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Two-dimensional dysprosium(III) coordination polymer: Structure, single-molecule magnetic behavior, proton
Jin-Fen Chen1, Yi-Liang Ge1, Dong-Hui Wu1
1College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China.
Frontiers in Chemistry
|August 25, 2022
Summary
A novel dysprosium coordination polymer exhibits slow magnetic relaxation, proton conductivity, and luminescence. This multifunctional material holds promise for advanced applications in materials science.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Solid-State Chemistry
Background:
- Coordination polymers offer tunable properties for advanced applications.
- Dysprosium (III) complexes are explored for magnetic and luminescent behavior.
- Multifunctional materials integrating magnetic, conductive, and optical properties are highly sought after.
Purpose of the Study:
- To synthesize and characterize a new dysprosium (III) coordination polymer.
- To investigate the magnetic, proton conductive, and luminescent properties of the synthesized material.
- To explore the potential of this material as a multifunctional coordination polymer.
Main Methods:
- Hydrothermal synthesis of the dysprosium coordination polymer using a carboxyl and phenolic hydroxyl-containing ligand.
- Structural characterization of the 3D network formed by Dy(III) ions and the organic ligand.
- Magnetic susceptibility measurements to study magnetic relaxation behavior.
- Proton conductivity measurements under varying temperature and humidity.
- Luminescence spectroscopy to analyze the sensitization of Dy(III) emission.
Main Results:
- A novel dysprosium (III) coordination polymer, [Dy(Hm-dobdc)(H2O)2]·H2O (Dy-CP), was successfully synthesized.
- Dy-CP exhibits field-induced slow relaxation of magnetization with an energy barrier (Ueff/kB) of 35.3 K.
- The material demonstrates proton conductivity (σ = 7.77 × 10⁻⁸ S cm⁻¹ at 353 K and 30% RH) via a vehicular mechanism.
- Luminescence spectra confirm that the H4m-dobdc ligand can sensitize the characteristic luminescence of the Dy(III) ion.
Conclusions:
- The synthesized Dy-CP material simultaneously possesses magnetic, proton conductive, and luminescent properties.
- The observed properties suggest Dy-CP is a promising candidate for multifunctional coordination polymer applications.
- This study highlights the potential of designing coordination polymers with integrated functionalities.
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