Leveraging Surface Siloxide Electronics to Enhance the Relaxation Properties of a Single-Molecule Magnet
- 5 April 2021
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 143 (14), 5438-5444
- https://doi.org/10.1021/jacs.1c00706
Abstract
Single-molecule magnets (SMMs) hold promise for unmatched information storage density as well as for applications in quantum computing and spintronics. To date, the most successful SMMs have been organometallic lanthanide complexes. However, their surface immobilization, one of the requirements for device fabrication and commercial application, remains challenging due to the sensitivity of the magnetic properties to small changes in the electronic structure of the parent SMM. Thus, finding controlled approaches to SMM surface deposition is a timely challenge. In this contribution we apply the concept of isolobality to identify siloxides present at the surface of partially dehydroxylated silica as a suitable replacement for archetypal ligand architectures in organometallic SMMs. We demonstrate theoretically and experimentally that isolated siloxide anchoring sites not only enable successful immobilization but also lead to a 2 orders of magnitude increase in magnetization relaxation times.Funding Information
- Eidgen?ssische Technische Hochschule Z?rich (FEL-23 19-1)
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (CRSK-2_190322)
This publication has 49 references indexed in Scilit:
- Series of Lanthanide Organometallic Single-Ion MagnetsInorganic Chemistry, 2012
- Surface Supramolecular Organization of a Terbium(III) Double-Decker Complex on Graphite and its Single Molecule Magnet BehaviorJournal of the American Chemical Society, 2011
- Chemical strategies and characterization tools for the organization of single molecule magnets on surfacesChemical Society Reviews, 2011
- Magnetic anisotropy in the excited states of low symmetry lanthanide complexesPhysical Chemistry Chemical Physics, 2011
- Quantum tunnelling of the magnetization in a monolayer of oriented single-molecule magnetsNature, 2010
- Anchoring of Rare-Earth-Based Single-Molecule Magnets on Single-Walled Carbon NanotubesJournal of the American Chemical Society, 2009
- Magnetic Bistability of Individual Single‐Molecule Magnets Grafted on Single‐Wall Carbon NanotubesAngewandte Chemie, 2009
- Magnetic memory of a single-molecule quantum magnet wired to a gold surfaceNature Materials, 2009
- Isolated Single‐Molecule Magnets on the Surface of a Polymeric Thin FilmAdvanced Materials, 2003
- Magnetic bistability in a metal-ion clusterNature, 1993