Controlling the magnetic properties of dysprosium metallofullerene within metal–organic frameworks

2016 ◽  
Vol 45 (48) ◽  
pp. 19226-19229 ◽  
Author(s):  
Yongjian Li ◽  
Taishan Wang ◽  
Haibing Meng ◽  
Chong Zhao ◽  
Mingzhe Nie ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Quantum Tunneling ◽  
Metal Organic Frameworks ◽  
Single Molecule Magnet ◽  
Metal Organic

The hysteresis and quantum tunneling of magnetism for a metallofullerene DySc2N@C80 single-molecule magnet were modulated through trapping in MOF-177.

An air stable radical-bridged dysprosium single molecule magnet and its neutral counterpart: redox switching of magnetic relaxation dynamics

2017 ◽  
Vol 53 (14) ◽  
pp. 2283-2286 ◽  
Author(s):  
Brian S. Dolinar ◽  
Silvia Gómez-Coca ◽  
Dimitris I. Alexandropoulos ◽  
Kim R. Dunbar
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Quantum Tunneling ◽  
Magnetic Relaxation ◽  
Thermal Relaxation ◽  
Relaxation Dynamics ◽  
Single Molecule Magnet ◽  
Neutral Compound ◽  
Redox Switching ◽  
P Addition

Addition of a radical to the bridging tetrazine ligand of a Dy2 complex dramatically alters the magnetic properties. The radical complex undergoes magnetic relaxation via a thermal relaxation pathway, whereas the neutral compound relaxes via quantum tunneling of the magnetization.

Magnetic coordination clusters and networks: synthesis and topological description

2010 ◽  
Vol 368 (1915) ◽  
pp. 1509-1536 ◽  
Author(s):  
George E. Kostakis ◽  
Ian J. Hewitt ◽  
Ayuk M. Ako ◽  
Valeriu Mereacre ◽  
Annie K. Powell
Keyword(s):  
Magnetic Properties ◽  
Coordination Chemistry ◽  
Single Molecule ◽  
Metal Organic Frameworks ◽  
New Approach ◽  
Topological Description ◽  
Metal Organic ◽  
Paramagnetic Ions

With the discovery of the phenomenon of single-molecule magnetism, coordination chemists have turned their attention to synthesizing cluster aggregates of paramagnetic ions. This has led to a plethora of coordination clusters with various topologies and diverse magnetic properties. In this paper, we present ways of describing and understanding such compounds as well as outlining a new approach, which we have recently developed, to describing cluster topology. Our approach is based upon and pays tribute to the huge contribution made to coordination chemistry through the development of the Schläfli symbols for describing architectures. To illustrate the developments that are taking place in modern coordination chemistry, we start with some basic definitions of relevance to what follows. Then we describe approaches to discovering new magnetically interesting 3d/4f clusters, assigning their topological descriptions. Finally, we show how the concepts behind the construction of metal–organic frameworks can be extended to using clusters as nodes in the frameworks to give super metal–organic frameworks.

Isostructural lanthanide-based metal–organic frameworks: structure, photoluminescence and magnetic properties

2018 ◽  
Vol 47 (3) ◽  
pp. 925-934 ◽  
Author(s):  
Li-Lin Luo ◽  
Xiang-Long Qu ◽  
Zheng Li ◽  
Xia Li ◽  
Hao-Ling Sun
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Metal Organic Frameworks ◽  
Magnetic Behavior ◽  
Slow Relaxation ◽  
Luminescence Properties ◽  
Metal Organic ◽  
The Eu

Highly stable 3D Ln-MOFs were constructed. The Eu-MOF shows good luminescence properties while the Dy-MOF shows a typical single-molecule magnetic behavior with a slow relaxation of magnetization.

