Origin of Long-Range Ferromagnetic Ordering in Metal–Organic Frameworks with Antiferromagnetic Dimeric-Cu(II) Building Units

2012 ◽  
Vol 134 (41) ◽  
pp. 17286-17290 ◽  
Author(s):  
Lei Shen ◽  
Shuo-Wang Yang ◽  
Shengchang Xiang ◽  
Tao Liu ◽  
Bangchuan Zhao ◽  
...  
Keyword(s):  
Long Range ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Ferromagnetic Ordering

Proton Conduction and Long-Range Ferrimagnetic Ordering in Two Isostructural Copper(II) Mesoxalate Metal–Organic Frameworks

2015 ◽  
Vol 54 (4) ◽  
pp. 1597-1605 ◽  
Author(s):  
Beatriz Gil-Hernández ◽  
Stanislav Savvin ◽  
Gamall Makhloufi ◽  
Pedro Núñez ◽  
Christoph Janiak ◽  
...  
Keyword(s):  
Long Range ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Metal Organic ◽  
Ferrimagnetic Ordering

scholarly journals Fast and long-range triplet exciton diffusion in metal–organic frameworks for photon upconversion at ultralow excitation power

2015 ◽  
Vol 14 (9) ◽  
pp. 924-930 ◽  
Author(s):  
Prasenjit Mahato ◽  
Angelo Monguzzi ◽  
Nobuhiro Yanai ◽  
Teppei Yamada ◽  
Nobuo Kimizuka
Keyword(s):  
Long Range ◽  
Metal Organic Frameworks ◽  
Excitation Power ◽  
Triplet Exciton ◽  
Exciton Diffusion ◽  
Metal Organic

An Ideal Spin Filter: Long-Range, High-Spin Selectivity in Chiral Helicoidal 3-Dimensional Metal Organic Frameworks

Nano Letters ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 8476-8482
Author(s):  
Uxua Huizi-Rayo ◽  
Junkal Gutierrez ◽  
Jose Manuel Seco ◽  
Vladimiro Mujica ◽  
Ismael Diez-Perez ◽  
...  
Keyword(s):  
Long Range ◽  
High Spin ◽  
Metal Organic Frameworks ◽  
Spin Filter ◽  
3 Dimensional ◽  
Metal Organic

scholarly journals Ligand design for long-range magnetic order in metal–organic frameworks

2014 ◽  
Vol 50 (90) ◽  
pp. 13990-13993 ◽  
Author(s):  
Davide Tiana ◽  
Christopher H. Hendon ◽  
Aron Walsh
Keyword(s):  
Transition Metal ◽  
Long Range ◽  
Magnetic Order ◽  
Metal Organic Frameworks ◽  
Ligand Design ◽  
Range Magnetic Order ◽  
Metal Organic ◽  
Long Range Magnetic Order

We report a class of ligands that are candidates to construct metal–organic frameworks with long-range magnetic order between transition metal centres.

scholarly journals Understanding disorder and linker deficiency in porphyrinic zirconium-based metal–organic frameworks by resolving the Zr8O6 cluster conundrum in PCN-221

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Charlotte Koschnick ◽  
Robert Stäglich ◽  
Tanja Scholz ◽  
Maxwell W. Terban ◽  
Alberto von Mankowski ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Solar Energy ◽  
Energy Conversion ◽  
Long Range ◽  
Functional Properties ◽  
Network Topology ◽  
Metal Organic Frameworks ◽  
Structural Variables ◽  
Metal Organic ◽  
New Perspective

AbstractPorphyrin-based metal–organic frameworks (MOFs), exemplified by MOF-525, PCN-221, and PCN-224, are promising systems for catalysis, optoelectronics, and solar energy conversion. However, subtle differences between synthetic protocols for these three MOFs give rise to vast discrepancies in purported product outcomes and description of framework topologies. Here, based on a comprehensive synthetic and structural analysis spanning local and long-range length scales, we show that PCN-221 consists of Zr6O4(OH)4 clusters in four distinct orientations within the unit cell, rather than Zr8O6 clusters as originally published, and linker vacancies at levels of around 50%, which may form in a locally correlated manner. We propose disordered PCN-224 (dPCN-224) as a unified model to understand PCN-221, MOF-525, and PCN-224 by varying the degree of orientational cluster disorder, linker conformation and vacancies, and cluster–linker binding. Our work thus introduces a new perspective on network topology and disorder in Zr-MOFs and pinpoints the structural variables that direct their functional properties.

scholarly journals Emergent magnetic order and correlated disorder in formate metal-organic frameworks

2019 ◽  
Vol 377 (2149) ◽  
pp. 20190007 ◽  
Author(s):  
R. J. C. Dixey ◽  
F. Orlandi ◽  
P. Manuel ◽  
P. Mukherjee ◽  
S. E. Dutton ◽  
...  
Keyword(s):  
Long Range ◽  
Diffuse Scattering ◽  
Magnetic Order ◽  
Metal Organic Frameworks ◽  
Range Order ◽  
Magnetic Interactions ◽  
Long Range Order ◽  
Structure Of Metal ◽  
Magnetocaloric Properties ◽  
Metal Organic

