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Encapsulation of a CrIII Single‐Ion Magnet within an FeII Spin‐Crossover Supramolecular Host |
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| Authors: | Dr Mohanad Darawsheh Dr Leoní A Barrios Dr Olivier Roubeau Dr Simon J Teat Dr Guillem Aromí |
| Institution: | 1. Departament de Química Inorgánica i Orgánica, Universitat de Barcelona, Barcelona, Spain;2. Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Spain;3. Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC and Universidad de Zaragoza, Zaragoza, Spain;4. Advanced Light Source, Berkeley Laboratory, Berkeley, CA, USA |
| Abstract: | Single functional molecules are regarded as future components of nanoscale spintronic devices. Supramolecular coordination chemistry provides unlimited resources to implement multiple functions to individual molecules. A novel coordination Fe2] helicate exhibiting spin‐crossover is demonstrated to be ideally suited to encapsulate a Cr(ox)3]3? complex anion (ox=oxalate), unveiling for the first‐time single ion slow relaxation of the magnetization for this metal. A possibility of tuning the dynamics of this relaxation as well as the performance of the CrIII center as qubit arises from the observation that metastable high spin FeII centers from the host can be generated by irradiation with green light at low temperature. |
| Keywords: | host– guest chemistry single-ion magnets spin crossover spintronic devices |