A SIM-MOF: Three-Dimensional Organisation of Single-Ion Magnets with Anion-Exchange Capabilities

The formation of a metal–organic framework (MOF) with nodes that have single‐molecule magnet (SMM) behaviour has been achieved by using mononuclear lanthanoid analogues, also known as single‐ion magnets (SIMs), which enormously simplifies the challenging issue of making SMM‐MOFs. Here we present a r...

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Vydané v:Chemistry : a European journal Ročník 20; číslo 34; s. 10695 - 10702
Hlavní autori: Baldoví, José J., Coronado, Eugenio, Gaita-Ariño, Alejandro, Gamer, Christoph, Giménez-Marqués, Mónica, Mínguez Espallargas, Guillermo
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Weinheim WILEY-VCH Verlag 18.08.2014
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
Predmet:
Acetal resins
Anion exchange
Anions
Chemistry
Holes
Magnetic fields
magnetic properties
Magnetic relaxation
Magnets
metal-organic frameworks
Metalorganic compounds
polyoxometalates
Polyoxometallates
Robustness
single-molecule studies
Three dimensional
magnetic properties
anions
polyoxometalates
metal-organic frameworks
single-molecule studies
ISSN:0947-6539, 1521-3765, 1521-3765
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Popis
Shrnutí:The formation of a metal–organic framework (MOF) with nodes that have single‐molecule magnet (SMM) behaviour has been achieved by using mononuclear lanthanoid analogues, also known as single‐ion magnets (SIMs), which enormously simplifies the challenging issue of making SMM‐MOFs. Here we present a rational design of a family of MOFs, [Ln(bipyNO)4](TfO)3⋅x solvent (Ln=Tb (1); Dy (2); Ho (3); Er (4); TfO=triflate), in which the lanthanoid centres have an square‐antiprismatic coordination environment suitable for SIM behaviour. Magnetic measurements confirm the existence of slow magnetic relaxation typical of SMMs, which has been rationalised by means of a radial effective charge model. In addition, we have explored the incorporation of bulky polyoxometalates (POMs) into the cavities of the SIM‐MOF by anion exchange, finding that they do not interfere with the slow magnetic relaxation. This demonstrates the robustness of the frameworks and opens the possibility of incorporating non‐innocent anions. SIMs to be in (3D) order: The formation of a single‐ion magnet/metal–organic framework (SIM‐MOF) is presented, which enormously simplifies the challenging issue of making SMM‐MOFs. The incorporation of bulky polyoxometalates (POMs) into the cavities does not interfere with the slow magnetic relaxation, demonstrating the robustness of the frameworks and opening the possibility of incorporating non‐innocent anions.
Bibliografia:European Union
ark:/67375/WNG-9DZMLC0J-X
Generalidad Valenciana
Spanish MINECO - No. MAT2011-22785; No. CTQ2011-26507
FEDER
SIM-MOF=single-ion magnet/metal-organic framework.
Spanish MECD
ArticleID:CHEM201402255
istex:5D438C3422173F83DD76F7DB09B7D35DB93BD505
SIM‐MOF=single‐ion magnet/metal–organic framework.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0947-6539
1521-3765
1521-3765
DOI:10.1002/chem.201402255