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|Title:||Tetrairon(III)-single-molecule magnet monolayers on gold: insights from ToF-SIMS and isotopic labelling||Authors:||Pasquale Totaro, †
Lorenzo Poggini, ⊥
Annaick Favre, ⊥
Matteo Mannini, †
Philippe Sainctavit, †
Andrea Cornia, ‡
To work as magnetic components in molecular electronics and spintronics, single-molecule magnets (SMMs) must be reliably interfaced with metals. The organization on gold of a Fe4 SMM carrying two acetyl-protected thiol groups has been studied by exploiting the surface sensitivity of time-of-flight secondary ion mass spectrometry (ToF-SIMS), additionally powered by the use of an isotopic labeling strategy. Deposition from millimolar dichloromethane solutions results in a higher surface coverage and better packed monolayers as compared with previous protocols based on more diluted solutions. Fe4 complexes are chemically tethered to the surface via a single Au–S bond while they still contain an intact SAc group.
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