A new family of dinuclear lanthanide complexes constructed from an 8-hydroxyquinoline Schiff base and β-diketone: magnetic properties and near-infrared luminescence

2019 ◽  
Vol 48 (4) ◽  
pp. 1392-1403 ◽  
Author(s):  
Dong-Fang Wu ◽  
Zhen Liu ◽  
Peng Ren ◽  
Xiao-He Liu ◽  
Ning Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Magnetocaloric Effect ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Near Infrared ◽  
Relaxation Behavior ◽  
New Family ◽  
Infrared Luminescence ◽  
Slow Magnetic Relaxation

Gd/Dy complexes based on 8-hydroxiquinoline derivatives display a magnetocaloric effect and slow magnetic relaxation behavior.

The near-infrared luminescence and magnetism of dinuclear complexes with different local symmetries constructed from a β-diketonate co-ligand and bis-Schiff base ligand

2020 ◽  
Vol 44 (6) ◽  
pp. 2561-2570 ◽  
Author(s):  
Huan-Huan Chen ◽  
Dong-Fang Wu ◽  
Yao-Yao Duan ◽  
Ling Li ◽  
Yun-Juan Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Magnetic Relaxation ◽  
Near Infrared ◽  
Relaxation Behavior ◽  
Dinuclear Complexes ◽  
Infrared Luminescence ◽  
Slow Magnetic Relaxation ◽  
Local Symmetries

A DyIII-complex based on a β-diketonate co-ligand and bi-Schiff base ligand displays slow magnetic relaxation behavior.

Modulation of the properties of dinuclear lanthanide complexes through utilizing different β-diketonate co-ligands: near-infrared luminescence and magnetization dynamics

2020 ◽  
Vol 49 (9) ◽  
pp. 2850-2861 ◽  
Author(s):  
Yun-Juan Wang ◽  
Dong-Fang Wu ◽  
Jian Gou ◽  
Yao-Yao Duan ◽  
Ling Li ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Near Infrared ◽  
Magnetization Dynamics ◽  
Infrared Luminescence ◽  
Slow Magnetic Relaxation

Four Dy2 complexes based on the ligand H2L display various slow magnetic relaxation behaviors through utilizing different β-diketonate co-ligands.

Magnetocaloric effect and slow magnetic relaxation in two dense (3,12)-connected lanthanide complexes

2014 ◽  
Vol 1 (7) ◽  
pp. 549-552 ◽  
Author(s):  
Song-De Han ◽  
Xiao-Hong Miao ◽  
Sui-Jun Liu ◽  
Xian-He Bu
Keyword(s):  
Magnetocaloric Effect ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Relaxation Behavior ◽  
Slow Magnetic Relaxation

We report two (3,12)-connected complexes with distorted cubic [Ln4O4] (Ln = Gd (1), Dy (2)) units as nodes bridged by in situ generated sulfate. 1 features a large magnetocaloric effect with −ΔSmaxm = 51.29 J kg−1 K−1, and 2 displays slow magnetic relaxation behavior.

Structures, fluorescence properties and magnetic properties of a series of rhombus-shaped LnIII4 clusters: magnetocaloric effect and single-molecule-magnet behavior

2019 ◽  
Vol 43 (33) ◽  
pp. 12941-12949 ◽  
Author(s):  
Wen-Min Wang ◽  
Li Zhang ◽  
Xian-Zhen Li ◽  
Li-Yuan He ◽  
Xin-Xin Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Magnetic Refrigeration ◽  
Fluorescence Properties ◽  
Relaxation Processes ◽  
Magnetic Studies ◽  
Single Molecule Magnet ◽  
Slow Magnetic Relaxation

A family LnIII4 clusters were successfully synthesized and structurally characterized. Magnetic studies show that Gd4 cluster displays magnetic refrigeration, while Dy4 cluster demonstrates two distinct slow magnetic relaxation processes.

