scholarly journals Influence of Guest Exchange on the Magnetization Dynamics of Dilanthanide Single-Molecule-Magnet Nodes within a Metal-Organic Framework

2015 ◽  
Vol 127 (34) ◽  
pp. 9999-10003 ◽  
Author(s):  
Xuejing Zhang ◽  
Veacheslav Vieru ◽  
Xiaowen Feng ◽  
Jun-Liang Liu ◽  
Zhenjie Zhang ◽  
...  
Keyword(s):  
Single Molecule ◽  
Metal Organic Framework ◽  
Magnetization Dynamics ◽  
Single Molecule Magnet ◽  
Metal Organic ◽  
Organic Framework

Single-Molecule Magnet Behavior of Individual Polyoxometalate Molecules Incorporated within Biopolymer or Metal-Organic Framework Matrices

2016 ◽  
Vol 22 (19) ◽  
pp. 6564-6574 ◽  
Author(s):  
William Salomon ◽  
Yanhua Lan ◽  
Eric Rivière ◽  
Shu Yang ◽  
Catherine Roch-Marchal ◽  
...  
Keyword(s):  
Single Molecule ◽  
Metal Organic Framework ◽  
Single Molecule Magnet ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Single-Molecule Magnet Behavior of Individual Polyoxometalate Molecules Incorporated within Biopolymer or Metal-Organic Framework Matrices

2016 ◽  
Vol 22 (19) ◽  
pp. 6413-6413
Author(s):  
William Salomon ◽  
Yanhua Lan ◽  
Eric Rivière ◽  
Shu Yang ◽  
Catherine Roch-Marchal ◽  
...  
Keyword(s):  
Single Molecule ◽  
Metal Organic Framework ◽  
Single Molecule Magnet ◽  
Metal Organic ◽  
Organic Framework

Towards solvent tuning of slow magnetic relaxation and ferroelectric properties in a dysprosium metal–organic framework system

2019 ◽  
Vol 234 (1) ◽  
pp. 33-41
Author(s):  
Lina Zhang ◽  
Shuyan Guan ◽  
Yunchang Fan ◽  
Chenxia Du ◽  
Dan Zhao ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Metal Organic Framework ◽  
Ferroelectric Properties ◽  
Relaxation Rates ◽  
Slow Magnetic Relaxation ◽  
Metal Organic ◽  
Solvent Molecules ◽  
Organic Framework

Abstract A new dysprosium metal–organic framework {[Dy2(L)3(H2O)4]·(acetone)2·(H2O)3}n (Dy2-Acetone) with single-molecule magnet and ferroelectric properties was synthesized through a solvent-induced single-crystal-to-single-crystal (SCSC) transformation. Notably, exchange of the coordinated and guest solvent molecules lead to different magnetic relaxation and ferroelectric properties in the dysprosium MOF system, Dy2-DMF and Dy2-Acetone. Study reveals that the tunable magnetic relaxation behaviors are most likely a result of different local coordination sphere and lattice solvent molecules within the pores which influenced and tuned the relaxation rates of the magnetization. Moreover, disparate polar solvent molecules confined in the MOFs may be the key factors for their different ferroelectric properties.

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.

scholarly journals Cover Feature: Magnetic Slow Relaxation in a Metal-Organic Framework Made of Chains of Ferromagnetically Coupled Single-Molecule Magnets (Chem. Eur. J. 27/2018)

2018 ◽  
Vol 24 (27) ◽  
pp. 6864-6864 ◽  
Author(s):  
Gang Huang ◽  
Guglielmo Fernandez-Garcia ◽  
Insa Badiane ◽  
Magatte Camarra ◽  
Stéphane Freslon ◽  
...  
Keyword(s):  
Single Molecule ◽  
Metal Organic Framework ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Magnetic Slow Relaxation in a Metal-Organic Framework Made of Chains of Ferromagnetically Coupled Single-Molecule Magnets

2018 ◽  
Vol 24 (27) ◽  
pp. 6983-6991 ◽  
Author(s):  
Gang Huang ◽  
Guglielmo Fernandez-Garcia ◽  
Insa Badiane ◽  
Magatte Camarra ◽  
Stéphane Freslon ◽  
...  
Keyword(s):  
Single Molecule ◽  
Metal Organic Framework ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Metal Organic ◽  
Organic Framework

Adsorption of Cr(VI) from Aqueous Solution by Ethylenediaminetetraacetic Acid-Chitosan-Modified Metal-Organic Framework

2020 ◽  
Vol 20 (3) ◽  
pp. 1660-1669 ◽  
Author(s):  
Yu-Ying Deng ◽  
Xin-Feng Xiao ◽  
Dan Wang ◽  
Bo Han ◽  
Yu Gao ◽  
...  
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Single Molecule ◽  
Ethylenediaminetetraacetic Acid ◽  
Metal Organic Framework ◽  
Concentration Effects ◽  
Adsorption Time ◽  
Initial Concentration ◽  
Metal Organic ◽  
Organic Framework

Cu-BTC was synthesised by hydrothermal method in this study to adsorb and remove the toxic heavy metal hexavalent chromium Cr(VI) in water. The EDTA-chitosan/Cu-BTC was prepared by the surface modification of Cu-BTC with EDTA-modified chitosan. The initial concentration effects of adsorbed chromium solution, adsorbent dosage, adsorption time, adsorption temperature and pH of chromium solution on adsorption capacity were estimated using the single-factor optimisation experiment. Results show that the adsorption capacity of the modified composite was higher than that of Cu-BTC. Cu-BTC and EDTA-chitosan/Cu-BTC exhibited significant adsorption of Cr(VI) under acidic conditions in water and basically independent of temperature. Their adsorption processes conformed with the pseudo-second-order model. The Langmuir adsorption isotherm model obtained the adsorption isotherm, which indicated that the adsorption process was single molecule adsorption. Isotherm fitting obtained the maximum adsorption amounts of Cr(VI) for Cu-BTC and EDTA-chitosan/Cu-BTC at 27.32 and 46.51 mg·g-1, respectively. Factor and principal component analyses show that the main factors affecting the adsorption of Cr(VI) in the EDTA-chitosan/Cu-BTC composites are pH, initial concentration and adsorption time. Therefore, EDTA-chitosan-modified Cu-BTC was a more feasible metal-organic framework material than Cu-BTC because of better adsorption performance, which can be used for adsorption removal of Cr(VI) in water.

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