STM spectroscopy of magnetic molecules

被引:47
作者
Petukhov, K. [1 ]
Alam, M. S. [1 ]
Rupp, H. [1 ]
Stroemsdoerfer, S. [1 ]
Mueller, P. [1 ]
Scheurer, A. [2 ]
Saalfrank, R. W. [2 ]
Kortus, J. [3 ]
Postnikov, A. [4 ]
Ruben, M. [5 ]
Thompson, L. K. [6 ]
Lehn, J-M. [7 ]
机构
[1] Univ Erlangen Nurnberg, Dept Phys, D-91058 Erlangen, Germany
[2] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-8520 Erlangen, Germany
[3] TU Bergakad Freiberg, Inst Theoret Phys, Freiberg, Germany
[4] Univ Paul Verlaine, Lab Phys Milieux Denses, Metz, France
[5] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany
[6] Mem Univ Newfoundland, Dept Chem, St John, NF A1B 3X7, Canada
[7] Univ Strasbourg, ISIS, Strasbourg, France
关键词
Scanning tunneling microscopy; Current-imaging tunneling spectroscopy; Scanning tunneling spectroscopy; Single-molecule magnets; Grid-like and star-like supramolecular assemblies; CO-II COMPLEXES; METAL CENTERS; ZN-II; LIGAND; ARCHITECTURES; BEHAVIOR; ARRAYS; GRAPHITE; DEVICES;
D O I
10.1016/j.ccr.2009.01.024
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
We have investigated a series of magnetic supramolecular complexes involving coordinated metal ions. Using the current-imaging tunneling spectroscopy mode of a STM, we mapped isolated single molecules. By comparing with DFT calculations, we confirmed that the weakest bonds, i.e. the supramolecular coordination interactions, dominate the molecular orbitals near the Fermi-level of the molecule. Thus, STM spectroscopy can address directly the metal centers in a rather complex molecular entity. Our method allows a selective mapping of the functional units within the supramolecular architecture, even if these units are embedded into a complex set of organic ligands. We observed this behavior in all of our investigated molecules. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:2387 / 2398
页数:12
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