Iron-based trinuclear metal-organic nanostructures on a surface with local charge accumulation

0493409 - FZÚ 2019 RIV GB eng J - Journal Article
Krull, C. - Castelli, M. - Hapala, Prokop - Kumar, D. - Tadich, A. - Capsoni, M. - Edmonds, M. T. - Hellerstedt, J. - Burke, S.A. - Jelínek, Pavel - Schiffrin, A.
Iron-based trinuclear metal-organic nanostructures on a surface with local charge accumulation.
Nature Communications. Roč. 9, Aug (2018), s. 1-7, č. článku 3211. E-ISSN 2041-1723
R&D Projects: GA MŠMT LM2015087
Grant - others:AV ČR(CZ) AP1601; AV ČR(CZ) MSM100101705
Program: Akademická prémie - Praemium Academiae; Program na podporu mezinárodní spolupráce začínajících výzkumných pracovníků
Institutional support: RVO:68378271
Keywords : organometallic compounds * DFT * AFM * on surface synthesis
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 11.878, year: 2018

Here, we synthesise—via supramolecular chemistry on a noble metal surface—onedimensional metal-organic nanostructures composed of terpyridine (tpy)-based molecules coordinated with well-defined polynuclear iron clusters. Combining low-temperature scanning probe microscopy and density functional theory, we demonstrate that the coordination motif consists of coplanar tpyʼs linked via a quasi-linear tri-iron node in a mixed (positive-) valence metal–metal bond configuration. This unusual linkage is stabilised by local accumulation of electrons between cations, ligand and surface. The latter, enabled by bottom-up on-surface synthesis, yields an electronic structure that hints at a chemically active polynuclear metal centre, paving the way for nanomaterials with novel catalytic/magnetic functionalities.
Permanent Link: http://hdl.handle.net/11104/0286778