Magnetic materials with strong local interactions but lacking long-range order have long been a curiosity of physicists. Probing their magnetic interactions is crucial for understanding the unique properties they can exhibit. Metal-organic frameworks have recently gathered more attention as they can produce more exotic structures, allowing for controlled design of magnetic properties not found in conventional metal-oxide materials. Historically, magnetic diffuse scattering in such materials has been overlooked but has attracted greater attention recently, with advances in techniques. In this study, we investigate the magnetic structure of metal-organic formate frameworks, using heat capacity, magnetic susceptibility and neutron diffraction. In Tb(DCO 2 ) 3 , we observe emergent magnetic order at temperatures below 1.2 K, consisting of two k -vectors. Ho(DCO 2 ) 3 shows diffuse scattering above 1.6 K, consistent with ferromagnetic chains packed in a frustrated antiferromagnetic triangular lattice, also observed in Tb(DCO 2 ) 3 above 1.2 K. The other lanthanides show no short- or long-range order down to 1.6 K. The results suggest an Ising-like one-dimensional magnetic order associated with frustration is responsible for the magnetocaloric properties, of some members in this family, improving at higher temperatures. This article is part of the theme issue ‘Mineralomimesis: natural and synthetic frameworks in science and technology’.

scholarly journals Role of Spin–Orbit Coupling in Long Range Energy Transfer in Metal–Organic Frameworks

2020 ◽  
Vol 142 (48) ◽  
pp. 20434-20443
Author(s):  
Arnab Chakraborty ◽  
Stefan Ilic ◽  
Meng Cai ◽  
Bradley J. Gibbons ◽  
Xiaozhou Yang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Long Range ◽  
Metal Organic Frameworks ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Metal Organic

scholarly journals Disorder and Linker Deficiency in Porphyrinic Zr-MOFs: Resolving the Zr8O6 Cluster Conundrum in PCN-221

2020 ◽  
Author(s):  
Charlotte Koschnick ◽  
Robert Stäglich ◽  
Tanja Scholz ◽  
Maxwell Terban ◽  
Alberto von Mankowski ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Solar Energy ◽  
Energy Conversion ◽  
Long Range ◽  
Functional Properties ◽  
Network Topology ◽  
Metal Organic Frameworks ◽  
Structural Variables ◽  
Metal Organic ◽  
New Perspective

Porphyrin-based metal-organic frameworks (MOFs), exemplified by the prototypical representatives MOF-525, PCN-221, and PCN-224 are among the most promising MOF systems for catalysis, optoelectronics, and solar energy conversion. However, subtle differences between synthetic protocols for these three MOFs give rise to vast discrepancies in purported product outcomes and description of framework topologies. Here, we reveal the type and disorder of the Zr-clusters based on a comprehensive synthetic and structural analysis spanning local and long-range length scales. Our analysis on PCN-221 reveals Zr6O4(OH)4 clusters in four distinct orientations within the unit cell, rather than Zr8O6 clusters as originally published, accompanied by random linker vacancies around 50%. We propose disordered PCN-224 (dPCN-224) as a unified model to understand PCN-221, MOF-525, and PCN-224 by varying the degree of orientational cluster disorder, linker conformation and vacancies, and cluster—linker binding. Our work thus introduces a new perspective on network topology and disorder in Zr-MOFs and pinpoints the structural variables that direct their functional properties.

scholarly journals Disorder and Linker Deficiency in Porphyrinic Zr-MOFs: Resolving the Zr8O6 Cluster Conundrum in PCN-221

2020 ◽  
Author(s):  
Charlotte Koschnick ◽  
Robert Stäglich ◽  
Tanja Scholz ◽  
Maxwell Terban ◽  
Alberto von Mankowski ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Solar Energy ◽  
Energy Conversion ◽  
Long Range ◽  
Functional Properties ◽  
Network Topology ◽  
Metal Organic Frameworks ◽  
Structural Variables ◽  
Metal Organic ◽  
New Perspective

Porphyrin-based metal-organic frameworks (MOFs), exemplified by the prototypical representatives MOF-525, PCN-221, and PCN-224 are among the most promising MOF systems for catalysis, optoelectronics, and solar energy conversion. However, subtle differences between synthetic protocols for these three MOFs give rise to vast discrepancies in purported product outcomes and description of framework topologies. Here, we reveal the type and disorder of the Zr-clusters based on a comprehensive synthetic and structural analysis spanning local and long-range length scales. Our analysis on PCN-221 reveals Zr6O4(OH)4 clusters in four distinct orientations within the unit cell, rather than Zr8O6 clusters as originally published, accompanied by random linker vacancies around 50%. We propose disordered PCN-224 (dPCN-224) as a unified model to understand PCN-221, MOF-525, and PCN-224 by varying the degree of orientational cluster disorder, linker conformation and vacancies, and cluster—linker binding. Our work thus introduces a new perspective on network topology and disorder in Zr-MOFs and pinpoints the structural variables that direct their functional properties.

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