Lanthanide double-decker complexes with phthalocyanines (Pc) are a unique class of single molecule magnets, due to the appearace of the highest energy barriers for magnetization reversal reported to date.1 In these [Ln(Pc)2] complexes, the magnetic properties arise from the anisotropy of the lanthanide cations (typically Tb3+ or Dy3+) in axial D4d symmetry imposed by the (N4)2 eight-coordinated environment. The poor solubility and (redox) stability of these molecules makes it difficult to incorporate them in organized arrays or as building blocks for hybrid materials to further exploit their magnetic features. With this in mind, we have developed double-decker complexes from Pc-analogues able to maintain the D4d symmetry, while adding key functionalities for their processing as monolayers, or for their incorporation into multifunctional hybrid materials. In this communication we will report on the synthesis and characterization of lanthanide double-decker complexes of tetraazaporphyrins, polysulfonated phthalocyanines and their corresponding chiral analogs. We will also present examples of their incorporation into molecule-based conducting-magnetic composites. [1] N. Ishikawa et al. J. Am. Chem. Soc. 125, 8694 (2003). Acknowledgements: We are grateful to the EU (ERC Stg grant CHEMCOMP) for financial support.

Enhanced processing features in the family of lanthanide double-decker single molecule magnets

251st National Meeting (2016)

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