Anisotropic Magneto‐Chiral Dichroism in Lanthanide Complexes
Abstract
ABSTRACT In this work, we report the preparation of a chiral Er(III) complex specifically designed to assess the influence of the magnetic anisotropy axes orientation on its magneto‐chiral dichroism (MChD). High resolution MChD measurements performed along the three principal crystallographic axes revealed pronounced anisotropic effects on both MChD signal line shapes and intensities. By combining, for the first time, angle‐resolved torque magnetometry, comprehensive magneto‐optical spectroscopy on oriented single crystals, absorption measurements under magnetic fields up to 30 T and theoretical calculations, we provide clear experimental insight into the anisotropic nature of the MChD in lanthanide complexes. Specifically, we evaluate the extent to which Er moderate anisotropy enables signal persistence across a wide range of crystallographic orientations. These results allow the identification of the key role played by both the orientation and the magnitude of magnetic anisotropy in the MChD response of chiral lanthanide complexes, representing a significant step toward the directional control of magneto‐chiroptical responses in lanthanide‐based molecular materials.
Article Details
Authors (10)
Maxime Aragon‐Alberti
Laboratoire National de Champs Magnétiques Intenses (LNCMI) CNRS Univ Grenoble Alpes INSA Toulouse EMFL, Grenoble France
Leonardo Tacconi
Department of Chemistry Ugo Schiff, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
Consuelo Bigelli
Department of Chemistry “Ugo Schiff” DICUS and INSTM Research Unit University of Florence Sesto Fiorentino Italy
Kevin Paillot
Laboratoire National de Champs Magnétiques Intenses (LNCMI) CNRS Univ Grenoble Alpes INSA Toulouse EMFL, Grenoble France
Ghenadie Novitchi
Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes, B.P. 166, Grenoble Cedex 9 38042, France
Geert L. J. A. Rikken
Laboratoire National de Champs Magnétiques Intenses (LNCMI), CNRS, Univ. Grenoble Alpes, INSA Toulouse, Univ. Paul Sabatier, EMFL
Cyrille Train
Laboratoire National de Champs Magnétiques Intenses (LNCMI), CNRS, Univ. Grenoble Alpes, INSA Toulouse, Univ. Paul Sabatier, EMFL
Matteo Briganti
Department of Chemistry “Ugo Schiff” (DICUS) and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, Sesto Fiorentino 50019, Italy
Mauro Perfetti
Department of Chemistry Ugo Schiff, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
Matteo Atzori
Laboratoire National de Champs Magnétiques Intenses (LNCMI), CNRS, Univ. Grenoble Alpes, INSA Toulouse, Univ. Paul Sabatier, EMFL