Circularly polarized luminescence in the one-dimensional assembly of binaphtyl-based Yb(<scp>iii</scp>) single-molecule magnets
Carlo Andrea Mattei, Vincent Montigaud, Bertrand Lefeuvre, Vincent Dorcet, Gilles Argouarch, Olivier Cador, Boris Le Guennic, Olivier Maury, Claudia Lalli, Y. Guyot, Stéphan Guy, Cyprien Gindre, Amina Bensalah‐Ledoux, François Riobé, Bruno Baguenard, Fabrice Pointillart
Abstract
Lanthanide ions have attracted great interest owing to their optical and magnetic properties. Single-molecule magnet (SMM) behavior has been a fascinating science for thirty years. Moreover, chiral lanthanide complexes allow the observation of remarkable circularly polarized luminescence (CPL). However, the combination of both SMM and CPL behaviors in a single molecular system is very rare and deserves attention in the design of multifunctional materials. Four chiral one-dimensional coordination compounds involving 1,1'-Bi-2-naphtol (BINOL)-derived bisphosphate ligands and the Yb(iii) centre were synthesized and characterized by powder and single-crystal X-ray diffraction. All the Yb(iii)-based polymers displayed field-induced SMM behavior with magnetic relaxation occurring by applying Raman processes and near infrared CPL in the solid state.