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  4. Tuning Magnetic and Photophysical Properties of Luminomagnetic Metal-Organic Framework Composites in an Inverse Core-Satellite Structure
 
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2023
Journal Article
Title

Tuning Magnetic and Photophysical Properties of Luminomagnetic Metal-Organic Framework Composites in an Inverse Core-Satellite Structure

Abstract
Luminomagnetic composites have been synthesized that allow for an individual tuning of luminescence intensity, chromaticity and magnetization by combination of superparamagnetic, citrate-stabilized iron oxide nanoparticles with the luminescent MOFs 3∞[Ln2(BDC)3(H2O)4] (Ln=Eu, Tb; BDC2-=terephthalate). The components are arranged to a concept of inverse structuring compared to previous luminomagnetic composites with MOF@magnetic particle (shell@core) composition so that the luminescent MOF now acts as core and is covered by magnetic nanoparticles forming the satellite shell. Thereby, the magnetic and photophysical properties are individually tuneable between high emission intensity (1.2 ⋅ 106 cps mg-1) plus low saturation magnetization (6 emu g-1) and the direct opposite (0.09 ⋅ 106 cps mg-1; 42 emu g-1) by adjusting the particle coverage of the MOF. This is not achievable with a core-shell structure having a magnetic core and a dense MOF shell. The composition of the composites and the influence of different synthesis conditions on their properties were investigated by SEM/EDX, PXRD, magnetization measurements and photoluminescence spectroscopy.
Author(s)
Seuffert, Marcel T.
Granath, Tim
Kasper, Thomas
Maile, Ruben
Pujales‐Paradela, Rosa
Prieschl, Johannes  
Fraunhofer-Institut für Silicatforschung ISC  
Wintzheimer, Susanne  
Fraunhofer-Institut für Silicatforschung ISC  
Mandel, Karl-Sebastian  
Fraunhofer-Institut für Silicatforschung ISC  
Müller‐Buschbaum, Klaus
Journal
ChemPlusChem  
Open Access
DOI
10.1002/cplu.202200395
Additional full text version
Landing Page
Language
English
Fraunhofer-Institut für Silicatforschung ISC  
Keyword(s)
  • composites

  • core-shell nanostructures

  • luminescence

  • magnetism

  • metal-organic frameworks

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