scholarly journals Nitronyl Nitroxide Biradical-Based Binuclear Lanthanide Complexes: Structure and Magnetic Properties

2020 ◽  
Vol 6 (4) ◽  
pp. 48
Author(s):  
Lu Xi ◽  
Jing Han ◽  
Xiaohui Huang ◽  
Licun Li
Keyword(s):  
Magnetic Properties ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Magnetic Data ◽  
Antiferromagnetic Coupling ◽  
Zero Field ◽  
Nitronyl Nitroxide ◽  
Ferromagnetic Exchange ◽  
Binuclear Structure ◽  
Slow Magnetic Relaxation

Employing a new nitronyl nitroxide biradical NITPhPzbis(NITPhPzbis = 5-(1-pyrazolyl)-1,3-bis(1’-oxyl-3’-oxido-4’,4’,5’,5’-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene), a series of 2p-4f complexes [Ln2(hfac)6(H2O)(NITPhPzbis)] (LnIII = Gd1, Tb2, Dy3; hfac = hexafluoroacetylacetonate) were successfully synthesized. In complexes 1–3, the designed biradical NITPhPzbis coordinates with two LnIII ions in chelating and bridging modes to form a four-spin binuclear structure. Direct-current magnetic study of Gd analogue indicates that ferromagnetic exchange exists between the Gd ion and the radical while antiferromagnetic coupling dominates between two mono-radicals. Dynamic magnetic data show that the χ” signals of complex 3 exhibit frequency dependence under zero field, demonstrating slow magnetic relaxation behavior in complex 3. And the estimated values of Ueff and τ0 are about 8.4 K and 9.1 × 10−8 s, respectively.

Construction of a family of Ln3 clusters using multidentate Schiff base and β-diketonate ligands: fluorescence properties, magnetocaloric effect and slow magnetic relaxation

2020 ◽  
Vol 44 (22) ◽  
pp. 9230-9237 ◽  
Author(s):  
Wen-Min Wang ◽  
Yu Gao ◽  
Rong-Xin Yue ◽  
Na Qiao ◽  
Dan-Tong Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Magnetocaloric Effect ◽  
Magnetic Relaxation ◽  
Magnetic Refrigeration ◽  
Fluorescence Properties ◽  
Slow Magnetic Relaxation ◽  
Solid State Fluorescence

Seven μ-Oacylhydrazone-bridged Ln3 clusters were synthesized. Cluster 3 displayed magnetic refrigeration properties, whereas cluster 5 showed slow magnetic relaxation. The solid-state fluorescence properties of 2, 4 and 5 were also studied.

scholarly journals Neodymium β-diketonate showing slow magnetic relaxation and acting as a ratiometric thermometer based on near-infrared emission

RSC Advances ◽  
2019 ◽  
Vol 9 (41) ◽  
pp. 23444-23449 ◽  
Author(s):  
Kunal Kumar ◽  
Daisuke Abe ◽  
Keiko Komori-Orisaku ◽  
Olaf Stefańczyk ◽  
Koji Nakabayashi ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Near Infrared ◽  
Infrared Emission ◽  
Thermally Induced ◽  
Slow Magnetic Relaxation ◽  
Near Infrared Emission

In this work, we investigated thermally-induced Nd-based one centred ratiometric thermometer which also exhibit single molecule magnetic properties.

Structures and magnetic properties of several phenoxo-O bridged dinuclear lanthanide complexes: Dy derivatives displaying substituent dependent magnetic relaxation behavior

2016 ◽  
Vol 45 (19) ◽  
pp. 8182-8191 ◽  
Author(s):  
Wen-Min Wang ◽  
Wan-Zhen Qiao ◽  
Hong-Xia Zhang ◽  
Shi-Yu Wang ◽  
Yao-Yao Nie ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Relaxation Behavior

The two Dy2 complexes have similar structures, while they display substituent dependent magnetic relaxation behaviors.

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