Magneto-Optical Readout of a Chiral Single-Molecule Magnet at Telecom Wavelengths

Abstract

In this work, the wavelength range of magneto-chiral dichroism (MChD) based optical readout of magnetic hysteresis is extended to the near-infrared (NIR) telecom communication range where optical fibers have the smallest transmission loss. To achieve this goal, we have prepared and investigated a new air-stable chiral single-molecule magnet (SMM) formulated as (S)- and (R)-[Dy(bbppn)Cl] (bbppn = N,N'-bis(2-hydroxybenzyl)-N,N'-bis(2-pyridylmethyl)-X-1,2-propanediamine, X = S, R). We demonstrate that the magnetic hysteresis of this SMM, despite exhibiting rapid quantum tunneling of magnetization (QTM) at zero field, can be optically detected using unpolarized light through MChD. Complementary to our seminal study limited to the visible spectral range, we demonstrate that the MChD-based readout is also effective for the Dy(III) f-f transitions in the NIR region, confirming the robustness of this method across a broader spectral window. These findings establish MChD as a generalizable optical readout method for molecular magnetic materials, reinforcing its potential for future applications in polarization-free optical data readout technologies and optical communication at telecom wavelengths.

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Cite

BibTeX RIS

BibTeX

@article{aragonalberti2026magnetooptical,
  title = {{Magneto-Optical Readout of a Chiral Single-Molecule Magnet at Telecom Wavelengths}},
  author = {Maxime Aragon-Alberti and Hadrien Flichot and Mathieu Gascoin and Boris Le Guennic and Olivier Cador and Ghénadie Novitchi and Geert L J A Rikken and Cyrille Train and Fabrice Pointillart and Matteo Atzori},
  journal = {Journal of the American Chemical Society},
  year = {2026},
  month = sep,
  doi = {10.1021/jacs.5c17544},
  url = {https://hal.science/hal-05441730v1},
  note = {CC BY 4.0},
}

RIS

TY  - JOUR
TI  - Magneto-Optical Readout of a Chiral Single-Molecule Magnet at Telecom Wavelengths
AU  - Maxime Aragon-Alberti
AU  - Hadrien Flichot
AU  - Mathieu Gascoin
AU  - Boris Le Guennic
AU  - Olivier Cador
AU  - Ghénadie Novitchi
AU  - Geert L J A Rikken
AU  - Cyrille Train
AU  - Fabrice Pointillart
AU  - Matteo Atzori
PY  - 2026
DA  - 2026/09/30
JO  - Journal of the American Chemical Society
DO  - 10.1021/jacs.5c17544
UR  - https://hal.science/hal-05441730v1
AB  - In this work, the wavelength range of magneto-chiral dichroism (MChD) based optical readout of magnetic hysteresis is extended to the near-infrared (NIR) telecom communication range where optical fibers have the smallest transmission loss. To achieve this goal, we have prepared and investigated a new air-stable chiral single-molecule magnet (SMM) formulated as (S)- and (R)-[Dy(bbppn)Cl] (bbppn = N,N'-bis(2-hydroxybenzyl)-N,N'-bis(2-pyridylmethyl)-X-1,2-propanediamine, X = S, R). We demonstrate that the magnetic hysteresis of this SMM, despite exhibiting rapid quantum tunneling of magnetization (QTM) at zero field, can be optically detected using unpolarized light through MChD. Complementary to our seminal study limited to the visible spectral range, we demonstrate that the MChD-based readout is also effective for the Dy(III) f-f transitions in the NIR region, confirming the robustness of this method across a broader spectral window. These findings establish MChD as a generalizable optical readout method for molecular magnetic materials, reinforcing its potential for future applications in polarization-free optical data readout technologies and optical communication at telecom wavelengths.
SN  - 0002-7863
SN  - 1520-5126
ER  -

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