A series of lanthanide(iii) metal–organic frameworks derived from a pyridyl-dicarboxylate ligand: single-molecule magnet behaviour and luminescence properties

2020 ◽  
Vol 49 (40) ◽  
pp. 14123-14132
Author(s):  
Chengcheng Zhang ◽  
Xiufang Ma ◽  
Peipei Cen ◽  
Xiaoyong Jin ◽  
Jinhui Yang ◽  
...  
Keyword(s):  
Single Molecule ◽  
Metal Organic Frameworks ◽  
Luminescence Properties ◽  
Zero Field ◽  
Single Molecule Magnet ◽  
Metal Organic ◽  
Dicarboxylate Ligand

The zero-field single-molecule magnet behaviour and luminescence properties of 3D Ln-MOFs with a versatile pyridyl-decorated dicarboxylate.

scholarly journals Reversible Switching of Single-Molecule Magnetic Behaviour by Desorption/Adsorption of Solvent Ligand in a New Dy(III)-Based Metal Organic Framework

2021 ◽  
Vol 9 ◽  
Author(s):  
Xiao-Jiao Song ◽  
Zhao-Bo Hu ◽  
Miao-Miao Li ◽  
Xin Feng ◽  
Ming Kong ◽  
...  
Keyword(s):  
Single Molecule ◽  
Applied Field ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Magnetic Behaviour ◽  
Zero Field ◽  
Single Molecule Magnet ◽  
Slow Magnetic Relaxation ◽  
Metal Organic ◽  
Solvent Molecules

Two metal-organic frameworks (MOFs), [Dy(BDC)(NO3)(DMF)2]n (1, H2BDC = terephthalic acid) and [Dy(BDC)(NO3)]n (1a), were synthesized. The structures of MOFs 1 and 1a are easy to be reversibly transformed into each other by the desorption or adsorption of coordination solvent molecules. Accordingly, their magnetic properties can also be changed reversibly, which realizes our goals of manipulating on/off single-molecule magnet behaviour. MOF 1 behaves as a single-molecule magnet either with or without DC field. Contrarily, no slow magnetic relaxation was observed in 1a both under zero field and applied field.

Reversible structural transformation induced switchable single-molecule magnet behavior in lanthanide metal–organic frameworks

2018 ◽  
Vol 54 (72) ◽  
pp. 10183-10186 ◽  
Author(s):  
Mengmeng Wang ◽  
Xixi Meng ◽  
Fen Song ◽  
Yanfei He ◽  
Wei Shi ◽  
...  
Keyword(s):  
Structural Transformation ◽  
Single Molecule ◽  
Metal Organic Frameworks ◽  
Single Molecule Magnet ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Reversible Structural Transformation

The structural transformation between Ln-MOFs 1 and 2 and the corresponding switchable “on/off” single-molecule magnet behavior have been studied.

Single crystal to single crystal transformation of spin-crossover coordination polymers from 3D frameworks to 2D layers

2021 ◽  
Vol 9 (15) ◽  
pp. 5082-5087
Author(s):  
Yu Gong ◽  
Wang-Kang Han ◽  
Hui-Shu Lu ◽  
Qing-Tao Hu ◽  
Huan Tu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Ligand Exchange ◽  
Spin Crossover ◽  
Metal Organic Frameworks ◽  
Crystal Transformation ◽  
Metal Organic

New Hofmann-type metal–organic frameworks display rare and complete ligand exchange induced single crystal to single crystal transformations from 3D frameworks to 2D layers, accompanied by magnetic properties transition from two-step SCO behavior to hysteretic SCO behavior.

scholarly journals A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand

Inorganics ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 51
Author(s):  
Lin Miao ◽  
Mei-Jiao Liu ◽  
Man-Man Ding ◽  
Yi-Quan Zhang ◽  
Hui-Zhong Kou
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Rhodamine 6G ◽  
Bond Angle ◽  
Magnetic Measurements ◽  
Single Molecule Magnet ◽  
Lanthanide Metals ◽  
Process Studies ◽  
Dual Functions

The complexes of lanthanide metals, especially dysprosium, can generally exhibit excellent magnetic properties. By means of modifying ligands, dual functions or even multi-functions can be achieved. Here, we synthesized an eight-coordinate Dy(III) complex 1, [Dy(HL-o)2(MeOH)2](ClO4)3·4.5MeOH, which is single-molecule magnet (SMM), and the introduction of the rhodamine 6G chromophore in the ring-opened ligand HL-o realizes ligand-centered fluorescence in addition to SMM. Magnetic measurements and ab initio calculations indicate that the magnetic relaxation for complex 1 should be due to the Raman relaxation process. Studies on magneto-structural correlationship of the rhodamine salicylaldehyde hydrazone Dy(III) complexes show that the calculated energy of the first Kramers Doublet (EKD1) is basically related to the Ophenoxy-Dy-Ophenoxy bond angle, i.e., the larger Ophenoxy-Dy-Ophenoxy bond angle corresponds to a larger EKD1.

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