naphthyl) of the Schiff base bridging ligands (H2L1 and H2L2) significantly affect the intramolecular magnetic interactions between the Dy3+ions and ultimately lead to different relaxations. Furthermore, magnetic circular dichroism (MCD) measurements showed that these two pairs of Dy4enantiomers exhibit strong room temperature magneto-optical Faraday effects; notably, increasing the conjugated group on the Schiff base bridging ligand is beneficial to enhancing the magneto-optical Faraday effects.

Published
2023
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27. Circularly polarized luminescence and magneto-optic effects from chiral Dy(III) single molecule magnets.

Author

Huang, Hong, Sun, Rong, Wu, Xiao-Fan, Liu, Youchao, Zhan, Jun-Zheng, Wang, Bing-Wu, and Gao, Song

Subjects
SINGLE molecule magnets, MAGNETIC circular dichroism, SUPERCONDUCTING magnets, LUMINESCENCE, MAGNETIC materials, CIRCULAR polarization
Abstract

A new pair of multifunctional Zn(II)–Dy(III) enantiomers based on the chiral Schiff-base ligands [R,R-ZnLDy(H2O)(NO3)3] (1R2R-ZnDy) and [S,S-ZnLDy(H2O)(NO3)3] (1S2S-ZnDy) (H2L = phenol, 2,2′-[[(1R,2R/1S,2S)-1,2-diphenyl-1,2-ethanediyl]bis[(E)-nitrilomethylidyne]]bis[6-methoxy]) was synthesized and characterized. Magnetic studies indicate that 1R2R-ZnDy behaves as a single-molecule magnet. Enantiomers 1R2R-ZnDy and 1S2S-ZnDy show chiroptical activity and circularly polarized luminescence in the N,N-dimethylformamide (DMF) solution. The chiral Zn(II)–Dy(III) complexes display magnetic circular dichroism signals at room temperature. Accordingly, these complexes will inspire intriguing research on single-molecule magnets with circular polarization of luminescence activity and magneto-optic effects, which will give new clues to design multifunctional molecular magnetic materials. [ABSTRACT FROM AUTHOR]

Published
2023
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28. A phase III randomized, double-blind, placebo-controlled trial of the denosumab biosimilar QL1206 in postmenopausal Chinese women with osteoporosis and high fracture risk

Author

Zhang, Hao, primary, Gu, Jie-mei, additional, Chao, Ai-jun, additional, Cheng, Qun, additional, Teng, Dong-hui, additional, Yu, Jin-ming, additional, Wang, Bing-wu, additional, Huo, Ya-nan, additional, Mao, Li, additional, Zhang, Qiu, additional, Yang, Hong, additional, Yan, Shi-gui, additional, Zhang, Ke-qin, additional, Zhao, Xue-ling, additional, Lin, Hua, additional, Pei, Yu, additional, Yuan, Zhong, additional, Dai, Ru-chun, additional, He, Liang, additional, Chen, Li, additional, Su, Yong-feng, additional, Deng, Zhong-liang, additional, You, Li, additional, Ban, Bo, additional, Zhu, Mei, additional, Cao, You-liang, additional, Zhu, Yi-kun, additional, Li, Zhi-jun, additional, Zhang, Zhi, additional, Yi, Cheng-qing, additional, Lu, Yi-bing, additional, Wang, Guang, additional, Han, Cui-cui, additional, Wang, Zhen-jiang, additional, Li, Xian-xing, additional, and Zhang, Zhen-lin, additional

Published
2022
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33. Bioinspired Design of seco ‐Chlorin Photosensitizers to Overcome Phototoxic Effects in Photodynamic Therapy

Author

Zhu, Mengliang, primary, Zhang, Hang, additional, Ran, Guangliu, additional, Yao, Yuhang, additional, Yang, Zi‐Shu, additional, Ning, Yingying, additional, Yu, Yi, additional, Zhang, Ruijing, additional, Peng, Xin‐Xin, additional, Wu, Jiahui, additional, Jiang, Zhifan, additional, Zhang, Wenkai, additional, Wang, Bing‐Wu, additional, Gao, Song, additional, and Zhang, Jun‐Long, additional

Published
2022
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36. Bioinspired Design of seco‐Chlorin Photosensitizers to Overcome Phototoxic Effects in Photodynamic Therapy

Author

Zhang, Jun-Long, primary, Zhu, Mengliang, additional, Zhang, Hang, additional, Ran, Guangliu, additional, Yao, Yuhang, additional, Yang, Zi-Shu, additional, Ning, Yingying, additional, Yu, Yi, additional, Zhang, Ruijing, additional, Peng, Xin-Xin, additional, Wu, Jiahui, additional, Jiang, Zhifan, additional, Zhang, Wenkai, additional, Wang, Bing-Wu, additional, and Gao, Song, additional

Published
2022
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44. Unprecedented Ferroelectricity and Ferromagnetism in a Cr2+‐Based Two‐Dimensional Hybrid Perovskite.

Author

Ai, Yong, Sun, Rong, Liao, Wei‐Qiang, Song, Xian‐Jiang, Tang, Yuan‐Yuan, Wang, Bing‐Wu, Wang, Zhe‐Ming, Gao, Song, and Xiong, Ren‐Gen

Subjects
FERROELECTRICITY, PHASE transitions, TRANSITION temperature, PEROVSKITE, CURIE temperature, FERROELECTRIC thin films
Abstract

Organic–inorganic hybrid perovskites (OIHPs) have gained tremendous interest for their rich functional properties. However, the coexistence of more than one of ferroelectricity, ferromagnetism and ferroelasticity has been rarely found in OIHPs. Herein, we report a two‐dimensional Cr2+‐based OIHP, [3,3‐difluorocyclobutylammonium]2CrCl4 ([DFCBA]2CrCl4), which shows both ferroelectricity and ferromagnetism. It undergoes a 4/mmmFm type ferroelectric phase transition at a temperature as high as 387 K and shows multiaxial ferroelectricity with a saturate polarization of 2.1 μC cm−2. It acts as a soft ferromagnet with a Curie temperature of 32.6 K. This work throws light on the exploration of OIHPs with the coexistence of ferroelectricity and ferromagnetism for applications in future multifunctional smart devices. [ABSTRACT FROM AUTHOR]

Published
2022
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