Tetrairon(III) Single-Molecule Magnet Monolayers on Gold: Insights from ToF-SIMS and Isotopic Labeling

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• 作者：Pasquale Totaro ; Lorenzo Poggini ; Annaick Favre ; Matteo Mannini ; Philippe Sainctavit ; Andrea Cornia ; Agnese Magnani ; Roberta Sessoli
• 刊名：Langmuir
• 出版年：2014
• 出版时间：July 29, 2014
• 年：2014
• 卷：30
• 期：29
• 页码：8645-8649
• 全文大小：292K
• ISSN：1520-5827

文摘

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鈥揝 bond while they still contain an intact SAc group.