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Peer-reviewedCC BYInorganic chemistry

A Dy3+ Single-Molecule Magnet as a Dual-Mode Luminescent and Magnetic Thermometer.

  • Paula Oreiro-Martínez1,2
  • Cristina González-Barreira1
  • Julio Corredoira-Vázquez1,2
  • Ana M García-Deibe1
  • Jesús Sanmartín-Matalobos1,2
  • Carlos D S Brites3
  • Luis D Carlos3
  • Daniel Aravena4
  • Matilde Fondo1,2
4 affiliations
  1. 1Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela, 15782Santiago de Compostela, Spain.
  2. 2Institute of Materials (iMATUS), Universidade de Santiago de Compostela, 15782Santiago de Compostela, Spain.
  3. 3Phantom-g, CICECO-Aveiro Institute of Materials, Physics Department, University of Aveiro, 3810-193, Aveiro, Portugal.
  4. 4Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo33, Santiago, Chile.
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Abstract

Metal-ion-assisted Schiff-base condensation enabled the isolation of the complex [Dy(LN6prop)(CH3COO)2](BPh4) (1), which undergoes a ligand exchange reaction with triphenylsilanolate to yield [Dy(LN6prop)(CH3COO)(OSiPh3)](BPh4)·0.5CH2Cl2 (2·0.5CH2Cl2). The crystal structure of 2·0.5CH2Cl2 reveals that the Dy3+ ion is coordinated in an N6O3 environment, adopting a distorted capped square antiprism geometry. 2·0.5CH2Cl2 is a single ion magnet, exhibiting magnetic relaxation in the 2-22 K range with an energy barrier of 465 K, consistent with ab initio calculations and luminescent measurements. 2·0.5CH2Cl2 also functions as a luminescent thermometer with maximum sensitivity SrΔ of 1% K-1 at 12 K. In addition, 2·0.5CH2Cl2 also shows magneto-thermometry, based on magnetic relaxation time (τ) and inverse magnetic susceptibility (1/χ). This magneto-thermometer achieves relatively high magneto-thermal sensitivities (Smax) of 9.3 % K-1 (Sr1/χ) at 10 K and 20 % K-1 (Srτ) at 9 K, while both Sr parameters remain well above 1% K-1 across the entire single-molecule magnet (SMM) operating range. Overall, 2·0.5CH2Cl2 constitutes a bifunctional molecular material, integrating SMM behavior with efficient dual-mode luminescent and magnetic thermometry.

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Cite

BibTeXRIS
BibTeX
@article{oreiromartinez2026singlemolecule,
  title = {{A Dy3+ Single-Molecule Magnet as a Dual-Mode Luminescent and Magnetic Thermometer.}},
  author = {Paula Oreiro-Martínez and Cristina González-Barreira and Julio Corredoira-Vázquez and Ana M García-Deibe and Jesús Sanmartín-Matalobos and Carlos D S Brites and Luis D Carlos and Daniel Aravena and Matilde Fondo},
  journal = {Inorganic chemistry},
  year = {2026},
  month = sep,
  doi = {10.1021/acs.inorgchem.6c02533},
  url = {https://europepmc.org/article/MED/42916210},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - A Dy3+ Single-Molecule Magnet as a Dual-Mode Luminescent and Magnetic Thermometer.
AU  - Paula Oreiro-Martínez
AU  - Cristina González-Barreira
AU  - Julio Corredoira-Vázquez
AU  - Ana M García-Deibe
AU  - Jesús Sanmartín-Matalobos
AU  - Carlos D S Brites
AU  - Luis D Carlos
AU  - Daniel Aravena
AU  - Matilde Fondo
PY  - 2026
DA  - 2026/09/01
JO  - Inorganic chemistry
DO  - 10.1021/acs.inorgchem.6c02533
UR  - https://europepmc.org/article/MED/42916210
AB  - Metal-ion-assisted Schiff-base condensation enabled the isolation of the complex [Dy(LN6prop)(CH3COO)2](BPh4) (1), which undergoes a ligand exchange reaction with triphenylsilanolate to yield [Dy(LN6prop)(CH3COO)(OSiPh3)](BPh4)·0.5CH2Cl2 (2·0.5CH2Cl2). The crystal structure of 2·0.5CH2Cl2 reveals that the Dy3+ ion is coordinated in an N6O3 environment, adopting a distorted capped square antiprism geometry. 2·0.5CH2Cl2 is a single ion magnet, exhibiting magnetic relaxation in the 2-22 K range with an energy barrier of 465 K, consistent with ab initio calculations and luminescent measurements. 2·0.5CH2Cl2 also functions as a luminescent thermometer with maximum sensitivity SrΔ of 1% K-1 at 12 K. In addition, 2·0.5CH2Cl2 also shows magneto-thermometry, based on magnetic relaxation time (τ) and inverse magnetic susceptibility (1/χ). This magneto-thermometer achieves relatively high magneto-thermal sensitivities (Smax) of 9.3 % K-1 (Sr1/χ) at 10 K and 20 % K-1 (Srτ) at 9 K, while both Sr parameters remain well above 1% K-1 across the entire single-molecule magnet (SMM) operating range. Overall, 2·0.5CH2Cl2 constitutes a bifunctional molecular material, integrating SMM behavior with efficient dual-mode luminescent and magnetic thermometry.
SN  - 0020-1669
SN  - 1520-510X
ER  -