The Challenge of Thermal Deposition of Coordination Compounds: Insight into the 
Case of an Fe4 Single Molecule Magnet

Lanzilotto, V.; Malavolti, L.; Ninova, S.; Cimatti, I.; Poggini, L.; Cortigiani, B.; Mannini, M.; Totti, F.; Cornia, A.; Sessoli, R.

doi:10.1021/acs.chemmater.6b02696

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The Challenge of Thermal Deposition of Coordination Compounds: Insight into the Case of an Fe4 Single Molecule Magnet

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Malavolti, L.
Univ Florence, Dept Chem Ugo Schiff, I-50019 Sesto Fiorentino, Italy;
Univ Florence, INSTM Res Unit, I-50019 Sesto Fiorentino, Italy;
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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https://dx.doi.org/10.1021/acs.chemmater.6b02696
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Zitation

Lanzilotto, V., Malavolti, L., Ninova, S., Cimatti, I., Poggini, L., Cortigiani, B., et al. (2016). The Challenge of Thermal Deposition of Coordination Compounds: Insight into the Case of an Fe4 Single Molecule Magnet. Chemistry of Materials, 28(21), 7693-7702. doi:10.1021/acs.chemmater.6b02696.

Zitierlink: https://hdl.handle.net/21.11116/0000-0001-8F4C-A

Zusammenfassung

Realization of well-controlled hybrid interfaces between solid surfaces and functional complex molecules can be hampered by the presence of contaminants originated by the fragmentation of fragile architectures based on the coordinative bond. Here, we present a morphological and spectroscopic analysis of submonolayer films obtained by sublimation of the [Fe-4(L)(2)(dpm)(6)] (Fe-4) single molecule magnet on different substrates. Though intact tetranuclear molecules can be transferred to surfaces, smaller molecular species are often codeposited. By comparison of substrates characterized by different reactivities, such as Au(111), Cu(100), and Cu2N, and employing a protocol of indirect exposure of the substrate, we infer that the observed fragments do not originate from the reaction of Fe-4 molecules with the surface but rather are produced during Fe-4 sublimation, which releases Fe(dpm)(3) as a very volatile compound. Fe(dpm)(3) undergoes substrate-dependent on-surface decomposition to final products that have been identified by combined STM, UPS, XPS, and DFT studies.